Audi A8 VS Audi S4
- Unmistakably Audi
- Amazing interior design
- Groundbreaking safety features
- Pricey options
- Most of its autonomous tech locked out for Aus
- Understated looks
- Goes like stink
- Overly heavy steering in Dynamic mode
- Tyre roar on some surfaces
- Can feel a bit computer-driven
In a world where genuine wood trim and nappa leather comes in a Mazda6 for under $50,000, premium brands like Audi have been forced to come up with new hallmarks to underpin their status and asking prices.
The new, fourth-generation Audi A8 is no different, packing hardware capable of autonomous driving well ahead of what is currently allowed on any public roads, along with an array of safety, efficiency and convenience firsts for the brand that cement the model's position at the top of the four-ringed luxury tree.
The current S-Class may measure your vital signs and aim to improve your general well-being, but it won't give you a foot massage. If you tick the right options boxes, the new A8 will.
We were among the first to drive the new A8 at its Australian launch around Sydney last week.
|Engine Type||3.0L turbo|
Peter Anderson road tests and reviews the new Audi S4 sedan and Avant, with specs, fuel consumption and verdict at its Australian launch between Bathurst and Canberra.
Sometimes year a year flashes by and it's almost a shock to realise that Audi's B9 A4 has been with us here in Australia for almost that long. Performance buffs have had to wait for the first quick version of the A4 while the Allroad was rolled out, but here we finally have the first Audi Sport variant in the line-up - the S4.
As with the standard A4, there's a stack of new stuff and a stout standard specification list along with technical packages. There's one big piece of news, too - it's the first S4 to land with a price tag under $100,000.
|Fuel Type||Premium Unleaded Petrol|
The new A8 is a very accomplished machine, and can certainly be optioned up with enough toys to entertain and comfort whether you're riding in the front or back.
It's not possible to say if its better than the S-Class or 7 Series in isolation, but it has a unique design ambience that's unmistakably Audi. If you're a four-ring devotee, you won't be missing out.
Based on this test, the sweet spot of the range is the long-wheelbase 55 TFSI. At this end of the market, it's fair to say the extra $12,000 for the added length and $3000 for the smoothest and most powerful engine are worth it.
Regardless of the bigger wheels, we'd probably spring for the Premium plus package and the Executive package's rear seat with the Entertainment package for all the most impressive toys. This would mean a total list of almost $250k, but it's arguably how Audi intended the new model to be.
Also check out Peter Anderson's video review from the A8's international launch:
Would you consider the new A8 over an S-Class or 7 Series? Tell us what you think in the comments section below.
It's not an exuberant machine and you can tell there's still a ton of room for the inevitable RS4 mean machine to go after the BMW M3/M4 and AMG C63. That means, however, that the S4 is a proper sleeper. Hardly anyone will notice what it is until they're eating your fumes while you whisk yourself away in (mostly) quiet and comfort.
The new S4 is lighter, slightly faster and more technologically advanced than its predecessor, while bringing the A4's charms to the go-faster part of the executive sedan segment. This one will rattle a few cages.
Audi S4 Sedan and Avant Specifications
List price: $99,900 (Sedan) / $102,900 (Avant)
Fuel Consumption: 7.7L/100km (Sedan) / 7.9L/100km (Avant)
CO2: 175g/km (Sedan) / 178g/km (Avant)
Fuel Tank: 58L
ANCAP: 5 stars
Warranty: 3 years/unlimited km
Service Interval: 15,000km or 12 months
Engine size: 2995cc
Fuel Type: PULP
Transmission: 8-speed automatic
Spare: space saver
Turning Circle: 11.6m
Length: 4745mm (Sedan) / 4745mm (Avant)
Width: 1842mm (Sedan) / 1842mm (Avant)
Height: 1404mm (Sedan) / 1411mm (Avant)
At first glance the new A8's exterior styling may look a tad obvious, with unmistakably Audi design adding a bunch of straight lines to make things look more serious.
The reality is far more considered, being the first whole design to emerge under Audi Design boss Marc Lichte's stewardship. Previewed by the first Prologue concept in 2014, the result has an elegance that underlines its position as Audi's flagship and is less likely to be confused with an A6 than the S-Class can be with the E-Class.
If you're after the ultimate in design details and lighting performance, you can also opt for $13,200 laser headlights that can double the range of LED headlights to 600m ahead. This option also brings OLED tail-lights with jewel-like filaments less than 1.0mm thick.
Compared with the third-generation model it replaces, the size of the new A8 is 37mm longer, 13mm taller but 4.0mm narrower, riding on a 6.0mm longer (2998mm) wheelbase. The long wheelbase version is 130mm longer again in wheelbase and overall.
