Mercedes-Benz E300 vs Audi Sq6 E-Tron

What's the difference?

The E-Class is stacked with kit, looks great, and is an effective and comfortable way to get around in built-up areas or across the countryside.

While it’s not the most dynamically engaging - it’s pipped by its Bavarian rival there - it offers more comfort-oriented features than most, and the cabin is a pleasant place to spend a day driving.

If you're disposed towards stumping up the asking price, the extra outlay for the 'Plus Package' will probably be most relevant to you if you’re covering long distances due to the Airmatic suspension.

Otherwise, even a simple-spec E300 provides a step up from what you might expect from an executive sedan.

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

When it comes to a performance electric SUV, the Audi SQ6 e-tron is a fine example and showcases a masterclass in design. It drives and handles beautifully, even if it’s not as fun as I expected.

The technology looks amazing and I'm sure the little bumps we experienced will be ironed out with a software update.

The SQ6 will suit a smaller family best but the decent driving range and fast charging capabilities means regional families might like it too.

Evolution rather than revolution is obvious when it comes to the E-Class’ styling, but that’s in Mercedes’ best interests, because it’s still a good-looking thing, and being a bit subtle is warranted in the executive sedan game.

The biggest changes come in the headlights and tail-lights. Up-front there are now more than one million pixels in the LED headlights, which have adaptive high beam as standard and are more connected to the grille via black trim, as has been seen in EQ electric models.

Underneath, the bumper now features an AMG-style 'A-wing' apron as part of the 'AMG Line' exterior package as standard. A set of 20-inch AMG alloys are also included.

To the rear, and the digital tail-lights feature a Mercedes-Benz star motif, making its lighting signature now more recognisable from behind.

The German Rainbow is well-represented with mostly shades of grey, black, or white available, though 'Verde Silver Metallic' is a slightly retro green, and 'Nautic Blue Metallic' is a subtle and classy tone.

The daring ‘Manufaktur’ shade of 'Patagonia Red Metallic' is a $2500 option, as is 'Opalite White Bright' while 'Alpine Grey Solid' is $2900.

The SQ6 has a distinct look compared to the other mid-size SUVs in Audi’s stable with panelling that lacks some of the severe pleating of its cousins, instead incorporating swoopy lines and a more pronounced moulding around the base of the car.

The sporty S styling is seen in the large 21-inch alloy wheels and red calipers but the customisable light designs inside and out really make this stand out.

The interior is sumptuously styled with Nappa leather and suede upholstery and trims, and sports front seats, while the use of displays in the dashboard makes the SQ6 feel like a spaceship.

However, the main panel curves towards the driver and it still feels accessible and intimate for a cockpit. The cabin looks as expensive as what you’d want it to look like at this price point.

Inside, the E-Class should feel familiar to anyone who’s spent time in a recent Benz, though the Superscreen might be the main point of difference. It’s an immediately comfortable place, though, with a relatively visually busy cabin.

The seats and their adjustability mean most drivers and passengers, regardless of height and size, should feel supported (and ideally relaxed), while touch-points are mostly either leather upholstery or digital screens.

The steering wheel, also seen in plenty of other Mercedes models, is a bit of a let-down, however, with its haptic touch pads on a slightly busy two-tier layout. This millennial found it irritating, surely too will the usually older E-Class buyer.

There are a few other small annoyances, one being that the MBUX Assistant sometimes won’t hear a command, or that not everything seems to be able to be controlled by it. The climate control vent positions are electrically adjustable to certain pre-sets through the menu, but the MBUX Assistant isn’t able to do this for you.

And while the driver display and central multimedia screen are fairly user-friendly, it’s not always immediately apparent what the quickest way to find some information or a setting is.

Our test car was fitted with the 'Plus Package', which means four-zone climate control available to the rear seats, which my 180cm-tall self found spacious with plenty of headroom, kneeroom, and even a fair bit of room under the driver’s seat.

Behind the rear seats, there’s a generous 540 litres of boot space, exactly the same capacity as the previous generation E-Class.

