Audi Q5 vs Audi S6

What's the difference?

The updated Audi Q5 Sportback TFSI is a strong example of a luxury base-grade SUV, ticking most of the boxes in styling, comfort and features. It may not always outperform its rivals on paper, but it delivers where it counts, offering a refined, practical and engaging package that will satisfy.

We adore the new S6 sedan. It looks great, feels comfortable and goes like stink all at the same time. What’s not to like?

It also helps that it is relatively good value, safe and practical by large-sedan standards, so it’s a bit of a no-brainer.

But will buyers be quick to dismiss the new S6 sedan because it’s not a more practical SUV? Time will tell, but we hope not.

Does the new Audi S6 sedan represent the best mix of executive style and boy-racer performance? Tell us what you think in the comments below.

The Q5 Sportback is the more attractive sibling when compared to the standard SUV, with a shape that feels more dynamic and sport-oriented. The updated design dials back the sharper creases of the previous model in favour of softer curves, paired with slim matrix LED headlights. The revised 'Singleframe' grille has strong presence and the full-width rear light treatment adds to the Sportback’s visual appeal. Overall, it’s a very handsome vehicle.

Inside, the interior glow-up is immediately noticeable. The large new display takes centre stage in a redesigned dashboard that looks clean and appropriately sophisticated. 

There’s a good mix of materials throughout the cabin, including the beige leather upholstery, although the presence of hard plastics reminds you that this is still a base grade. Even so, the cabin largely hits the right notes for a luxury entry point.

There are a few details that don’t quite land for me. The door-mounted control panel on the driver's side feels busy and a little fiddly to use, and creates an oddly sized and positioned pull handle that just doesn’t feel nice to use. And this is very much a nitpick, but the black stitching on the beige seatbelts catches my eye all the time. None of these are deal-breakers, but they stand out in an otherwise well resolved interior.

To these eyes, the new S6 sedan is very attractive, albeit not outlandish, in keeping with its executive focus.

Up front, the subtly aggressive S body kit immediately comes into frame, with the bumper sporting sinister-looking side air intakes.

And, of course, there’s Audi’s signature Singleframe, which is not only large and in charge, but also finished in gloss-black, like many of the S6 sedan’s exterior design elements.

Below the heavily creased bonnet, the HD Matrix LED headlights look both angry and sophisticated, with their integrated LED daytime running lights (DRLs) providing a crisp signature.

Around the side, the S6 sedan goes about its business quietly, but its blistered wheelarches do add some bulk and help to accentuate its strong shoulder line.

And then there are the thick skirts and 21-inch alloy wheels (with a space-saver spare), which have a sporty twin five-spoke design. It’s all very classy.

Speaking of which, the rear end is arguably the S6 sedan’s best angle thanks to its wicked LED tail-lights, which have a segmented signature.

The chunky bumper below incorporates a diffuser element that houses the quad exhaust tailpipes, while a blink-and-you’ll-miss-it bootlid spoiler rounds out the look.

Inside, the S6 sedan is a technological tour de force, with 10.1- and 8.6-inch touchscreens dominating its centre stack. The former is responsible for most of Audi’s latest multimedia system’s functions, while the latter takes care of the climate controls.

This set-up works pretty well, although a few too many taps are required for certain functions, and then there’s the issue of the glass display coverings, which are absolute fingerprint magnets alongside the gloss-black accents used throughout.

That said, the 12.3-inch digital instrument cluster and windshield-projected head-up display on hand are brilliant. In fact, they set the standard for the entire industry thanks to their design and breadth of functionality.

The S6 sedan does, of course, feel a little bit more special than the regular A6 inside, with the obvious additions being the front sports seats, which are covered in supple Valcona leather alongside the armrests. They even have diamond-stitched inserts.

Then there’s the obligatory flat-bottom steering wheel (with paddle-shifters), which is trimmed in Nappa leather alongside the gear selector, upper dashboard, door shoulders and knee rests. Indeed, hard plastics are hard to find here.

Meanwhile, a black headliner adds to the sportiness alongside the black Alcantara door inserts, but the cabin is otherwise a familiar (read: classy) affair.

