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Mercedes-Benz S-Class


Audi A6

Summary

Mercedes-Benz S-Class

It's only in the running for the title of world's best luxury car. No biggie here, then.

Like Rolex and Concorde, S-Class has become a byword for ultimate, and deserved or not, the Mercedes-Benz defines its segment despite the best efforts of the BMW 7 Series, Audi A8, Lexus LS and (sadly now-defunct) Jaguar XJ, as well as pointing the way forward with new technologies that eventually trickle down to more proletarian models.

Replacing the half-million selling W222 unveiled in 2013, the W223 is the latest in a long line since the first W187 Ponton debuted in 1951, and includes the famous ‘Finnies' and Stroke-8 models that followed immediately afterwards, but it is the 1972 W116 that really set the template.

Now, seven generations in, the 2021 S-Class is all-new again, with progressive safety and interior features that should help keep it Australia's bestselling full-sized upper-luxury sedan.

Safety rating
Engine Type3.0L turbo
Fuel TypePremium Unleaded Petrol
Fuel Efficiency8.4L/100km
Seating5 seats

Audi A6

Despite a determined bid for dominance by a growing stream of Q-badged SUVs, with zero-emission Es on the near horizon, Audi’s A-team of mainstream sedans, wagons, coupes, and cabriolets remains vitally important to the company’s product portfolio and bottom line.

But in recent years the Bavarian maker’s mid-size A6 has been hiding in the shadows, unable to lay a glove on its natural enemies, the BMW 5 Series and Merc’s E-Class, in terms of new car sales in Australia.

So, this sizeable piece of fresh metal is designed to push Audi up the leader board. It’s the all-new, fifth generation A6.

Safety rating
Engine Type3.0L turbo
Fuel TypePremium Unleaded Petrol
Fuel Efficiency7.2L/100km
Seating5 seats

Verdict

Mercedes-Benz S-Class8.5/10

Mercedes-Benz set out to restore the S-Class' place amongst the greatest sedans in the world.

In the heavily-optioned, near-$250K-plus S450 as well as the extended S450L at $300K as tested (the sweet spot of the range for now), we reckon the Germans have succeeded, pushing safety, comfort and technology boundaries, in a package that is true to the heritage of the series.

Tax-fuelled sky-high prices will certainly keep the S-Class niche in Australia, but the car is more than good enough to dominate its tiny corner of the upper-large luxury car sphere.

The best new car in the world? We reckon it's highly likely. Mission accomplished, Mercedes.


Audi A68.1/10

The new Audi A6 is a composed, rapid, top-shelf luxury sedan. It’s comprehensively equipped, with safety tech a stand-out, and priced to chip away at BMW and Merc’s segment dominance.

But owners in this part of the market tend to be rusted on loyal to their preferred brand, and it will be interesting to see of this impressive newcomer can shake a few of them loose.

Pick of the bunch? Save 10 or $15K or dial down the repayments and go for the entry-level A6 45 TFSI, with all the safety tech on-board, plenty of performance, and most of the luxury features included in the more premium models.

Design

Mercedes-Benz S-Class7/10

Most Mercedes models have followed the Russian Doll-style cookie-cutter styling theme, and the heavy family look continues with the W223.

Still, the flush door handles do add a touch of Tesla-esque modernity, while the elegant silhouette and clean lines are in keeping with the luxury aspirations. Larger in every dimension compared to the old W222, the S450 is some 71mm-longer in wheelbase (3106mm) than before while the LWB's has stretched out by 51mm (3216mm), benefiting proportions as well as interior packaging.

AMG-branded wheels look sporty but – in the S450 at least – they're perhaps a tad too gangster. A set of flush alloys would give it a more-modern and techier appearance, in our opinion.

Overall, however, the S-Class ‘7' possesses the prerequisite richness of design. It isn't as bold and mould-breaking as models like the W116 were back in their day, but the styling is still a success.

By the way, the latest S-Class is the first Mercedes to employ the MRA2 longitudinal platform, which is rich in lightweight steels (50 per cent aluminium), is correspondingly stronger than before but also 60kg lighter.

With a drag co-efficiency rating as low as 0.22Cd on some overseas grades, the W223 is one of the most aerodynamic production vehicles in history.


Audi A68/10

Revealed in Germany in early 2018, the new-gen A6 brings fresh engines, leading edge safety, upgraded media tech, and an evolution of the brand’s distinctive design language.