The cabin's primary objective seems to be one of passenger comfort. Everything you touch feels soft under hand and while seat padding is on the firmer side, all but the rear middle seat is comfy on a longer journey because of their extra functions.

The rear-row back rest has two recline positions and the seat beds offer long under-thigh support. The middle seat bulges up, and coupled with the compromised legroom, it won't be a nice seat for an adult.

The front row offers the best legroom and there is enough space in the rear for my six foot three brother to squeeze into (somehow) but I wouldn't want to be in the rear for a longer journey if you're super tall.

Access is good for each row with wide door apertures and seats that aren't positioned too high. There will be no groans getting in and out of the SQ6.

Up front the glovebox and middle console shoulder most of the storage burden but there is a handy flip-down drawer at the driver's knee for a wallet and a centre console with the charging stuff but it is an awkward space that could have been better utilised. Things tend to move around in there if not secured.

In the rear there are a couple of net map pockets, storage bins and a total of four drink holders but that's about it. The other amenities back there soften the lack of storage options as you get directional air vents, climate control, heated outboard seats and a couple of USB-C ports.

The technology on a whole looks amazing and the touchscreen multimedia display is responsive and logically laid out. You'll be able to figure it out quickly and I like that important functions, like climate control, and shortcuts are pinned to the screen as it makes it easier to access them when on the go. The Audi voice assistant can be activated by 'Hey Audi' if you don't want to fiddle with screens on the road.

The wireless Apple CarPlay was simple to set up but at the beginning of the week it did tend to get booted whenever the climate or massage functions were activated. This was annoying as you'd have to reselect CarPlay and jump back into whatever app you were in and when you're using the Map app, it feels disjointed. However, this sorted itself out by the end of my week.

On the whole, all the screens and their functions are user friendly but there were a couple of gremlins that needed a car restart to fix. Randomly, my volume became useless and the touchpad/buttons on the steering wheel stopped working.

I do like a normal button over touchpad controls as I find them more responsive but the touchpad controls on the driver's door were really easy to use and I like the family-friendly option of being able to individually apply the child-lock to the rear doors.

Rounding out the cabin is the large 526L boot which offers a level loading space and the ability to adjust the height via the adaptive S air-suspension from buttons in the rear.

The rear row has a 40/20/40 split, which opens up storage options again and there is a deep under-floor storage pocket that houses the tyre repair kit. A handsfree-powered tailgate comes standard, which I always appreciate and the massive frunk (64L) takes care of all of the cable storage.

The launch of the flagship SQ6 e-tron brings the Q6 line up to three before a high-performance RS hits our shores sometime in the future. However, this new variant is priced at $151,400 before on-road costs and that's a hike of $28,900 over the mid-spec Q6 e-tron quattro.

Is it worth the jump? Mostly because this model has almost every feature that is found as an at-cost extra or pack for the other variants but it does miss out on a ventilation function for the front seats and at this stage Audi is saying it's not available to add, which is odd for a top model grade.

With the motor outputs and performance tweaks, the SQ6 competes in the world of the Porsche Macan 4S as they are mechanically related but you can pick up the 4S for $149,300 MSRP and the SQ6 can't match it's torque output of 820Nm.

The most exciting thing about the Q6 range in general is the technology and the SQ6 is no different. The dashboard is a visual feast for the eyes with a 14.5-inch multimedia display, an 11.9-inch digital instrument cluster, and a 10.9-inch touchscreen for the front passenger.

There is wired/wireless Apple CarPlay and Android Auto, built-in satellite navigation and because the system is run by Android Automotive there are a whole bunch of downloadable apps like Spotify, YouTube and Amazon Alexa voice assistant on top of the connected Audi App. These apps are accessible from the passenger display, which means they can scroll the news or watch a video on a longer trip.

There is also the upgraded 3D Bang & Olufsen surround sound system, a colour augmented reality head-up display (the screen is basically a dynamic 3D setup) and three-zone climate control.