Up front, the cabin feels spacious and comfortable, with plush (heated) electric seats, while the driver also benefits from a two-position memory function, which is a plus if the car is shared. My main gripe is the short seat bases, which become noticeable on longer drives.

In the rear, comfort largely holds up, though space is better suited to two adults due to the high transmission tunnel. The 40/20/40 split-folding rear seat is a practical inclusion and helps when juggling passengers and longer items.

Storage is mostly well considered. There’s a generously sized glove box and a couple of useful storage bins in each door, although the centre console is on the smaller side. The dedicated phone tray is a highlight, housing the wireless charging pad, two USB-C ports and a 12-volt socket. Both rows get cupholders and bottle storage, while rear passengers also benefit from USB-C ports, climate control, directional air vents and map pockets. Overall, there’s just enough space and amenity for adults or teens to remain comfortable.

Technology is handled by the updated media display, which features a responsive touchscreen and a menu system that’s easy enough to navigate. Wireless Apple CarPlay and Android Auto are quick to set up, and the built-in satellite navigation is clearly laid out. That said, the near-total absence of physical buttons may frustrate some, with functions like climate control buried within the touchscreen. The number of pop-up disclaimers on start-up also feels excessive.

Boot space is where the Sportback’s sloping roofline has the biggest impact. Load height is limited, and capacity tops out at 515L with all seats in place, making it the smallest in its segment, albeit only by around 10L. I like the deep underfloor storage, along with the cargo cover, net and hands-free powered tailgate. However, the lack of a spare tyre, replaced by a repair kit, is a deal-breaker for me as a country driver, though it may matter less to those with easier access to repair services.

Measuring 4954mm long, 1886mm wide and 1446mm tall, the new S6 sedan is a large sedan in every sense of the term, which is mostly good news when it comes to practicality.

Cargo capacity is decent, at 520L, but can be increased to an undisclosed amount with the 40/20/40 split-fold rear bench stowed.

Speaking of the boot, there are four tie-down points and a cargo net to help secure loose loads, while a bag hook and a side storage net are also on hand, alongside a 12V power outlet. Bulkier items will, however, be confronted by a decent load lip.

In-cabin storage options are numerous, but not all are effective. The glovebox is well-sized, while the driver-side cubby is surprisingly large, but the central bin is shallow, mostly taken up by the wireless smartphone charger, two USB-A ports and the SD and SIM card readers.

A pair of cupholders is located in the centre console, with a 12V power outlet found in between, while the front door bins can accommodate one regular bottle each, just like their rear counterparts.

In the second row, there’s a fold-down armrest with two more cupholders as well as a shallow storage tray, while cargo nets are affixed to the front seat backrests.

The rear bench is pretty comfortable, with four inches of legroom available behind my 184cm driving position alongside decent toe-room. Headroom is also good, with about two inches on offer.

That said, three adults sitting abreast won’t enjoy the experience, due to the large transmission tunnel, which makes for limited footwell space. At least they’ll have access to a couple of USB-A ports and a 12V power outlet, below the central air vents.

For reference, child seats can be fitted to the outboard seats via top-tether and ISOFIX anchorage points.

The new S6 large sedan is priced from $149,900 plus on-road costs and is far better value than before, even if it does command a $33,900 premium over the regular A6's flagship variant.

Compared to its predecessor, the new S6 sedan is $21,480 cheaper, while Audi Australia claims it has also added $20,000 worth of kit.

Standard equipment not already mentioned includes metallic paintwork (our test vehicle was finished in Tango Red), dusk-sensing lights, rain-sensing windshield wipers, soft-close doors, auto-folding side mirrors with heating, rear privacy glass and a hands-free power-operated bootlid.

Inside, satellite navigation with live traffic, Android Auto and wireless Apple CarPlay support, digital radio, a 705W Bang & Olufsen 3D sound system with 16 speakers, a panoramic sunroof, keyless entry and start, power-adjustable front seats with heating, a power-adjustable steering column, four-zone climate control, an auto-dimming rearview mirror and LED ambient lighting feature.

Of note, buyers can opt for the $7700 Dynamic Package that bundles in speed-sensitive electric power steering, a rear limited-slip differential and all-wheel steering. It was not fitted to our test vehicle.

