Audi Sq8 E-Tron vs Mercedes-Benz GLE-Class

What's the difference?

There’s not doubt large, luxury SUVs like the SQ8 have a lot to gain from electrification in terms of refinement, performance and running costs. The flip-side is the extra mass of the batteries and other electrical gear but, in this case at least, there might be a silver lining there in the way the hulking SUV manages to force the air suspension into agreeable submission.

For our money, the station-wagon variant is the one to buy. It’s cheaper to begin with and with its greater luggage capacity, it simply makes more sense. Which is not to say the Sportback version is compromised in luxury, safety or performance terms, but if practicality doesn’t figure highly in any purchasing decision involving an SUV, then we sense a great disturbance in the force.

Regardless of what’s powering the SQ8, the driving experience is vintage Audi and that’s a good thing, and even that massive kerb mass can’t blunt the sort of chassis dynamics and feedback we’ve come to expect from the brand.

Some buyers will possibly baulk at the projected range and the Audi’s appetite for electrons, but when lined up side-by-side with its major competition, the SQ8 is every chance to emerge as the one to buy. We’ll need a proper comparison for that, of course, but the Audi should be on any short-list of big, deluxe, electric SUVs.

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

If you can get past the relatively steep asking price, the design appeals to you, and its slightly last-gen ergonomics work for you, then there’s a lot to like about the GLE. It’s a big, capable and comfortable cruiser, but given there are cheaper and more efficient options around, it would be a decision of the heart rather than the head.

Stylistically, the big news is that the SQ8 is the second model to take up Audi’s latest exterior design language. That includes the two-dimensional Audi grille logo as well as a 'singleframe' (Audi’s own word) light bar that links the matrix headlights.

The SQ8 also gets Audi’s Sport Package as part of the price of admission, and that includes black roof rails and other touches.

Of more technical interest is the way the front of the car has been designed to aid air flow around the front wheels. Controllable flaps in the front fascia as well as underbody winglets keep the air flowing around the wheels without contributing to excess aerodynamic drag at speed.

In an engineering sense, the big news is the adoption of a three-motor layout. While some manufacturers are yet to see the value in this, having a motor on each of the rear wheels means there’s no longer a need for a rear differential.

The GLE hasn’t changed massively since 2019, but sleeker lights and some tweaks around the face have helped it age relatively gracefully. As much as a 2.4-tonne SUV can be graceful.

There are still references to the original ML-Class the GLE succeeded, like the ‘coupe’ shape of the C-pillar that betrays the true SUV shape of the GLE.

The reshaped front-end has less black plastic on show, and its grille stays true to the pre-facelift design.

Inside, it’s just the steering wheel that’s new, everything else holds up well in terms of a design that’s also practical, though some would say it looks outdated given the many physical controls.

There’s absolutely no question Audi knows a thing or two about cabin layouts and ergonomics. Like other contemporary Audis, this one features the fully customisable Virtual Cockpit with a huge range of possible displays and layouts. And again, as usual, it all works seamlessly and efficiently.

The head-up display is amazingly clear and the twin touchscreens divide the car’s tasks logically. Yes, there’s a lot going on, but compare the way the Audi applies logic to the menu strategy to the scatter-gun approach of many others, and you can see that plenty of thought has gone into this stuff.

Also, it goes without saying, of course, that there are multiple charging points as well as plenty of connectivity with good wireless connections available. That includes wireless phone changing.

The front seats are sporty but not too firm, even if they do give you a bit of a squeeze thanks to high bolsters and lots of contouring. The rear seat is likewise firm initially and is really best for two backsides thanks to the sculpting of the rear bench.

That said, it will accept a centre passenger, but that seat will be the last one occupied. Rear legroom – important in a car like this - is good, there’s enough room for your feet under the front seats and headroom, even in the allegedly racier looking Sportback, is ample if not huge.

The panoramic sunroof means there’s plenty of light to counter the dark interior colours, and the only real surprise is the amount of hard plastic on the upper part of the door trims, just below the glass. Given the acres of much plusher trim farther down the door, this seems a bit odd.