Always a subjective call, but to my eyes the A6’s exterior, while crisp and contemporary, is evolutionary rather than a game-changing step ahead.

The signature single frame grille is even bigger than before, to the point where it feels like Audi has entered an arms race with the current oversize grille superpower, BMW.

A strongly curved roofline accentuates the car’s steeply raked C-pillars, giving it a close to fastback style. Broad, sweeping surfaces are combined with harder defining edges and creases, while short overhangs accentuate the carefully sculpted, tightly wrapped look.

The A6 45 TFSI rides on 19-inch ‘5-twin-spoke’ design alloys which fill the wheelarches nicely, while the 45 and 55 S line run on similar design 20s.

The S line exterior package incorporates specific front and rear bumpers with honeycomb inserts, side air inlet grilles in ‘matt titanium black’ with inserts in ‘platinum grey’, rear diffuser in the same black, this time with chrome trim, side sill trims, and illuminated aluminium door sill trims with S logo at the front

But the short story is, it looks like a big A4, or a small A8. For some, a very good thing, for others the ‘they all look the same’ syndrome may be a question mark.

The interior is a model of Teutonic restraint, the sleek dash and instrument cluster layout showcasing three digital screens covering instruments, media and other functions as well as heating and ventilation.

Long, horizontal vents are an Audi design favourite, the seats look and feel superb and the entire cabin reeks of quality and attention to detail.

Practicality

Mercedes-Benz S-Class10/10

For the beginning of our day with the S-Class, we were chauffeured from home to a mansion in Kew, a blue-chip Melbourne suburb. Our heavily-optioned S450L featured most of the aforementioned extras – including the Business Class Package and Rear Entertainment Package – and the experience was predictably, sumptuously memorable.

Reclining individual rear seats with easy-reach tablets, armrests offering access to all multimedia and available climatised and massaging cushions and backrests... we're no longer in our normal ride, Toto.

Yet, all these trinkets and gizmos are mere add-ons, that can turn a stretched Caprice into a flash hen's night carriage if enough money and glitz is thrown at it.

No, the new S-Class must impress in an altogether less tangible and more philosophical manner, involving all the senses, and not just what we see, hear and touch. It must appeal beyond the superficial. Otherwise, it is not a large Mercedes-Benz luxury sedan in the classic manner.

This is a Herculean task for the Stuttgart designers and engineers. By and large, though, the Three-Pointed Star has succeeded in achieving something special.

In its perception of peerless quality and engineering, the W223 is striving to move forward and look back simultaneously to the glory days of the seminal W126 (1980-1991). This is through meshing traditional virtues like solidity and quality materials while dazzling its passengers with technology that is still friendly enough to want to enhance your experience.

You can sink into the soft lounge seats, watch the world pass by silently outside and never be aware of the road underneath or the engine ahead. Double glazing, exquisite and aromatic fabrics and materials and lush tactile surfaces work their magic inside the car, while an airtight and aero body, solid platform, air suspension and a muted yet muscular powertrain all do their thing underneath. The atmosphere is special and rarefied. That's what an S-Class needs to be and that's what is happening in our $299,000 (as tested) S450L.

The same more-or-less applies up front, as the same trim, leather, wood and technology surrounds the driver and passenger. The spectre of the car that is surely The Car of the Last Decade – Tesla's Model S – is evident in the portrait touchscreen and sparse, almost wallflower dashboard design and layout. No big imposing architectures here.

Yet, while the American upstart actually takes stuff away, the S-Class packs the cabin with subtle features that – like when the planes stopped flying last year and the birdsong subsequently returned – only become obvious once the cabin's design simplicity clears all the white noise for you to be in a better frame of mind to enjoy them.   

Take the haptic interface, for example, as it is perhaps the best we've experienced; the sense of well-being garnered from the cumulative effects of profound seat comfort (the massaging function was never switched off), cocooning micro climate environmental control, orchestral levels of audio entertainment and the theatre of light and vision performed by the two available screens; it is an automotive experience like no other. And the eye-tracking 3D-effect navigation set within the electronic instrumentation. No need for cinematic glasses to get the effect. The driving position itself, by the way, is also first class.

Room to stretch and grow for sure, and in every direction. But room for improvement? You betcha.