In terms of rivals, the BMW M550i sedan is identically priced, while the Mercedes-AMG E53 sedan is much more expensive, at $173,800. The S6 sedan arguably has the former beat on value but loses the performance battle due to its 390kW/750Nm 4.4-litre twin-turbo V8.

The Q5 Sportback TFSI is front-wheel drive and powered by a 2.0L four-cylinder turbo-petrol engine paired with a mild-hybrid system. Combined outputs sit at 150kW and 340Nm, which places it toward the lower end of the segment when stacked against rivals such as the Genesis GV70 2.5T and Mercedes GLC300 Coupe offering 224kW/422Nm and 190kW/400Nm, respectively.

On the road, however, there’s still plenty on offer for everyday driving, with power delivery feeling smooth and accessible. The seven-speed transmission shifts effortlessly, helping the Q5 Sportback feel refined and easy to live with, even if outright performance isn’t its headline feature.

The new S6 sedan is powered by a hard-hitting 2.9-litre twin-turbo V6 petrol engine that produces a strong 331kW of power from 5700-6700rpm and a punchy 600Nm of torque from 1900-5000rpm.

Compared to its aforementioned predecessor, power is unchanged, while torque has increased by 50Nm.

This unit is mated to a 48V mild-hybrid system that includes a trick Electric-Powered Compressor (EPC), which helps to reduce its turbo lag.

A reliable eight-speed torque-converter automatic transmission is responsible for swapping gears, while drive is sent to all four wheels via Audi’s rear-biased quattro system.

This combination helps it sprint from a standstill to 100km/h in an impressive 4.5 seconds, while its top speed is electronically limited to 250km/h.

The Q5 Sportback TFSI has a claimed combined (urban/extra-urban) cycle fuel consumption figure of 5.7L/100km and paired with its 65L fuel tank offers a theoretical driving range of up to 1140km. An impressive result on paper.

After a mix of long highway driving and my usual urban runaround, real-world consumption settled at 5.8L/100km, which is almost spot on.

It also highlights the Q5 Sportback TFSI’s performance/efficiency trade-off. While its outputs are modest relative to some rivals it rewards you with excellent economy in real-world use.

The new S6 sedan’s fuel consumption on the combined-cycle test (ADR 81/02) is 8.4 litres per 100 kilometres, while claimed carbon dioxide emissions are 197 grams per kilometre. Both figures are pretty keen given the level of performance on offer.

Audi says the aforementioned 48V mild-hybrid system reduces fuel consumption by 0.4L/100km thanks to its coasting ability, which sees the engine turn off for up to 40 seconds between 55km/h and 160km/h. It also engages idle-stop from 22km/h.

In our real-world testing, we averaged 14.4L/100km over 100km of driving skewed towards country roads over city traffic, with limited highway time. It’s worth noting that my spirited driving inflated this result. That said, while its fuel consumption is not as bad as it appears, this is still a thirsty sedan.

For reference, the S6 sedan’s 73L fuel tank takes 98RON petrol at minimum.

There’s enough power in the base grade to keep things engaging on the open road, whether overtaking or maintaining pace, with a reassuring sense of reserves and smooth, punctual delivery.

Despite the firmer suspension, ride comfort remains high thanks to the newly tuned damping system, which absorbs bumps without sacrificing road feedback. The cabin is quiet at speed and at low speeds the car can switch to its hybrid system for extra refinement.

I’m not a huge fan of the adaptive steering assist, particularly on winding roads, as it can overcorrect at times. Overall, though, the Q5 Sportback delivers enjoyable, sporty dynamics.

Visibility is good from the front and sides, while the rear window is a little on the small side. It’s easy to get accustomed to the car’s dimensions and a clear 360-degree camera view comes standard across all grades, providing a clear view that automatically activates during low-speed manoeuvres. Parking this car is straightforward and stress-free.

The S6 sedan has no right being this good in a straight line and around corners…

Much of its success is owed to the 2.9-litre twin-turbo V6, which is now one of my favourite engines being built today. Simply put, it absolutely hammers.