The other comment we’d make is that the SUV body simply makes more sense in terms of load carrying (569 litres plays 528) and makes more of the SUV’s claim to practicality.

The Sportback is also a bit of an acquired taste and while it’s not the first SUV-coupe mash-up we’ve seen, to many eyes, the combination never looks right. Coupe on stilts? Surely, not for everyone.

On that subject of practicality, the SQ8 bucks the trend in EVs by being able to tow up to 1800kg with a braked trailer. The factory towing pack is a $2180 option.

The GLE is very easy to use because of those physical controls.

Save for the trackpad in the centre console that can be used like a laptop’s control mat - it’s a little fiddly - everything is easy to locate and adjust and the controls feel nice. The switches along the climate control row all feel nice and clicky, buttons in the centre console are big and obvious, and even the steering wheel’s haptic buttons are laid out sensibly.

The touchscreen’s software has been updated since launch during the facelift and it’s easy to navigate, but wireless Android Auto or Apple CarPlay are a good workaround.

The front seats, as well as being comfortable, are adjustable to an impressive degree for finding your driving position and there’s plenty of room and light to make the cockpit feel airy.

Storage isn’t at a premium, there’s plenty of space in door cards, the central storage bin, and the cupholders and phone charger can be hidden away.

Behind the front row, rear seat space is ample, though if you opt for seven seats the second row can be moved to accommodate a third row of passengers when needed.

In our test car, that isn’t the case, so the GLE’s cavernous 630 litres of boot storage is available. The second row can split 40/20/40, which is convenient for loading long items while four passengers are present.

Oh, but under the boot floor, despite some extra room for bits and pieces, no spare tyre. Big marks down for a car that absolutely has the space for one.

It’s not a strong start for the GLE. Our top-spec (non-AMG) GLE 450d 4Matic variant starts from $154,900, before on-road costs, while our test car has $3800 of option boxes ticked.

So, $158,700 before on-roads as-tested, the GLE is this borderline prohibitively expensive for what it offers.

If the car you’re after must be diesel, the options are still many in terms of rivals… especially if you’d like to save a few dollars.

Moving on from the big Mazdas and VW Touaregs to the proper premium badges, and there’s the $136,815 Audi Q7 50 TDI (if we exclude the $120,530 base Q7 TDI) or the BMW X5 30d for $138,600. Even a Range Rover Sport D300 comes in under the GLE at $159,481.

For a seven-ish year old luxury SUV, the GLE does a decent job of hiding its age in some ways, but there are gaps.

The twin 12.3-inch screens for multimedia and driver display have aged well, plus there’s electrically adjustable leather front seats with heating, though the leather in our new test car needs some softening up. Perhaps over time.

The new steering wheel comes thanks to newer models in Merc’s line-up, though haptic controls can be accidentally bumped (as opposed to buttons).

Wireless phone charging, wireless Android Auto and Apple CarPlay, a head-up display, a huge sunroof, LED interior lighting, adaptive high beam headlights, a power tailgate and surround-view parking cameras are all standard.

Optionally, there’s a set of 21-inch wheels as pictured on our test car. They’re $2400 and you’d probably be better off with standard 20-inch wheels for the extra comfort.

The illuminated running boards are a $1400 option, and they’re also probably not necessary. But I’m not your mum, go for it if you want.

Oh, and you can also have the GLE in seven-seat form, but our test car is a luxuriously spacious five-seater.

While many electric all-wheel-drive vehicles use a motor on each axle, the Audi electric 'Quattro' system here arguably goes one better with a total of three motors.

The front axle features the traditional single motor while the rear axle has two; effectively a motor on each rear wheel.

When they all chime in, they bestow the e-tron with a maximum of 370kW of power and an astonishing 973Nm of torque; more than enough to get the 2.6-tonne e-tron moving.

Enough, in fact to get the car from rest to 100km/h in a claimed 4.5 seconds and on to an electronically limited top speed of 210km/h.

