Mercedes-Benz G580 vs Audi Q8 E-Tron

What's the difference?

As per the 1979 original, the current G-Class is produced by Magna Steyr in Arnie’s home town of Graz in Austria. And many fundamental things haven’t changed since then. But clearly this EV monster’s exotic electric powertrain is a huge departure.

It retains impressive off-road ability and straight-line speed. But will it hit the mark with top-end luxury 4WDers? Short story, this thing is wild, and it will be irresistible for a likely narrow band of tech-focused ‘must have the latest and greatest’ buyers. Nothing like impressing friends and family with a tank turn.

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

The Audi Q8 e-tron ushers in welcome improvements to an already likeable and capable large luxury SUV.

But it is also feeling dated compared to newer and fresher rivals like the BMW iX, isn’t as good to drive as the best, offers disappointing range for the size of the new battery, and prices are creeping up for what is essentially a half-decade-old EV.

The name change isn’t enough. What the Q8 e-tron really needs is a massive leap in its Vorsprung durch Technik in a rapidly evolving electrified landscape.

 Very good… but far from great.

Okay, so Mercedes-Benz says, with a straight face, that “with the aim of optimising the vehicle’s aerodynamics” classic G-Class elements have been revised, including the reprofiled bonnet, ‘air curtain’ vents in the flares over the rear wheel arches, A-pillar cladding and the small spoiler on the edge of the roof.

At the same time, the 20-inch wheels are also claimed to be "aerodynamically optimised” and underneath, a 26mm underbody casing made from a mix of materials, including carbon-fibre (attached to the ladder frame with more than 50 steel screws), protects the battery from dust, dirt and rocks.

In ticking off the Edition One, car-spotters should look for black rims with blue brake callipers behind them, blue inserts in the exterior protective strips as well as black door handles and a new rectangular design box on the rear door for storing items such as charging cables, tools or snow chains. If you want a spare wheel, choose the standard model.

An optional black-panel radiator grille ($3800) features tinted lighting units as well as an animated LED light band and chrome surround. The light band can be activated as a running light or an animation when locking and unlocking the vehicle.

And it’s worth noting Mercedes-Benz and the car’s contracted manufacturer, Magna Steyr, have invested much time and many Euros in retaining the car’s classic handle and door lock design. G-Wagen owners will recognise its sound from several kilometres away.

Inside the G580 it’s clear this is one area where the G-Class has progressed enormously over the decades. It’s still quite upright in terms of the dash design, but you’re confronted by twin 12.3-inch screens, supporting the Mercedes-Benz user interface. 

All very high-tech, but that’s balanced by an old-school grab-handle for the front passenger to latch onto during off-road work. 

The signature turbine-style air vents are located within squared-off panels, and in the limited Edition One you have a blue fleck running through carbon-fibre inserts on the centre console, door cards and that front grab handle. In the standard car it’s a (very attractive) walnut open-pore wood rather than carbon.

A luxurious interior for sure.

The Q8 e-tron looks smaller than it actually is, with the SUV wagon’s length/width/height/wheelbase numbers measuring in at 4915/1937/1633mm/2928mm, respectively.

The Sportback version is slightly lower at 1619mm.

You’ll need a keen eye to spot the difference between the old e-tron and new Q8 e-tron, with almost all of the visual changes reserved for the front end.

For starters, there’s a new, two-dimensional four-ring logo that looks larger and flatter than before, sitting within a sleeker and slimmer grille treatment that now takes in the restyled headlights. Along with the redesigned bumper, the effect serves to broaden the SUV’s stance.

The effect also suggests improved aerodynamics, aided by small air foils near the wheel arches and a fully-clad underbody section.  

Otherwise, aside from the odd inclusion of the make-model name on the B-pillar and minor trim updates out back, the Q8 e-tron keeps the same, contemporary appearance of its predecessor. Which is no bad thing. 

And there are even fewer changes inside.

For the record, the G63 is just over 4.6m long and a little more than 1.9m wide with a 2890mm wheelbase. So, not huge, but its close to 2.0m height is hard to ignore. 