Charging is taken care of with four USB-C ports (2/2), a 12-volt socket that moonlights as an actual cigarette lighter (complete with an nearby ashtray) and a wireless charging pad with its own 'arm' that secures your phone.

The LED lights at the rear can be customised with different light signatures which are downright cool and the front LED lights also have animated individual pixels that do a little light show when you turn on the car (to the delight of my child).

Other highlights include front sports seats with heat and massage functions, wine-red Nappa leather upholstery and black suede trims, a heated steering wheel, panoramic sunroof, heated rear outboard seats, and a handsfree powered tailgate.

Audi also includes three charging cables and a one-year subscription for Chargefox public charging stations for free, as well as installing an at-home 7kW charger, which is a nice way of making a new owner feel valued.

This lone E-Class variant is powered by a turbocharged 2.0-litre engine pumping out 190kW and 400Nm, assisted by a 48-volt battery system. Under EQ boost, an extra 17kW and 205Nm is available for a short time.

It’s hooked up to a nine-speed auto that drives the rear wheels, and it’s all pretty traditional… for 2024, that is.

Mercedes says the E300 is able to hit 100km/h in a respectable 6.3 seconds.

The SQ6 is a fully electric all-wheel drive and has two motors, one located on each axle. Together they produce up to 380kW of power and 580Nm of torque, which means this can do a 0-100km/h sprint in just 4.3 seconds when the launch control is activated.

There are three regenerative braking levels and a one-pedal mode which can be selected by sliding the gear-selector into 'B' otherwise the other two modes can be selected via the paddles on the steering wheel. You'll get the best efficiency when B is selected but it does take a beat to get used to and if you time your stops right, it can function as a proper one-pedal action.

Mercedes claims the E-Class drinks 7.2L/100km on the combined cycle, and though we weren’t able to test that properly at the pump on the launch program, the trip computer showed up to 9.4L/100km after some quite spirited driving, which gradually averaged out to about 8.6L/100km in the afternoon once some more calm, E-Class-appropriate distance had been covered.

With its 50L fuel tank, the E-Class should theoretically be able to cover 694km on a single tank if the 7.2L/100km is achieved, though realistically it would be much less, 550-600km depending on driving style.

The SQ6 has a lithium-ion battery with a large 100kW capacity and can accept up to 270kW on DC power, which is excellent. There are two Type 2 charging ports (on either side of the car) and one has a CCS enhancement which means you can charge this from 10 to 80 per cent capacity in as little as 21 minutes on a 270kW ultra-rapid DC charger.

It is more common to see a 50kW DC charger though and that charge time sits closer to an hour and 20 minutes.

On a home 7.4kW charger, you'll get the same percentage after 15 hours, perfect for an overnight recharge.

With a claimed WLTP driving range of up to 568km and energy consumption between 17.5 and 18.6kWh/100km, the daily commute and odd family road trip is more than covered with this model.

My average consumption popped out at 18.1kWh based on the trip computer and that’s a good result for how hard I’ve pushed it over country roads, in the city and on the highway. 

While the E-Class has taken fairly sizeable steps in terms of its tech, it remains a fairly traditional car from behind the wheel, save for a few small changes like its mild-hybrid system and rear-wheel steering.

It’s still a petrol-powered rear-drive sedan, and it feels built more for eating up highway kilometres than it does tackling twisty turns. But that’s okay, because it will still do the latter.

Comfort is the main focus, clearly, for the E300, and the big Merc does it well. We weren’t offered a car without Airmatic air suspension on the launch, but the E-Class doesn’t seem like it would be particularly rough without it.

With it, however, large bumps and minor road annoyances only make their way into the cabin in the sense that you’re aware of them, but not bothered by them.

That slight dulling of feedback does extend to the steering wheel however, where, despite the rear-wheel steering making the car more nimble, the feedback to the driver is less encouraging of eager driving. 

While 190kW on paper doesn’t seem like enough, the E-Class makes do with its meagre engine quite well - and even though it can seem like it’s working a bit too hard at times, the E-Class’ natural state isn’t responding to a planted foot, so it’s unlikely to be a daily bother.