A single-speed reduction transmission is fitted and drive is constantly sent to all four wheels via an electric version of Audi’s famed Quattro all-wheel-drive layout.

Suspension is by adaptive air springs and there’s adjustable (via the steering wheel paddles) regenerative braking.

The GLE 450d’s 3.0-litre inline six-cylinder diesel engine is turbocharged, with a healthy 270kW and a brawny 750Nm to its name. That torque peaks all the way from 1350rpm to 2800rpm, by the way. Handy.

A nine-speed automatic transmission sends drive to all four wheels ('4Matic' in Merc-talk), while a 48-volt ‘mild-hybrid' system ('EQ Boost' in Merc-talk) means take-offs and shifts are aided by a bit of electric power.

Mercedes says the GLE can dispatch the 0-100km/h sprint in just 5.6 seconds, and that feels about right.

Moving this much weight at such velocities and for such distances requires a big battery. In fact, Audi claims the SQ8’s battery, at 114kWh is the biggest in the business.

But, again, it needs to be, especially with the claimed energy consumption of a hefty 28.8kWh per 100km for the SUV version and 28.0kWh per 100km for the slightly slipperier Sportback.

That gives a theoretical range of 417km for the SUV and 430 for the Sportback, both of which are numbers some potential buyers won’t consider sufficient.

But those same people should consider the fact that in a mix of winding country roads and some freeway running, we were able to beat those consumption claims, recording closer to 26 or 27kWh per 100km which, if nothing else, suggests the published range figures might be somewhat closer to reality than the EV (or any other segment of the car industry) market typically gets.

The standard charger runs at 11kW but on a 10-amp household socket, home charging will be limited to 7.2kW, although an optional 22kW charger ($6900) is also available from Audi.

The DC charging is the highlight, however, and the SQ8 can cope with charging speeds of up to 170kWh, meaning it can theoretically get from 10 per cent to 80 per cent charged in about 31 minutes on a commercial charging station with enough grunt.

Mercedes claims a 7.4L/100km combined cycle (urban/extra-urban) fuel consumption figure for the big lug, but achieving that and making the most of its large 85-litre tank is a challenge.

We averaged 8.7L/100km on test but the trip computer showed as low as 8.0L/100km at one point. Get the GLE on the highway and fuel use plummets.

Theoretically you should be able to get about 1150km from a single tank, but realistically we wouldn’t plan trips any longer than 900km between fuel stations. 

Still impressive, given that’s about the distance between Melbourne and Sydney, or Sydney and Brisbane. Roughly.

Almost a thousand Newton-metres (not to mention 370kW) infers some pretty serious performance and so it is.

When you press down on the throttle pedal, there’s an instant and somewhat furious response from the driveline. And just as the Audi’s touchscreens have been calibrated to respond on a human scale, so too have the major driving controls.

That said, while there’s more acceleration on tap than most drivers will ever have experienced, the SQ8 doesn’t move forward with quite the irresistible force the bald numbers might suggest.

And that’s purely down to the thing weighing the wrong side of 2.6 tonnes. Sure, Audi claims 4.5 seconds and that seems fairly believable, but it’s not quite as ballistic as some other current EVs.

Still, that’s hardly its mission in life, anyway. Top speed, in the interests of thermal management, has been limited to an entirely understandable – not to mention adequate - 210km/h.

But one thing all that kerb mass has (arguably) done is make the suspension work properly. Speaking purely personally, until I’d sampled the SQ8 over a variety of bitumen joins, potholes of all sizes and even clattering level-crossings, I was yet to drive a passenger car on air suspension that worked as well as the brochure claimed.

Historically, air suspension has been okay on smooth roads and even sometimes bigger lumps and bumps. But it usually fell short of expectations on small amplitude, high frequency stuff that made the suspension judder and stutter. Not this Audi.

Even on the 'Dynamic' setting, the ride never falls beyond plush although you will notice a little more stiffness being dialled into it by the computer.