Your tester had a headache after a little while staring at that woozy 3D map. The central vents – four at the front, two in the rear – look and feel cheap, leaving us mentally redesigning them; they are frightfully out of place here; the carryover column-stalk auto lever should have been binned in 2005. And, even though the digital instruments have a number of options, none are elegant enough for the S-Class. That's an especially subjective criticism, clearly, but one that – in the context of classic Mercedes luxury sedan contenders – is justified given how timeless the Bruno Sacco era of Daimler design was. Look him up, kids.

Still, after a couple of hours behind the wheel, with our senses reset to calm, it is obvious that the S-Class cabin is a unique and wonderful place – as it should be at a cool quarter-of-a-million dollars.

Job done.

PS At 550 litres (20L more than before), the boot is massive and luxurious enough to sleep in.


Audi A68/10

Large rather than huge, the A6’s key dimensions are within mm of its key segment competitors like the 5 Series and E-Class, as well as the Jag XF and Lexus GS.

Room for the driver and front passenger is generous, with ample storage provided including dual (covered) cupholders in the centre console (also incorporating a 12-volt outlet and key holder slot), a decent glove box, and door bins allowing easy bottle storage.

The lidded storage box/armrest between the front seats is relatively shallow but includes a wireless Qi (chee) charging mat (for compatible devices), plus SIM and SD ports, as well as a pair of (Type-A) USB sockets.

The wheelbase has stretched 12mm in this new model, but Audi says it has eked out an extra 21mm of interior length, with 17 of those added to the rear section. And I’m able to sit behind the driver’s seat set for my 183cm position with heaps of head and legroom on offer. Three adults across the rear is definitely do-able for short to medium length trips.

In the rear, a fold-down centre armrest features a lidded storage tray and twin pop-out cupholders (the latter on S line models only). There are netted pockets here and the door bins are big enough for large drink bottles. There’s also climate control ventilation, USB ports, 12-volt power… the lot!

Boot capacity is around the average for the class at 530 litres, and the A6 swallows our three-piece hard suitcase set with masses of room to spare, as it does the jumbo size CarsGuide pram. In fact, it was able to take the largest case as well as the pram at the same time. Drop the 40/20/40 split-folding rear seat to liberate even more volume.

There are pop-up tie-down anchors at each corner of the boot floor, a netted storage cavity behind the passenger side wheel tub, a 12-volt outlet on the driver’s side, a handy fold down shopping bag hook, an elasticised net is included on the S lines, and a space-saver spare sits under the boot floor.

Towing capacity is the same across the range – 2.0 tonnes for a braked trailer, and 750kg unbraked. The spare is a space saver on all models, too.

Price and features

Mercedes-Benz S-Class8/10

Right now, only two S-Class models are available – the S450 from $240,700 plus on-road costs and the 110mm extended-wheelbase S450L (LWB) for another $24,900 on top. Most buyers overwhelmingly opt for the latter.

Despite what the numbers may suggest, both are powered by a 3.0-litre in-line six-cylinder turbo petrol engine, delivering 270kW of power and 500Nm of torque to all four wheels via a nine-speed torque-converter automatic. Greater choices are coming later, including an all-electric version known as the EQS.

Almost every conceivable safety item is standard on the S-Class, including world-first rear-seat airbags located behind the front seats in the LWB model, taking the surround-airbag count to 10.

You'll also find route-based Speed Adaptation (adhering to the posted speed limits), Evasive Steering Assist (a sophisticated form of crash mitigation), adaptive cruise control with active stop/go, Active Lane Change Assist that automatically moves the car into the lane you indicate to), Mercedes' PreSafe crash-preparation tech that primes all the safety systems for impact, electronic stability program that encapsulates all the active driver-assist tech, Active Emergency Stop Assist, Autonomous Emergency Braking front and rear (including for cyclists and pedestrians), Traffic Sign Assist, Parking Package with Active Parking Assist and 360-degree camera and tyre pressure monitors.

On the equipment front there is the latest iteration of Mercedes' MBUX multimedia system with (another) world-first 3D display, complementing an OLED central display, powered closing doors, leather upholstery, air suspension, leather upholstery, velour floor mats, a multi-beam LED headlight system with adaptive high beams, heated and folding exterior mirrors, heat and noise-insulating acoustic glass for front side windows, dark privacy glass for rear windows, sunroof, roller sunblinds for rear windows, metallic paint and 20-inch AMG alloy wheels on runflat tyres.