In the front there’s lots of breathing space, and in terms of storage you have generous bins in the doors with plenty of room for big bottles. Then there’s a centre armrest, which doubles as the top of a deep storage box housing a USB-C port inside. 

A sliding roller cover in the centre console reveals two cupholders, another two USB-C sockets, a 12-volt outlet and a wireless charging pad. Add in a big glove box and you’ve got plenty of options in terms of storage, power and connectivity. 

In the back, sitting behind the driver’s seat set for my 183cm position I’ve got tons of foot and legroom and, no surprise, lots of headroom.

There’s a fair bit of sculpting in the rear seat, which is as nice as it is unusual (makers often avoid bolsters on the rear seat as it makes the backrest harder to fold flat). And in terms of three-abreast accommodation, a smaller adult will be okay in the centre spot for shorter journeys. Three up to mid-teenage kids will be swimming in it.

Then, for practicality you again have generous bins in the doors. And if you need even more capacity, fold down the centre armrest which houses two different size cupholders. 

In the rear of the centre console you’ve got two USB-Cs, a 12-volt power outlet, individual climate control and directional vents.

There are map rockets on the front seatbacks and more air vents in the B-pillar. So, when it comes to comfort, powering up devices and storing ‘things’ you’re well taken care of.

The side-opening tailgate door opens from right to left, which isn’t ideal when parallel parked on the left hand side of the road, but boot volume is over 600 litres (VDA) with all seats upright, expanding to nearly 2000 litres with the 60/40 split-folding rear seat lowered.

There are multiple tie-down hooks, a netted pocket, two lights, a 12-volt outlet as well as a ‘ski-port’ door and sliding cargo cover to enhance practicality and security.

As mentioned earlier, the full-size spare in the standard model, but the Design Box replaces it on the Edition One, although Mercedes-Benz says it’s aiming to make a spare available as an option later in the year.

More than merely good enough.

Entry and egress are easy thanks to a lofty ride height and wide-opening doors. Once sat, you’ll discover Audi has not changed anything much inside compared to the old e-tron. Frankly, very little needed to.

You’ll still find a strikingly stylish and upmarket cabin offering sufficient space for five people, a commanding driving position, superbly supportive front seats that are a boon when long-distance driving, plenty of storage options, ample ventilation and suitably moody lighting.

While not the most modern dash on the market when contrasted to the vast ‘hyper’ screens of some rivals, the Q8 e-tron’s remains very architectural in appearance and presentation.

Trim and material quality are certainly up to brand expectations. Practicality remains a priority, with lots of storage areas within the dash, console and door cards.

There are no fewer than three screens – a 12.3-inch digital instrument cluster Audi calls 'Virtual Cockpit', a 10.1-inch central multimedia display with haptic feedback and an 8.6-inch unit for climate control.

While they may seem daunting at first, a little familiarisation means most users will find them easy to operate.

Kudos, too, to the super-clear markings in the instrumentation, as well as the very satisfying tactile sensations of using the quality switchgear and controls. Typical Audi thoroughness here.

The same applies to the Q8 e-tron’s roomy and pleasantly-presented back seat area, with intelligently designed seating offering a nicely angled backrest as well as supportive cushion.

Three people can fit across without too much pain, though two is better, as the folding centre armrest and other amenities like air vents and climate control systems can be better-accessed and enjoyed.

You can see, smell and feel where your money’s gone inside. This is a quiet, isolated and cocooning experience, whether cruising on the motorway or stuck in heavy urban traffic. As you’d expect from a luxury SUV.

About the only real jarring aspect are the $3500 virtual exterior mirrors, created to improve aero performance. Their door-mounted screens are set low, outside the natural visual eyeline of the driver, creating confusion and adding precious extra seconds of eyes not on the road ahead. They’re irritating to the point of frustration.

Otherwise, the Q8 e-tron gets the job done inside, with cargo capacity at a reasonable 569 litres in the SUV wagon and 528L in the Sportback. And there’s even a 62L tub in the frunk up front to store the cables that also come standard with the EV.

Audi interior and packaging expertise strikes again.

