Mercedes-Benz S-Class vs Audi e-tron GT

What's the difference?

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.

Anyone lamenting the demise of V8 and V10-powered internal combustion sports cars will change their mind after driving the Audi e-tron GT.

It is a phenomenal car and you can feel the engineering expertise that’s gone into making it. 

The e-tron GT feels at home on German roads and autobahns, but a drive on Australian roads could well reveal some flaws. We will wait and see.

Until then, the e-tron GT is one of the most deeply impressive cars I have ever driven. And if you’re fortunate enough to be able to afford a car like this, perhaps it’s your next (very fast) family car?

Note: CarsGuide attended this event as a guest of the manufacturer, with travel, accommodation and meals provided.

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.

You could argue the e-tron GT was already a stunner and didn’t require any visual changes, but Audi has still made a few tweaks. Thankfully, they are relatively subtle.

The 2025 e-tron GT gains refreshed front-end styling with a new front grille, headlights and lower bumper and air intakes. The look is inspired by Audi’s latest design language as seen on the recently revealed A6 Avant e-tron.

The S has more subtle front and rear styling, while the RS and RS performance take on a more aggressive and sporty look with a dramatic rear diffuser and different lower front styling. 

The RS performance further differentiates itself from the RS with an optional matt, darkened carbon roof and optional ‘carbon camouflage’ elements found in the embossed bumper, door trim, parts of the diffuser and side mirrors.

Audi has introduced some rather gorgeous new alloy wheel designs, some standard, some optional.

I had forgotten how stunning the e-tron is in the metal. You can see by its stance that it’s related to the Porsche Taycan - they share the 'J1' platform.

Despite the low-slung sports sedan vibe, they have their own distinct identities. If you’re after elegant clean design, you’ll likely favour the Porsche. But I am increasingly leaning towards the Audi on the design front.

Inside you get redesigned sports seats, a new steering wheel and fresh inlays, including sustainable wood on some grades. I love the new steering wheel, covered in Audi’s version of synthetic suede. BMW take note - you don’t need a big chunky steering wheel in a performance car. This rim is just right.

There’s new readout and graphics for the digital driver display and the carpet and floor mats are made of 100 per cent recycled nylon fibres. Audi’s used synthetic suede and leather throughout, and the non-leather grey cloth trim in the S is a knockout. But you can get real leather if you want.

Some of the grades we drove at the launch event come with Audi Exclusive elements which add unique touches and colours chosen by the customer, from the interior inserts, trim, stitching and more. Audi Australia isn’t saying too much but some of these Exclusive options might end up here eventually.

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.

The e-tron GT is a big car, so it has potential for family duties, but it’s also a sports car, and that means some compromises. 

The new front sports seats in any of the various trim options offer incredible levels of comfort, ample support and they’re well cushioned. This is a Grand Tourer so comfort is important and that box is well and truly ticked.

It’s low to the ground which helps with feeling connected to the road, and the multi-adjustable seats and steering wheel mean it’s easy to find your perfect driving position.

With the addition of new air suspension as standard, the e-tron GT has a neat trick. When you touch the door handle, the set-up automatically increases the vehicle’s ride height by up to 77mm to make it easier to get in and out of. \

Don’t expect much visibility out the tiny rear windscreen, but you can rely on the clear surround-view camera display. 

From the driver’s seat, everything comes easily to hand. The multimedia screen isn’t a stretch to reach, nor are the buttons on the stack and console. Thanks for keeping buttons, too, Audi.

Audi’s current multimedia setup is solid. It has big menu icons, logical menu steps and you can swipe across for more.

The ‘Virtual Cockpit’ digital instrument cluster is also excellent and easily customisable. The built-in sat nav shows up in multiple places if you like, such as the head-up display, instrument display or multimedia screen. During our extensive drive from Frankfurt, it didn’t miss a beat.

The optional panoramic glass roof has a cool feature. You can switch from opaque to clear with the touch of a button. And you can even have a mix of the two. Clever.

To maximise space, Audi moved the phone charger to inside the central bin. Given it is hard up against the side, it doesn’t consume that much room.

Elsewhere up front, smaller bottles will only fit in the door pockets if they are lying flat.

In a smart bit of design from Audi, the battery pack is split to accommodate deeper footwells for the rear passengers. So many electric cars, especially sedans, suffer from having the battery pack under the entire length of the vehicle's floor which means your legs sit awkwardly upright. Hello Tesla...  

As a result, you can sit like a normal human in the back of the e-tron GT, and there’s ample legroom behind my six foot-plus driving position. That’s helped by scalloping the rear of the front seats. Headroom is tight but that’s expected given the swoopy roofline. 

There’s no bottle storage in the rear doors, only enough room for a phone. You get lower air vents, seat heating controls and a central fold-down armrest with cupholders. 

The boot is long and the 60/40 split seats fold flat which is handy for loading long items. There are a number of nooks and a handy cargo net, too. Luggage space ranges from 405 litres for the S e-tron GT to 350L for the RS performance. There’s a sizeable front trunk for housing charging cables.

Audi has not revealed pricing or Australian specification for the 2025 e-tron GT as it’s not set to arrive Down Under until some time in the first half of 2025.

However, pricing has crept up a little in Europe so expect the same here. For reference, current pricing starts at a tick over $181,000, before on-road costs, and climbs to $250,000.