In A8 guise, it combines aluminium, steel, magnesium and CFRP to result in the biggest material variety used in an Audi to date. Kerb weight ranges from 1995kg for the short-wheelbase petrol model to 2020kg for the long-wheelbase version, with the diesel versions adding 55kg respectively.
A 15-spoke, 19-inch wheel design is standard for Australia, but the Premium plus package fitted to all the cars we tested brings a 10-spoke 20-inch design, while the options list includes another three choices of 20-inch wheels. You can also get 21-inch alloys with the optional Sport package.
As you'll see in the interior images, the A8 represents another significant step forward for Audi design, with horizontal themes and numerous traditional controls now hidden beneath touchpads.
Key among these is the deletion of the centre console controller for the multimedia system, which has been replaced by an 8.6-inch secondary touchscreen beneath the 10.1-inch main screen. Apple CarPlay and Android Auto smartphone interfaces are available via USB connection, and the A8 will act as a mobile Wi-Fi hotspot if you sign up for a data plan.
This split layout is less imposing than using one giant screen as in a Tesla, and both give haptic and acoustic feedback to commands to simplify use while driving. All versions also score the excellent 12.3-inch 'Virtual Cockpit' display ahead of the driver.
All A8s also now get a smartphone-like back seat remote controller, which enables control of temperature settings, seat adjustment, lighting, media functions and window blinds (when optioned) via its 5.7-inch OLED touchscreen.
Another surprise detail is that the interior door handles are now power assisted, which represents the lengths Audi has gone to in reducing control weights.
Audi tells us that S4 owners don't like to shout about their purchase, which is just as well, because the S4 looks like a very mildly gussied up A4. That means the same sharp looks as the A4 but lower, 23mm to be exact. The standard 19s make it look lower still but all the standard A4 cues are there. This has been covered at length already, but just to be sure, every inch of the car is new, it just looks a lot like the old one.
Get up closer, though, and you'll see the serrated shape of the headlight, the clamshell bonnet and shutlines tighter than Scott Morrison on Budget night when it comes to funding hospitals. Audi says the body kit is aggressive but I think it's safe to say that the drug of choice at Audi's styling bureau is chamomile tea - it's fairly restrained, with just a few details (including a slightly daggy V6T badge on the front guards) to mark it out.
Inside is standard A4, too, with plenty of leather (both real and man-made), with some extra zing in the form of carbon and aluminium bits.
It's as roomy and comfortable as the standard car and looks just as good. It's a fine interior, the best in its class.
Choosing the biggest sedan in the line-up isn't just about outdoing your neighbours, it's also fair to expect enough room to stretch out and ponder your stock options.
Despite the new A8's minor 6.0mm wheelbase growth, the interior dimensions have grown 32mm in length, which has expanded legroom as well as headroom.
Fundamental practicality elements are covered as well, with a cupholder and bottle holder for each outboard passenger, an array of USB and 12-volt charge points and two ISOFIX child seat mounts for the back seat. There's also a Qi wireless phone charger within the centre console.
Boot space is a useful 505 litres, and while there's no split-fold for the back seat, there is the capacity to bring curtain rods home from Bunnings via the ski port. There is also a space saver spare wheel beneath the boot floor.
The S4 has four bottle holders, cupholders front and rear for a total of four and various slots and spots for phones and keys in the front while the rear is a little less accommodating of bits and pieces.
The sedan's boot is the same as the rest of the A4s (and mid-size Germans) at 480 litres while the Avant bumps that up to a 505 litre minimum and a 1510 litre maximum when you drop the seatbacks.
Price and features
The fact that the new A8's entry price has dropped almost $6000 to $192,000 is likely to have less impact than a $19,990 Hyundai i30 special, but Audi's claim that it offers up to $36,000 more value than before may lower a few bifocals.
Introducing Audi's new naming scheme, which no longer makes reference to engine capacity in preparation for electrification, the diesel base model wears a 50 TDI badge, before moving $3000 north to the petrol 55 TSFI. Either models can be had in long-wheelbase form (signified by a capital L after A8) which will cost you an additional $15,000 respectively.
The $210,000 A8 L 55 TFSI at the top of the price list is more than $42,000 cheaper than the previous V8 diesel 4.2 TDI and a more than $120,000 less than the previous S8 Plus, but a new performance flagship is due to appear in the near future.
Value is rather subjective at this end of the price scale, but by comparison the entry RRP for the new A8 undercuts the base 7 Series by $34,900, the S-Class by $3900, but starts $1871 above the Lexus LS.