First thing’s first. The Q8 e-tron has very little in common with the existing Q8 petrol, diesel and SQ8 high-performance models.

These, along with the larger Q7, have internal combustion engines.

However, keep in mind all leverage variations of the same 'MLB Evo' architecture that first saw the light of day all the way back in 2015. So, no spring chickens here.

But as it currently also serves Bentley, Lamborghini and Porsche SUVs, we’re talking about a classy set of components, anyway. Plus, the pre-facelift model was only rolled out on the world market in 2019.

For now, only a single variant is here, known as the Q8 e-tron 55, meaning the previous, smaller-battery 50 and flagship SQ8 aren’t here yet. That will happen sometime during 2024.

As before, there’s the choice of a traditional SUV wagon or more-popular BMW X6-style Sportback SUV coupe.

Prices start at $153,900 (all prices are before on-road costs) for the former and $165,900 for the latter, and that’s a jump of nearly $8K and $9K respectively over their old e-tron-as-a-noun-rather-than-an-adjective predecessors.

At least the Q8 e-tron is well equipped.

On the safety front, you’ll find about 40 driver assistance systems, backed up by a plethora of cameras, radar sensors and ultrasonic sensors to help keep the SUV as secure as possible.

These include a 360-degree camera system, adaptive cruise control, lane-support systems, rear cross-traffic assist and Autonomous Emergency Braking (AEB).

More on safety further down below.

All models also include adaptive air suspension with a variable ride height range of 76mm, a drive-mode selector that switches between normal and sport settings, LED headlights with auto high beams, keyless entry/start, front and rear climate control, heated and powered front seats and adjustable regenerative braking paddles on the steering wheel.

There's also a head-up display, three digital screens including electronic instrumentation and a central touchscreen with haptic feedback, satellite navigation, Android Auto, wireless Apple CarPlay, digital radio, wireless smartphone charging, four USB-C ports, an electric tailgate with gesture control, roof rails and 20-inch alloy wheels – with a space-saver spare wheel to boot.

Plus, an undisclosed number of Launch Edition SUVs from $165,900 are also available, adding Audi’s S line exterior styling touches, 21-inch wheels, sports front seats, a racier steering wheel, electric steering column adjustment and more.

Note that the base Q8 e-tron 55 does not include leather upholstery (it’s synthetic material instead) or a sunroof as standard.

Pricing and spec, then, are generally in-line with the luxury Euro EV SUV competition, which is to say, a bit on the exxy side.

Let’s check out the changes.

The G580 is powered by four permanently excited synchronous motors, each delivering around a CLA200’s worth of power and torque to each wheel for overall outputs in excess of 432kW/1164Nm.

Each motor has its own two-stage transmission and power electronics for almost infinite fine-tuning of the direction and amount of drive sent to individual wheels. Merc calls it ‘individual-wheel drive’.

Tech-overload alert. As per its predecessor, the Q8 e-tron 55 continues with two electric motors – one on each axle – for ‘quattro’ all-wheel drive.

Upgraded internals are said to improve efficiency substantially. Both are induction/asynchronous motors, mated to a single-gear two-stage ratio planetary transmission.

In the 55 model, the dual-motor set-up delivers a combined 300kW of power and 664Nm of torque, for a healthy 0-100km/h sprint-time of 5.6 seconds, on the way to a 200km/h top speed.

That’s impressive, given the lightest Q8 e-tron 55 tips the scales from 2595kg. That said, the Audi’s power-to-weight ratio is an equally strong 116kg/tonne.

Other updates include more direct steering, stiffer front suspension and retuned chassis controls.

Suspension is a five-link arrangement all-around, with adaptive air suspension featuring an electronically controlled with continuously variable adaptive damping system.

Housed in a torsion-resistant casing and embedded low down in its ladder-frame chassis, the G580’s 116kWh two-tier, liquid-cooled lithium-ion battery pack delivers a WLTP-rated range of 473km, or 567km on the more lenient NEDC scale.

‘Eco Assistant’ and ‘Range Monitoring’ functions provide continuous information on battery status, energy consumption and estimated range.