Punch the accelerator from a standing start and it doesn’t take long for 600Nm to be on tap all the way through, and just a little bit beyond, the mid-range.

Occupants are firmly pressed into their seats as the S6 sedan sprints towards the horizon with vigour. Soon enough, 331kW arrives and hangs around until just prior to the redline.

Needless to say, this acceleration is addictive, and the EPC deserves some of the credit, as it effectively mitigates any dreaded turbo lag and ensures the engine is always seemingly on boost.

But we also need to acknowledge the eight-speed torque-converter automatic, which is a real beauty. Gear changes are nice and smooth, which is great, but what’s even better is their relative quickness – dual-clutch transmissions be damned!

Of course, extra performance can be extracted by switching between the engine and transmissions’ settings but, rest assured, they both stand up, no matter what.

However, we’d suggest spending time in the former’s most aggressive setting, as it unleashes the sports exhaust system, which sounds unreal.

Upshift with intent and you’re met with a booming ‘brap’. Downshifts and the overrun will even gift you a series of pops. In fact, the S6 sedan soundtrack sounds strangely similar to that of the five-cylinder RS3, and we have absolutely no problem with that.

Better yet, the S6 sedan has an appetite for corners, with its neutral handling a standout, partly thanks to its hard-working rear-biased quattro all-wheel-drive system, which works in tandem with all the other electronics to ensure there is plenty of grip at any given time.

This controlled driving pleasure is enhanced by the electric power steering on hand, which has a variable ratio. At low speed, it’s nice and light, but those after more heft can always switch to another one of its settings, which become progressively heavier… arguably too heavy.

Feedback through the wheel is also good, while the steering itself is pretty direct, lending itself to sporty driving, which, of course, is half of the S6 sedan’s mantra.

Coming into corners, braking performance is solid, thanks to the massive 400mm front and 350mm rear discs with red callipers, so the driver is brimming with confidence at every turn, even though there’s an unladen weight (with 75kg driver and luggage) of 1985kg to manage.

But let’s not forget the S6 is an executive sedan, so it has to ride like one. Thankfully, it does. The independent five-link suspension has air springs and adaptive dampers, which serve up comfort in spades, especially at high speed.

Its firm tune does come into frame when travelling on unsealed or uneven roads, with this exacerbated by the large 21-inch alloy wheels, which have a penchant for catching sharp edges.

ANCAP awarded the A6 range (including S6) a maximum five-star safety rating in 2018.

Advanced driver-assist systems extend to autonomous emergency braking with pedestrian detection, lane-keep and steering assist, blind-spot monitoring, rear cross-traffic alert, adaptive cruise control with stop-and-go functionality, high-beam assist, driver attention alert, hill-start assist, tyre pressure monitoring, surround-view cameras and front and rear parking sensors. Yep, buyers aren’t left wanting here.

Other standard safety equipment includes six airbags (dual front, side and curtain), electronic stability and traction control systems, anti-skid brakes (ABS), brake assist and electronic brake-force distribution, among others.

The Q5 Sportback comes with Audi’s five-year/unlimited km warranty, which also includes complimentary roadside assistance - all fairly standard at this end of the market. A five-year pre-paid servicing plan is available for $3520, which is cheaper than the pay-as-you-go option, though it’s not the most competitive compared with some rivals. For instance, BMW offers the same coverage for $2475, while the Genesis comes with complimentary servicing.

You can also extend the service period by two years with the 'Audi Advantage Package' for an additional cost. Services are spaced at sensible intervals, every 12 months or 15,000km, whichever comes first, making maintenance straightforward and predictable.

The S6 sedan comes with Audi Australia’s three-year/unlimited-kilometre warranty, which falls short of the premium market’s relatively new five-year standard that was set by Genesis and followed by Mercedes-Benz.

Three years of roadside assistance is also bundled in, although this term can be extended up to nine years if the vehicle is serviced at an authorised dealership, which is great.

Speaking of which, service intervals are every 12 months or 15,000km, whichever comes first. Capped-price servicing plans are available, costing $2350 for three years/45,000km or $4110 for five years/75,000km. They’re pricey, but you weren’t expecting the opposite.