Previously there were just two grades - the entry-level (if you can call it that) e-tron GT and the top-spec RS e-tron GT. Audi has increased the range from two to three grades. 

The new entry point is called the S e-tron GT, followed by the RS e-tron GT, and now Audi is offering an RS e-tron GT ‘performance’ grade.

This is the first fully-electric Audi RS to get the ‘performance’ tag that’s found on other models like the RS6 Avant. The performance model is also the most powerful production Audi model ever made.

Audi Australia is believed to be considering all three grades for a local launch. 

As mentioned, standard gear is yet to be confirmed but expect items like wireless phone charging, sports seats, electrically adjustable driver’s seat with memory function, a head-up display and more.

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.

The fully electric e-tron GT has two motors - one on each axle, ensuring ‘quattro’ all-wheel drive traction.

For the S e-tron GT, the total system output is 430kW of power (or up to 500kW in launch control mode) and 740Nm of torque. 

That’s more power than the previous RS e-tron GT, and enough to get it from zero to 100km/h in 3.6 seconds.

The RS now pumps out 500kW (630kW in launch control mode, no total torque figure available) and can hit triple digits in 3.1 seconds, while the new RS performance flagship boasts impressive outputs of 550kW/1027Nm (680kW in launch control mode) for a dash time of 2.9 seconds. These 0-100km/h times improve in launch control mode.

A newly developed air suspension is standard across the range, and tech wizardry like active suspension and rear-axle steering are optional.

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 has reduced the weight of the battery pack by 9.0kg while also increasing energy density.

Audi has also improved the charging rate which now peaks at 320kW, up from 270kW.

The 105kWh lithium-ion battery on all grades can be charged from 10 to 80 per cent in just 18 minutes using a high-power charging station, according to Audi.

AC charging is 11kW and doing that at home will take about 11 hours from depleted to 100 per cent.

The update to the information in the instrument cluster includes details about current operating state of the battery, including temperature, a quick-charging forecast and the pre-conditioning status.

Driving range is impressive and runs from up to 609km on the WLTP cycle for the S e-tron GT, up to 599km for the RS e-tron GT and up to 592km for the RS e-tron GT performance.

Energy consumption ranges from 18 to 19.7kWh/100km for the S, 18.4-21.1 for the RS and 18.7-20.8 for the RS performance.

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.

Having the air suspension increase the ride height to get into the e-tron GT is useful, given how low to the ground it is. Once you’re in, you’ll nestle into the sports seats and feel a real connection with the road.

Audi’s generated EV noise sounds like the low, deep growl of a V8, but dialled down. It’s very cool.

The new RS e-tron GT is quick but it delivers acceleration in a smooth, linear manner. There’s no neck-snapping ‘Ludicrous’ moment here. Just straight line performance that will elicit the word ‘wow’ multiple times.

Picking up pace at speed is a breeze - as we discovered on Germany’s autobahns - thanks in part to a ‘push to pass’ button on the steering wheel that adds 70kW of power for 10 seconds, when you need to overtake quickly.

The steering is sharp, but almost a little too sensitive in the RS, to the point where you need to be conscious of your steering inputs. You don’t want to overdo it, but if you do, the onboard electricals should keep things in check. That beautiful steering wheel adds to the engagement.

Audi’s engineers deserve plaudits because they’ve somehow made a five-metre long, 2.3-tonne electric sports sedan feel light and nimble. 

It is dead flat in corners without a hint of lean or body roll and navigates tight bends with a surefootedness that is astounding. 

Accelerating out of a corner is executed without fuss and will bring a smile to your dial, helped in part to the optional rear-axle steering.

The technical wizardry that is active suspension - it uses cameras and radars to analyse the road surface ahead and moderate the dampers and the like accordingly - is impressive.

The ride quality of this heavy car with 21-inch rims is a surprise. You’ll notice road joins and bigger corrugations but overall it's quite composed.

And that’s part of the beauty of the e-tron GT. Its Porsche Taycan cousin is a more focused sports car. Whereas the Audi e-tron GT is a Grand Tourer or Gran Turismo if you will.

Yes, it’s incredibly powerful and is blisteringly fast, but it’s also a comfortable cruiser, and something you could easily live with every day.

The S e-tron GT could be all the Audi you need. It’s still incredibly quick, but not as powerful as the RS. It is the more subtly styled model which will appeal to an understated buyer.

A brief stint on a makeshift track in the e-tron GT performance grade highlighted how the active suspension, rear-axle steering and other tech gubbins help it hold the road so well.

It’s an extraordinary car to drive and taking a different approach to Porsche has served Audi very well indeed.

The advanced safety gear is well calibrated and not intrusive. While the speed limit alert can be annoying, the speed sign recognition is spot on. Let’s see how it goes with Australian speed signs next year.

The e-tron GT is a little too niche to warrant crash testing by ANCAP or Euro NCAP so it doesn’t currently have a score.

It comes with safety gear like lane change warning with exit warning and rear cross-traffic alert, adaptive cruise with a speed limiter, surround view cameras, AEB, swerve assist and more.

Full local specs will come ahead of the 2025 local launch.

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.

The e-tron GT comes with Audi’s five-year, unlimited kilometre warranty which is fairly standard for the premium segment. The battery warranty is eight years or 160,000km.

Impressively, the outgoing model comes with six years of complimentary servicing by Audi, and the schedules start at every two years or 30,000km. This should carry over for the new model but will be confirmed when the rest of the pricing and specs are locked in.