Both the A8's 50 and 55 engines come with the same trim levels, but when the standard kit is this lengthy it's more a matter of features not included in the A8, rather than those that are.
As you might expect, there's an array of options available. These accessories range from the aforementioned wheel choices and laser lighting to $3600 Alcantara headlining, $4500 all-wheel steering, a $5200 night vision system, or $12,100 3D Bang & Olufsen sound system with 23 speakers.
There are five options packages also, starting with the $6690 'Entertainment package' which brings a six-disc DVD/CD changer (on top of the standard DVD/CD player) and twin tablets for the rear seats which mount to the front seat headrests.
The nappa leather trim can be expanded to the upper and lower dash and glovebox, door trims, headrests, centre console, steering wheel airbag cover and the backs of the front seats with the 'Full leather package' for an extra $9950.
If you can't hold out for the sport edition S8, you can almost look the part with the $9950 'Sport package', which brings a more aggressive front and rear bumper, 21-inch wheels, all-wheel steering and expanded 'piano black' interior trim.
Audi Australia tells us all A8s ordered to date (along with both cars pictured here) have ticked the $11,000 'Premium plus package', which brings 20-inch rims, adaptive windscreen wipers with integrated jets, chrome exterior details, ambient lighting with variable colours, black control buttons, digital TV, electric rear sunblinds, the full leather package mentioned above, interior fragrancing with ionisation technology, rear tinted windows, softer rear headrests and ventilated massage front seats.
If you've already selected the rear seat entertainment system, you can also choose the $18,500 'Executive package' which brings individual reclining back seats and extended centre console - which also eliminates the centre rear seat - with folding tables, front and rear seat ventilation and massage function, heated armrests all round and a heated steering wheel. It's the Executive package that also brings the heated rear passenger-side footrest and the foot massage USP.
The S4 is available in two versions - sedan and Avant wagon. The sedan opens the bidding at $99,900 and the Avant closes it at $102,900. Both come with identical specifications and are available with much the same options. For a bit of pricing perspective, the first S4 was an Audi 100-based five-cylinder turbo that landed with a price tag of $132,000. In 1993.
The S4 has arrived with 19-inch alloys, adaptive dampers, around-view camera, reversing camera, up-spec sat nav, adaptive cruise control, auto parking, auto headlights and wipers, high beam assist, keyless entry and start, electric tailgate (Avant only), heated folding electric mirrors, LED headlights, dynamic scrolling rear indicators, electric heated sports front seats, leather and Alcantara trim, three-zone climate control and interior LED lighting.
A ten speaker stereo is powered by Audi's MMI rotary dial system and the same 8.3-inch screen as the rest of the A4 range, which also means you get Apple CarPlay and Android Auto as well as two USB ports in the centre console to go with the Bluetooth. There's also a DAB+ digital radio.
Audi's Virtual Cockpit is standard and has an additional S mode which switches the dial view for a big tacho and a huge digital speed readout.
Being an Audi, you can get a collection of options in packs. The S Performance Package ($5900) adds an excellent pair of massaging S sport front seats with diamond stitching and Nappa leather, red brake calipers, more (synthetic) leather and carbon inlays in the interior.
The Technik Package adds the excellent matrix LED headlights, the 19-speaker B&O 3D sound system and a heads-up display.
Other options include variable ratio Dynamic Steering ($2210), quattro sport differential ($2950), premium paint (ahem, $1846), panoramic sunroof (Avant only, $2990), sunroof ($2470, sedan only), heated rear seats ($750) and the rear seat entertainment system ($2600-$4680 for one or two screens respectively, but you can't have it with the S Performance pack)
Engine & trans
You might be surprised to learn there's no V8 in the new A8's arsenal - for now, the S8 could change that - but an even greater sign of the times is the return of a petrol version for the first time since 2013. Efficiency gains are the main reason for the petrol comeback, which is explained in detail under the fuel consumption heading below.
Both the 210kW/600Nm 50 TDI turbo-diesel and 250kW/500Nm 55 TFSI petrol specifications use 3.0-litre turbocharged V6s which may seem to be simply plucked from existing models, but they bring mild hybrid technology to the Audi line-up for the first time.
Unlike conventional hybrids that use an electric motor to provide horsepower to drive the vehicle, a mild hybrid (or MHEV) enables the combustion engine to be switched off when the vehicle is coasting or braking, or effectively as an extension of a start/stop system which conserves fuel when a car is stationary.