Want cutting-edge multimedia? There's MBUX II's augmented reality for navigation and fingerprint scanner, as well as a more natural-speech Mercedes-Me Connect voice activation with global search.

Plus, predictive navigation with live traffic, parked vehicle locator, vehicle tracking, emergency call, maintenance management and tele-diagnostics, digital radio, Burmester 3D surround-sound system with 15 speakers and 710W amplifier, remote door locking/unlocking, geofencing, speed-fencing, valet parking, head-up display, Smart Phone integration with Apple CarPlay/Android Auto, wireless charging, ambient lighting, two-zone climate control, poplar wood trim, electric adjustment for front seats, steering column with memory function, climatised front seats, keyless entry/go with flush-fitting door handles offering hands-free access (including for the electric boot),

Besides the ‘forward facing' airbag for the rear-seat occupants, the S450L also scores electrically adjustable rear seats with memory and automatic rear climate control.

Key options – and the list is massive – include an $8700 Rear Entertainment Package, that brings rear-multimedia access, rear tablets with wireless headsets and rear-seat wireless smart phone charging, an AMG Line pack with a body kit, different alloys and larger front brakes ($6500), Business Class Package that includes aircraft-style reclining rear seating and tray tables ($14,500), Nappa leather ($5000), augmented-reality HUD ($2900), 21-inch wheels ($2000) and four-wheel steering ($2700). There's also a $14,500 Energising Package with contoured seating, heated-everything and massaging seats.

Please keep in mind our test cars featured many such extras. Tick all the boxes and you can add nearly $100,000 to the price of your S-Class.

So, is the S450 good value? Given some of the breakthrough safety and luxury features it offers, it is unique. Too bad the Federal Government's Luxury Car Tax makes them so much more expensive than they need to be.


Audi A68/10

The A6 launches with three models, the 2.0-litre, four-cylinder turbo-petrol 45 TFSI at $95,500, before on-road costs, the more premium 45 TFSI S line at $105,200, and the top-shelf 3.0-litre turbo-petrol V6 55 TFSI S line at $116,000.

Included on the A6 45 TFSI are 19-inch alloy wheels, matrix LED headlights with LED DRLs, dynamic cornering lights, automatic-dynamic headlight range control and rear dynamic indicators (the Matrix beam detects and blanks out oncoming vehicles or vehicles in front, but continues to fully illuminate other areas), keyless entry and start including a sensor controlled (leg swish) boot release, electric heated sports seats for the driver and front passenger (including memories for the driver), ‘leather appointed’ seat upholstery, three-zone climate control air, a leather-trimmed steering wheel, ‘aluminium fragment’ interior inlays, ambient lighting, and aluminium front door sill trims.

Plus, ‘Audi Drive Select’ allows the selection of various driving modes, there’s Audi’s smartphone interface providing Apple CarPlay and Android Auto connectivity, ’Qi’ wireless charging, 10-speaker/180-watt audio driven by a six-channel amp and featuring digital radio, the 12.3-inch configurable ‘Audi Virtual Cockpit’ digital instrument cluster, 10.1-inch high-res colour media touchscreen, ‘Navigation Plus’ (with 3D map display including places of interest and city models), and a third 8.6-inch colour display for the climate control system (with handwriting recognition and a favourites list).

The recently introduced ‘myAudi’ app also allows you to connect to the car and access real-time info on everything from how much fuel’s in the tank, to maintenance milestones, and service warnings. You can remotely lock and unlock the car, plan journeys (at home) and send destinations and routes directly to the car.

Then the 45 and 55 TFSI S Line models add ‘Valcona’ leather trim (seat centre panels, seat side bolsters, head restraints and centre armrest, and door trim inserts in Alcantara faux suede), a flat-bottom leather-trimmed sports steering wheel, a head-up display (colour, with speed, nav and assistance info), illuminated front door sill trims, 20-inch alloy wheels, and electronically controlled adaption of the dampers.

Engine & trans

Mercedes-Benz S-Class9/10

Where are the V8s?

Right now, the only W223 you can buy is powered by an all-new 2999cc 3.0-litre in-line direct-injection six-cylinder turbo petrol engine dubbed the M256, complete with double overhead cams, an electric compressor intercooler and assistance from a 48-volt mild hybrid system and integrated starter-generator, adding 16kW and 250Nm to the 270kW of power at 6100rpm and 500Nm of torque from 1600-4500rpm.