Engine noise, as well as wind and road noise are suitably dulled by the E300’s NVH fitout, too.

The tuning of its drive modes, in particular Comfort and Sport, seemed well-judged on our drive loop, with the option to set the 'Individual' mode to a custom configuration, most elements in Comfort while the drivetrain is set to Sport is particularly helpful when on gentle, high-speed country roads.

If you do start to approach the limits of the big sedan’s capability, it’ll let you know fairly early on. The heavy E-Class isn’t prone to sudden lurching or poor handling, and isn’t much phased by mid-corner bumps.

It’s not as dynamically engaging as some rivals, particularly the 5 Series, but it does appear to be a better provider of cross-country comfort.

Outside of the initial acceleration thrill, I have to say that the SQ6 sort of drives like a lot of the other Audi SUVs I’ve sampled. Which is fine because it’s dynamic and handles beautifully on the highway or city but it’s just not as fun as what I was hoping it would be. The power will satisfy everyone though. 

The different driving profiles and adaptive S air suspension really personalises the on-road experience when you want it and my favourite profile is Dynamic as the suspension and steering feels more performance focused, which I prefer. 

Ride comfort is up there with the best and you won’t really be bothered by the bumps in the road, even with the stiffer suspension, but road noise does creep in at higher speeds. 

The visibility all round is good despite thicker pillars but the rear visibility is narrow even before a car seat or passengers are back there. A digital rearview mirror would have been handy here. 

Just something interesting to note is that when you accelerate from a full stop, there can be a small lurch as if it’s rolled backwards or the brakes have held a tad too long. It’s so quick when it happens that it’s not annoying but it is noticeable in stop/start traffic.

The SQ6 is really simple to park and navigating small car parks feels like a dream. The dimensions are forgiving and the 360-degree camera system is top notch. 

The SQ6 is covered by a maximum five-star ANCAP safety rating from testing done in 2024, and features nine airbags which includes side chest airbags for the second row but it’s more common to see those just on the first row so it's nice to see on a family car.

There’s a host of safety equipment included but standouts are the emergency call capability, and safe exit assist which will delay your door from opening if it detects a car or cyclist which is a handy feature if you have a kid that throws open their door like mine.

Other equipment includes driver attention warning and alert, blind-spot monitoring, tyre-pressure monitoring, intelligent seatbelt warning, adaptive cruise control with stop/go function, lane departure warning, lane keeping assist, emergency lane keeping, park assist, front/rear parking sensors, 360-degree camera system, rear cross-traffic alert, and traffic sign recognition.

There is auto emergency braking (AEB) with forward collision warning, car, pedestrian, cyclist and junction turning assist which is operational from to five to 250km/h.

There are ISOFIX child seat mounts on the rear outboard seats and three top-tether anchor points but two seats will fit best. Front passenger space might get cosy when a rearward facing child seat is installed but I had no issue fitting my big booster seat this week.

The E-Class comes with Mercedes’ fairly industry standard five-year, unlimited kilometre warranty, though Mercedes-Benz Australia was unable to confirm exact servicing pricing on the launch. 

It does however list pricing for the E-Class on its website for a three-service pack at $3325, four at $4535, and five at $6800, the latter averaging out to $1360 each.

This could increase with the new generation car, and Mercedes doesn’t list estimated serving pricing for new E-Classes yet in its booking system (I checked with one of the test cars).

Servicing intervals are every 12 months or 25,000km, whichever comes first.

The SQ6 is covered by Audi’s five-year/unlimited kilometre warranty and the battery is covered by an eight-year or up to 160,000km warranty, which are all standard terms for the class.

Audi also offers six years of complimentary roadside assistance and a servicing program for six years that costs $2080, which is competitive, and servicing intervals are at every two years or 30,000km. 

Audi includes the installation of a 7.4kW AC home charger, three charging cables and a one-year Chargefox public charging subscription with this model.