The A8's mild hybrid system is facilitated by the move to a 48 volt electrical system, with a supplementary 10Ah lithium-ion battery mounted in the boot to keep the electrical systems fed for up to 40 seconds with the engine switched off. Audi claims the system has the capacity to save up to 0.7L/100km.
An extra starter motor has been integrated with the alternator to restart the engine more smoothly via a belt, rather than the conventional cog and ring gear used by the dedicated starter motor for cold starts.
Both engine specs deliver their max torque rating from just above idle, with the 50 TDI at 1250rpm and the 55 TSFI at 1370. Claimed 0-100km/h acceleration performance figures are an impressive 5.9s and 5.6s respectively.
Like all recent longitudinal-engined Audis, the new A8 uses a version of ZF's much lauded eight-speed torque converter auto gearbox, and both engines send power to all four wheels via the 'quattro' all-wheel drive system.
The optional all-wheel steer system can twist the rear wheels by as much as five degrees, reducing the turning circle by around 1.0m at slow speeds. While at higher speeds, the rear wheels move parallel with the fronts by as much as two degrees to improve stability, particularly for rapid lane changes and evasive manoeuvres.
All new A8 variants carry a maximum braked towing capacity of 2300kg.
Audi says the turbocharged V6 is brand new from the ground up. Developing 260kW (15kW up) and a nice round 500Nm (up 60Nm), the new engine is 14kg lighter than the supercharged unit it replaces, and more efficient.
Efficiency gains come from clever things like a "hot side inside" turbo placement (inside the V, meaning shorter exhaust paths to better turbo pressure), lift-off coasting and start-stop.
Power reaches the road via an Audi Sport tweaked quattro system which can send 85 percent of power in either direction and is rear-biased with a standard 60/40 rear/front torque split. The seemingly ubiquitous and always excellent eight-speed ZF transmission handles the job of getting the power from the engine to the road.
The standard self-locking centre diff can be flung and replaced with a trick quattro sport unit ($2950) with electro-mechanical control of the rear axle's torque split.
The sedan will rocket to 100km/h in 4.7 seconds, the slightly heavier Avant two tenths behind it.
Gone are the days where full-size luxury sedans got away with devil-may-care fuel consumption, and even though they still spin six cylinders and need to move around two tonnes, the 55 TFSI petrol versions manage an 8.2L/100km official combined figure. This is when using at least 95 RON Premium unleaded of course.
As you'd expect, the diesel fuel economy is even better with 5.9-6.0 official figures across wheelbases.
With a fuel tank capacity of 72 litres, this suggests a theoretical range between fills of 878km for the petrol models, and between 1200-1220km for the diesels. The A8's spec sheet lists the option of an 82-litre tank if they aren't quite far enough for you.
Audi claims 7.7L/100km from the sedan and 7.8L/100km for the Avant. On a stinking hot day in central NSW and the ACT and with the accelerator spending a lot of time carpet-bound, the S4 still returned around 12L/100km. More time being driven less enthusiastically should see a marked improvement.
Our test started in the worst of Sydney morning traffic, which presented the chance to put the latest adaptive cruise assist (ACA) system through its paces on a very clogged Eastern Distributor.
I'm a huge fan of active cruise control systems that guide the vehicle from speed to a stop, but the A8's ability to start moving again is another step beyond. It helps you avoid being ‘that guy' who hasn't noticed the traffic moving, and would no doubt work wonders for traffic flow if all cars were so equipped. Given the chance, Audi says this system works all the way from 0-250km/h.
No matter what your reaction to the A8's exterior, the freshness of the interior design is like no other, and everything you touch feels first class.
The four-spoke steering wheel has a surprisingly large diameter and is shared with the upcoming A6, but uses thinner spokes than the norm to promote visibility of the virtual cockpit display as the wheel is twirled.
The haptic and acoustic screens make it as easy as we've experienced to handle a touchscreen while driving, but not quite as simple as the previous console controller.
Front and rear seats are softly padded for comfort rather than support, and unsurprisingly there's ample room in every direction for this 172cm tester, regardless of wheelbase.
All examples of the A8 we drove were optioned with the Premium plus package, which means one inch larger 20-inch alloys. Despite all A8s coming standard with adaptive air suspension, small bumps like cats eyes and expansion joints are more noticeable than you might expect. As is often the case, the standard 19-inch alloy wheels are likely to be the solution.
We drove both engines and wheelbase choices at the A8 launch event, and you need to be paying close attention to hear any extra noise from the diesel. It does make a muted groan under throttle, but likely worth the 300-plus kilometres of extra range if that's what you're after.
The diesel's smoothness is also no doubt aided by its use of active engine mounts. If you're after outright refinement and performance, the petrol is the one for you but neither feel in any way sluggish.