The 9G-Tronic torque-converter automatic transmission and 4Matic all-wheel drive system combination is a first for the S-Class in Australia.

Top speed is limited to 250km/h, while the 0-100km/h sprint-time takes just 5.1 seconds in both models. Impressive for a two-tonne-plus luxury limo.


Audi A69/10

The 45 TFSI is powered by a 2.0-litre turbo four, and the 55 TFSI by a 3.0-litre turbo V6, both featuring a mild-hybrid system recovering braking energy to enable coasting at higher speeds and in the latter case power the stop-start system.

The VW Group (EA888) engine used in the A6 45 TFSI is an iron block/alloy head single turbo unit featuring direct-injection and variable valve timing on the inlet side. It produces peak power of 180kW from 5000-6000rpm, and maximum torque of 370Nm from 1600-4500rpm.

The (EA839) engine used in the A6 55 TFSI is a 90-degree 3.0-litre, all-alloy, single (twin-scroll) turbo V6 featuring direct-injection, variable camshaft adjustment (intake and exhaust side) and variable valve timing on the inlet side. It produces 250kW from 5000-6400rpm, and 500Nm between 1370rpm and 4500rpm.

The 55’s 48-volt mild hybrid electrical system recovers regenerative braking energy to power the stop/start system and enable coasting (for up to 40 seconds) between 55-160km/h. It consists of a 10 Ah lithium-ion battery under the boot floor, a water-cooled belt alternator starter (BAS) mounted to the engine’s front end, with a V-belt connecting it to the crankshaft.

As is increasingly the norm with Vee engines from the ‘Big Three’ German brands this one has its single, twin-scroll turbo located in the V6’s ‘hot V’ to shorten gas paths from the exhaust to the turbo, and from the turbo into the inlet side for better throttle response (as in, minimal turbo lag).

Drive goes to all four wheels via the latest gen version of Audi’s quattro system and a seven-speed dual-clutch auto transmission.

Fuel consumption

Mercedes-Benz S-Class7/10

With the aid of the mild-hybrid system, the S450 returned a combined average of an impressive 8.2 litres per 100km, which translates to 187 grams of carbon dioxide emissions per kilometre. 95 RON premium unleaded (or higher) is recommended. In the urban run it consumes 11.3L/100km (11.5 for S450L), and just 6.4L/100km (6.5 for S450L) in the extra-urban result.

At 76 litres, the fuel tank will allow a combined average range of about 927km between refills.


Audi A68/10

Claimed fuel economy for the combined (ADR 81/02 - urban, extra-urban) cycle hovers all the way from 7.2L/100km for the 45 TFSI, to 7.3L/100km for the 45 TFSI S line, and back to 7.2L/100km for the 55 TFSI S line.

CO2 emissions sit in a similarly narrow band, the 45 TFSI producing 165g/km, the 45 TFSI S line 166g/km, and the 55 TFSI S line 164g/km.

Stop/start is standard on all models, minimum fuel requirement is 95 RON premium unleaded, and you’ll need 73 litres of it to fill the tank (on all models).

The local A6 launch drive program ran to the south of Adelaide in South Australia, with some freeway running followed by the twisting rural B-roads running through the McLaren Vale wine growing area. Spending most time in the 45 TFSI S line (because we’d previously driven the 55 TFSI S line) we saw a real-world average of 9.1L/100km, courtesy of the on-board computer.

In our previous review of the 55 TFSI, over five days of city, suburban and freeway running we recorded a figure of 8.8L/100km. Both numbers impressive for a close to 1.8-tonne luxury sedan.

Driving

Mercedes-Benz S-Class10/10

In former times, as the Germans say, a ‘450' on the boot indicated V8 power. In the W116 S-Class era it was one of the world's most evocative badges when ‘SEL' was also attached.

As mentioned earlier, though, it's the M256 3.0-litre turbo-petrol with a 48-volt ‘mild hybrid' electrical system that's doing the driving, to all four wheels. The real V8 W223 will probably surface later this year or in early 2022 with the S580L flagship. Bring it on.