The best advice is to leave it in the 'Comfort' setting where there’s still lots of roll and pitch control, yet an even higher degree of suppleness that fundamentally refuses to be beaten by a lack of post-Covid road maintenance. And this from a car that rides on 22-inch wheels and tyres.

Perhaps compressed air doesn’t scale in a linear manner, making the addition of a couple of tonnes of sprung mass a positive, rather than a negative.

The other thing Audi has done well to maintain is that almost indefinable corporate steering response.

It’s kind of muted this time around in terms of its ability to talk to you, but there’s still an over-arching Audi-ness to it with an instant pointiness without the frenetic feel often associated with a quick ratio and sticky tyres.

A trip in the GLE feels like a welcome step back in time. Sure, coming in close to five metres long and two-and-a-half tonnes means it’s not a nimble steer, but the GLE strikes a nice balance of comfort and tactility that’s getting rarer.

None of it feels particularly sharp in terms of inputs or feedback, but it’s easy and predictable to a point where even winding back-roads are effortless to flow through.

The big diesel engine feels almost lazy, but it’s just so effortless in getting things moving as it strives to sit close to idle whenever possible. Because of that, there’s little noise from the engine bay even under reasonable acceleration, and the powertrain is helped by that 48-volt system which makes stop-starts from the lights super-smooth.

The mild-hybrid also helps smooth out power delivery, to the point where the only time the GLE feels clunky is the occasional lag when shifting from Drive to Reverse or vice versa.

The test car’s suspension isn’t the optional airbag set-up, but the non-adaptive steel does fine in terms of comfort and soaking up harsh surfaces. And even the big 21-inch wheels aren’t too bad over sharp bumps.

With smaller wheels (more tyre cushioning) and the air suspension, it feels like the GLE would ride gorgeously.

Its body control is predictable on smooth roads, and if you’re careful you steer the hefty SUV through tight, winding roads easily, but consistently rough surfaces can make the GLE feel unsettled for a short period of time.

There’s an overall softness to it that means gentle off-roading is possible, and the tyres are thick enough to make it comfortable. You won’t find yourself being tossed around on a flat enough gravel road.

There’s a lot under the skin in the GLE in terms of safety, and it doesn’t always make itself known. This is a compliment.

The GLE scored a maximum five stars in its ANCAP assessment in 2019, and though the criteria has changed significantly since then, it feels like it should still score well.

The GLE doesn’t intervene unless it needs to, but the ability is there for the big Merc to avoid incidents and employ many means to protect passengers and pedestrians alike.

A warning for the driver and a gentle seatbelt tension comes in before the car slams on the brakes, though if no action is taken before an expected collision the GLE will drop its AEB anchors.

There are nine airbags if it all goes pear-shaped, plus some well-tuned adaptive cruise control with lane keep assist and departure alert, there’s traffic sign recognition with that, too.

Blind spot warnings, front- and rear cross-traffic alert, front and rear parking sensors and driver monitoring are joined by Mercedes’ plethora of other little safety features that minimise impact and damage in a crash.

Audi’s factory warranty is a good, but no longer remarkable five-year/unlimited warranty on most of the SQ8.

The exception is the battery which is covered by a six-year/160,000km warranty. Audi will also come to your home and connect the standard 10-amp charger and there’s an Origin Energy green power offer that comes with it.

Charging is taken care of for the first six years with a Chargefox subscription as well as Audi Connect. You’ll also get six years of free roadside assistance and the first six years of standard servicing are also included.

The SQ8 also makes good on the EV promise of less maintenance with service intervals every two years or 30,000km, whichever comes first.

Servicing isn’t cheap at Mercedes, even in the context of this market segment. A three-year service plan for the GLE costs $4045, while five years is $8055. That’s $1348 or $1611 per service respectively. The later services in those five years will of course be much more expensive and bring the average up.

Intervals are every 12 months or 25,000km, but Mercedes’ five-year/unlimited-kilometre warranty means anything major that goes wrong in that time should be covered - always read the fine print.

The brand’s Australian website lists 67 Mercedes-Benz dealers that can service your car.