Heading through the bends of the Royal National Park and then back over the hills via Macquarie Pass at pace, there was no disguising the fact that the A8 is a big car, and it tends to float unless you select 'Dynamic' from the drive mode selector. Regardless of mode, it's more planted than any luxury SUV.
Making a bee-line back to Sydney via the Hume, the A8 simply wafted along at 110km/h in near silence. As you'd expect.
The S4 is terrific fun. It's that simple. The new engine is an absolute belter, with all 500Nm of torque available at just 1370rpm. Lag is almost indistinguishable as the turbo spools up and rockets you along to 100kmh in under five seconds, that huge half-ton of torque sweeping you down the road.
With dynamic mode switched on, the car muscles up with firmer suspension and a slightly growlier exhaust. The steering really weights up, too, which takes a little getting used to after the lighter, friendlier setting in Comfort mode - thankfully you can set up an individual mode to dial the assistance back in while everything else is set up for go-fast.
The key to the fun is the rear-biased quattro system - while it's never going to match the purity of BMW's rear-wheel drive 340i, what you lose in steering feel and ultimate adjustability, you gain in off-the-line and mid-corner grip its German rivals could only dream of.
Going fast in an S4 is easy, leaving you to concentrate a little more on your line and gear selection, listening to the distant bark of the engine and the occasional turbo whistle. All of this is purely down to driving taste, of course but the point is, the S4 offers something a little different to the other two.
For most of the time the S4 defies its 1700kg-plus weight but there is the occasional hesitancy when changing direction through a challenging set of bends, as though the front tyres (245s all around, if you're interested) want to scrub and the quattro system makes a quick adjustment to stop it happening. You don't feel that's what's happening, of course - Audi Sport is better than that - but it's part and parcel of all-wheel drive. It takes a lot to find understeer and for most people, that just won't ever happen.
Further confidence comes from the terrific brakes - 350mm up front and 330mm at the rear, the big forward rotors are gripped by six-pot fixed calipers. Performance is epic and in hard, fast driving they stood up to a fair amount of punishment without fading.
The ride is excellent in all modes, which is quite an achievement given the fat rubber and big wheels, although big bumps at speed make a huge metallic thunk without actually upsetting progress. The eight-speed ZF is brilliant as always and unless you're really motoring, you don't even need its sport mode, which brings impressively fast and positive shifts.
The best thing is, if you don't look in the rear vision mirror, you can't really tell if you're driving sedan or Avant. That might be because it's quite absorbing on a launch drive, but I couldn't split the driving experience between the two.
The only black marks I could easily identify on the S4 is tyre noise on some surfaces and perhaps the steering could be a little more lively like its competitors.
The airbag count has been further bolstered by an industry-first centre airbag, which has been designed to prevent head clashes between front seat occupants. This also represents Audi thinking beyond any Euro NCAP or ANCAP criteria.
It also comes with Audi's exit warning system, which warns the driver of passing cars or cyclists but can now delay the door opening in case the driver doesn't see the warning light.
A front-mounted laser scanner replaces the usual radar system for active cruise control and front AEB, which doubles the range of a radar scanner to 80m and enables both functions to work at speeds up to 250km/h.
This laser scanner is also key to the A8's Level 3 autonomous preparation, but local laws limit its capability to active cruise control with lane assist.
The S4 also retains the exit warning feature that tells you if you're about to door an approaching bicyclist or another car. What Audi calls "pre-sense rear" is a system to warn drivers behind you they're approaching too fast and are quite likely to hit you. Turn assist is also available, stopping you (at low speeds) from turning across approaching traffic.
The A4 scored five ANCAP safety stars, the highest available.
Like all Audis, the new A8 is covered by a three year, unlimited kilometre warranty. This is short of the five year-plus periods becoming more common among mainstream brands, but equal to the terms offered by BMW and Mercedes-Benz. Lexus differs by offering a four year, 100,000km plan.
Service intervals and capped price servicing mirror the previous A8, with a 12 month/15,000km schedule, and maintenance costs for the first three services can be wrapped into a package for $1900.
We had no issues during our test, but any common faults, common problems or reliability issues are likely to appear on our A8 problems page.
Audi offers a three-year/unlimited kilometre warranty on the S4 with service intervals of 12 months or 15,000km whichever comes first. Roadside assist is part of the package, lasting for the first three years of the car's life.
You can pre-purchase three years/45,000km of servicing for $1620 under Audi's Genuine Care Service Plan. Full details are available on Audi's website, but it basically covers a scheduled oil changes and inspections and not a lot else.