This is not to say that S450 isn't good enough. With that electrified assistance, the blown straight six is smooth and swift off the line and rapid as the auto seamlessly steps up through all nine gears. Because it's so hushed and refined, it doesn't feel 5.1s to 100 clicks quick, but watching the speedo says otherwise – acceleration is assertive and strong right up way past the legal speed limit.

All that's missing is the burbling soundtrack of a classic Benz bent-eight. Oh well. Outstanding economy is a price we're literally willing to pay in lieu.

Even more impressive is the S450's ability to hustle along mountain roads like an overgrown sports sedan.

Now, for Australia, all S-Classes are fitted standard with an adaptive ‘Airmatic' air-suspension set-up, including air springs and self-levelling tech. In Comfort up to 60km/h, the ride height can be raised by 30mm, or lowered by 10mm under the standard 130mm baseline in Sport at any velocity, while in Sport+ it falls another 17mm.

With that in mind, yes, the standard air suspension performs a magnificent job smothering out most surface imperfections around town. Yet its real other party trick is to tighten up the chassis when corners get interesting and Sport mode is selected. Aided by progressively weighted and reassuringly responsive steering, the Mercedes tips into turns with precision and poise, slicing through with virtually no discernible body lean or understeer.

Now, we're not talking a leisurely drive on rural highways here, but Healesville's famous Chum Creek Road, where even a Porsche Cayman would feel like it's had a strenuous dynamic workout. The S-Class can be hurried along with confidence and finesse, displaying outstanding handling and roadholding for a 5.2-metre long limo. And the fact that the ride quality only suffers marginally when the red horns are out is all the more remarkable.

Back in the cut-and-thrust of inner-city peak-hour traffic, the Benz in Comfort mode continued to reveal its driver-orientated yet passenger-focused twin-personalities, zipping in and out of gaps while remaining comfy and composed inside.

Only when parking in tight spots are you truly aware that the W223 is longer than a Mazda CX-9. The optional four-wheel-steering system is claimed to slash the turning circle to A-Class hatchback levels. 10.9 metres is the claim.

The 2021 S-Class never ceases to amaze and delight.


Audi A67/10

Audi claims the 45 will sprint from 0-100km/h in six seconds, and the 55 in just over five. So, quick, and very quick.

Both are super responsive in the mid-range with peak torque available from just 1600rpm in the 45 and less than 1400 in the 55.

As is increasingly the norm with Vee engines from the ‘Big Three’ German brands the 55 TFSI’s single, twin-scroll turbo is located in the V6’s ‘hot V’ to shorten gas paths from the exhaust to the turbo, and from the turbo into the inlet side.

The aim is to sharpen throttle response and deliver power in a smooth, linear flow. And with maximum torque available from so low down in the rev range, that’s exactly the way it feels.

Select Sport mode, squeeze the right-hand pedal, and the 55’s V6 delivers a firm, consistent shove in the back. The 45 is less urgent in terms of acceleration, but more than adequate for easy highway cruising and confident overtaking.

Both are quietly quick, thanks in part to low-noise acoustic glass and comprehensive use of sound absorption materials around the cabin, remaining composed and relatively subdued as speed rises.

The seven-speed dual-clutch delivers ultra-smooth shifts at around-town speeds and crisp, positive changes in manual mode.

In normal, suburban-style conditions the quattro system decouples the rear axle and sticks with front-wheel drive economy. If all-wheel drive is required, a tricky clutch instantly activates it, in certain situations predicatively.

On top of that, in aggressive cornering torque vectoring by braking (Audi calls it ‘Wheel-Selective Torque Control’) retards the near-side wheels before they slip.

Suspension is a five-link set-up front and rear, with much of the hardware made from aluminium to fine tune response and reduce unsprung weight.

Electronically controlled adaptive dampers are standard on the S line models, with the switch between dynamic and comfort settings swift and pronounced.

Rims are 19-inch on the 45 and 20s on the 45 S line and 55 S line, but all variants are comfortable. Never floaty or unwieldy, just refined and well damped.

The electromechanically assisted steering points accurately but the assistance is overdone and road feel isn’t one of the A6’s strongest suits.

Brakes are 375mm ventilated discs at the front, clamped by six-piston alloy calipers, with 350mm rotors at the rear. They inspire confidence, with progressive feel and more than enough to confidently arrest the 1.8-tonne A6's progress.