Maximum system capacity is 400 volts which enables 200kW DC charging, meaning a 10 to 80 per cent fill in as little as 32 minutes. Maximum AC charging capacity is 11kW.

Claimed energy use is 23.1kWh/100km, and we saw an average of 28.6kWh across urban and highway running on the launch drive program.

Not exactly a ‘green’ EV choice, then, but it’s worth noting a one-year Chargefox subscription is included to off-set the car’s energy appetite.

The good news is that the lithium-ion battery pack size rises from 95kWh to 114kWh, and is accompanied by faster DC charging capability, due to a jump from 150kW to 170kW.

While far from the class best, this cuts down charging times by a considerable margin.

The claimed driving range is 454km, while average consumption is a disappointing 25.6kWh/100km. The Q8 e-tron’s trip computer during our run in it recorded a mid-to-high 20s readout, by the way.

So, with 432kW and around 1160Nm, even though the G580 weighs in at around three tonnes, you’re talking 0-100 km/h in 4.7 seconds. And this car gets up and goes… like a beast.

What you don’t get is that traditional Merc-AMG G63 V8 rumble, because, of course, no engine. 

But you do get what Mercedes calls ‘G-Roar’, essentially a sound bar at the front of the car also using the audio system inside to give it what is not exactly an engine noise but some sense of the car progressing. And you can turn it off for completely silent running.

‘Electric Dynamic Select’ changes the parameters of the motors, transmission, suspension, ESP and steering as required. On-road that means ‘Comfort’, ‘Sport’ and ‘Individual’ modes, with off-road comprising ‘Trail’ and ‘Rock’. In the Comfort setting drive flows primarily to one axle for optimum energy efficiency.

Suspension is by double wishbones at the front and a De Dion-style live (rigid) axle at the rear. You’ve got the same adaptive-type set-up as per other G-Class models, so ‘Comfort’ and ‘Sport’ modes and of the many traditional G-Class traits this car exhibits, ride quality is one of them.

Even in Comfort you’ll find even little bumps and thumps making their way up into the seat of the pants and the cabin. It is after all a body-on-frame, ladder-chassis type vehicle and that’s not unusual.  

In terms of steering, it’s accurate and road feel is good. You’ve got 275-wide Falken Azenis FK520 tyres that are more on- than off-road focused. The car feels stable and nicely planted on the road.

The physical brakes are by ventilated discs front and rear, and the big rotors are the same size (353mm) all around. They work nicely and feel like a conventional set-up.

Regenerative braking kicks in as soon as you lift off the accelerator pedal. The powertrain is harvesting energy as the car decelerates and there are four levels you can adjust with the steering wheel paddles up to a quite aggressive level - not quite, but close to a single-pedal set-up.

Off-road, the G580’s ‘G-Steering’ system allows the wheels to turn at different speeds to induce slight ‘drift-like’ oversteer and tighten the turning circle. It works beautifully and the car’s fording depth is 850mm, a full 150mm more than internal-combustion G-Class models.

A three-speed off-road crawl function is adjustable to speeds as low as 2.0km/h, and the car is claimed to remain stable on sideways slopes up to 35 degrees. 

Torque vectoring is used to create ‘virtual diff locks’ and there’s a ‘low-range’ setting. Switch to the ‘Offroad Cockpit’ and data including gradient, lateral inclination, compass readings, tyre pressures and the selected G-Mode appear.

A ‘Transparent Bonnet’ function creates a virtual view of what’s approaching and passing under the front wheels to help the driver pick their way through steep ascents or declines.

For the record, the G580’s approach angle is 32 degrees, departure is 30.7, breakover is 20.3 and ground-clearance is 250mm.

And of course, with the wheels independently powered, the G580’s signature move is what Mercedes-Benz calls a ‘G-Turn’ but the rest of the world calls a tank turn.

If you encounter an obstacle that makes forward progress impossible, the system spins the left- and right-hand wheels in opposite directions so this brute can turn on the spot like an M1 Abrams. You can’t help but crack up laughing when executing this extreme party trick!