Safety

Mercedes-Benz S-Class10/10

The W223 S-Class has not been crash-tested yet by ANCAP or European affiliate EuroNCAP, so does not have a star rating. However, Mercedes-Benz claims it has striven to create one of the safety vehicles on the planet. Who are we to argue?

Almost every conceivable safety item is standard on the S-Class, including world-first rear-seat airbags located behind the front seats in the LWB model, taking the surround-airbag count to 10.

You'll also find route-based Speed Adaptation (adhering to the posted speed limits), Evasive Steering Assist (a sophisticated form of crash mitigation), adaptive cruise control with active stop/go, Active Lane Change Assist that automatically moves the car into the lane you indicate to), Mercedes' PreSafe crash-preparation tech that primes all the safety systems for impact, electronic stability program that encapsulates all the active driver-assist tech, Active Emergency Stop Assist, Autonomous Emergency Braking front and rear (including for cyclists and pedestrians, at speeds from 7km/h to over 200km/h), Traffic Sign Assist, Parking Package with Active Parking Assist and 360-degree camera and tyre pressure monitors.

The Active Lane Keeping Assist works in a speed range of between 60km/h and 250km/h while Active Steer Assist helps the driver follow the lane at speeds of up to 210km/h.


Audi A610/10

Safety is literally five star, the A6 scoring ANCAP’s maximum rating when the car was tested in 2018, and active and passive tech is amazing.

The usual active safety suspects are all present and accounted for, namely ESC (with electronic wheel-selective torque control), ABS, ASR, EDL and ‘Brake Assist’.

But from there the list of standard tech reads like a who’s who of recent innovations, including ‘Adaptive Drive Assist’ (adaptive cruise control with ‘Stop&Go’, distance indicator, traffic jam assist and lane guidance assist), AEB (5.0km/h to 85km/h for pedestrians and cyclists, and up to 250 km/h for vehicles), ‘Collision Avoidance Assist’ (additional steering torque in critical evasive situations), rear cross traffic alert, blind spot warning, and lane departure warning.

The 360-degree camera set-up includes a kerb view function, with four wide-angle cameras covering the entire area immediately around the vehicle for improved visibility during low speed maneuveres.

There’s also an exit warning system (detects vehicles and cyclists when opening doors, triggering a warning light and delaying door opening), ‘Attention Assist’, tyre pressure monitoring, ‘Audi Parking System Plus’ (front and rear with visual display), and ‘Intersection Crossing Assist’.

That last one operates at speeds up to 30km/h, monitoring the area in front and at the side of the car, detecting “oncoming objects” at junctions and exit roads. If the situation is critical the system triggers a visual and acoustic warning as well as a quick jolt on the brakes (at speeds up to 10km/h).

But it’s not over yet, with auto headlights, rain-sensing wipers and ‘Turn Assist’ included. Turn Assist monitors oncoming traffic when you’re turning right at speeds up to 10km/h and applies the brakes if necessary.

If all those measures aren’t enough to avoid an impact passive safety leads off with front airbags for driver and passenger, side airbags for front and rear side passengers, plus curtain airbags covering both rows.

Also included is ‘Audi Pre-Sense Rear’ (tensioning of front seat belts, closing of windows and sunroof and flashing hazards on detection of an impending rear collision), the standard active bonnet helps to minimise pedestrian impact injuries and there’s a first-aid kit as well as a warning triangle and high-vis vests in the boot.

No surprise the new A6 scored a maximum five-star ANCAP rating, the assessment done in 2018 and the score applicable from August 2019 onwards.

Ownership

Mercedes-Benz S-Class7/10

Unlike many luxury brands that persist with a sub-par three-year warranty, Mercedes-Benz offers a five-year/unlimited kilometre warranty.

Intervals are every year or 25,000km, with a capped price service plan starting at $800 for the first year, $1200 for the second year and $1400 for the third year, totalling $3400. Alternatively, there is a Service Plan starting at $2700 for the first three years (saving $700 from the normal capped-price service plan), $3600 for four years and $5400 for five years.


Audi A67/10

Audi covers the A6 with a three year/unlimited km warranty, which is in line with BMW and Merc, but lags the mainstream market where five years/unlimited km is the norm, with Kia and SsangYong at seven years.

That said, body cover runs to three years for paint defects and 12 years for corrosion (perforation).

Recommended service interval is 12 months/15,000km, and ‘Audi Genuine Care Service Plans’ offer capped price servicing options over three and five years.