In terms of miscellaneous observations around ergonomics and the car in general, it has a 13.6-metre conventional turning circle. So if you’re not using the G Turn function in the car park be ready for a sizeable turning arc.

Also, those aero tweaks here and there seem to have had an effect. Wind noise, especially for such an upright, squared-off design is surprisingly modest. And overall, from a build point of view, this car feels as though it’s been carved from a solid piece of metal. In every aspect it presents as a quality item.

For decades, Audi used the advertising tagline ‘Vorsprung durch Technik’ – which means Progress through Technology in its native German – to highlight how advanced its vehicles are.

So, how has the Q8 e-tron advanced over its predecessor?

Right from the get-go, there’s so much to dig about the electric Audi SUV, especially if you’re new to luxury EVs.

To start with, it’s as quiet as you’d expect, even by luxury brand standards. As the Audi accelerates, the sense of momentum is somewhat masked by how refined and civilised your progress is.

Watch that, though. You could get a speeding fine more easily than you expect!

Anyway, with 664Nm of torque coming on instantly, there’s certainly no shortage of it, backed up by enough muscle for effortless and instantaneous overtaking. This sort of motoring can become highly addictive.

Similarly, a low centre of gravity, combined with a beautifully modulated electric power steering and the quattro AWD set-up, provides pleasing agility combined with reassuring roadholding. Even when you’re pressing on, the Q8 e-tron corners and grip with confidence and control.

So far, so good. Especially considering the air suspension is further cushioning your sense of speed, with excellent bump absorption for an isolated ride.

That’s on the standard 20-inch alloys spec. Riding on the larger wheels, there is a bit more firmness, as well as some road-noise intrusion.

Plus, it doesn’t take long to realise the Q8 e-tron is a very heavy vehicle. Though undeniably quick and athletic, changing directions in a hurry means that the SUV can feel a bit unwieldy.

Throttle response at higher velocities can seem a little muted and, over certain crests and humps when travelling fast, there is a sense that the driver really needs to have their wits about them.

Best to take it a bit easier, then, and enjoy the serenity the Audi EV SUV delivers in more typical and restrained travelling scenarios.

There is so much that the Q8 e-tron brings, and driving it normally really does reveal a sophisticated, comfortable, dependable and high-quality grand-touring experience.

Push a bit harder, though, and some cracks show up.

Tested way back in 2019 but updated in September, 2023, the e-tron/Q8 e-tron range scored a maximum five-star ANCAP crash-test rating.

There is no shortage of safety equipment – with passive and active, driver-assist-heavy technologies designed to avoid an accident, with full surround-view cameras also providing an extra level of security.

Standard kit includes Audi’s 'Pre-Sense front' and 'Pre-Sense rear', offering AEB, cross-traffic alert and active lane-keep assistance tech, as well as adaptive cruise control with full stop/go, eight airbags (dual front as well as side and curtain airbags for all outboard occupants), hill-descent control, anti-lock brakes, electronic brake-force distribution, brake-assist, electronic stability control, traction control and tyre pressure monitors.

The AEB system can detect pedestrians and cyclists between 10km/h and 85km/h, and even at night, while for other motor vehicles that increases to 250km/h (an upper velocity more relevant for the coming SQ8 e-tron). The active lane warning operations is from 65-250km/h.

Both outboard rear seats feature ISOFIX child-seat latches, along with three top tethers for straps.

The G580 is covered by Mercedes-Benz Australia’s five-year/unlimited-km warranty, which remains the standard offering in the premium part of the market and an eight-year/160,000km drive battery warranty.

Service intervals are every 12 months or 20,000km with service plan pricing available over three ($2645), four ($3980) and five ($4670) years. In approximate terms, each workshop visit will cost ‘around’ $900. Not exactly cheap, especially for an EV, but this is no ordinary electric vehicle.

Audi provides a five-year/unlimited kilometre warranty as well as six-years’ worth of free roadside assistance, which is nothing unusual these days, while the battery warranty is eight years or 160,000km.

The first six years of scheduled servicing is free, too. Intervals are every two years/30,000km (whichever comes first).

Plus, owners also receive six years of complimentary access to Chargefox’s network.