Mercedes-Benz GLS-Class vs Audi SQ7

What's the difference?

The GLS63 is an intimidating beast from afar, but it rewards its occupants in almost every way. Yep, there really isn’t a box it doesn’t tick without serious compromise, such is its breadth of capability.

If there was ever a Swiss Army Knife of cars, the GLS63 is definitely a contender for the title, one that makes it very hard to wipe the smile off your face. Just make sure you can fit it in your garage first…

The Audi SQ7 TFSI is a delight to drive. You can’t fault its handling or power and drivers who want that sort of performance will not be disappointed. However, for the price point I was hoping for sweeter ongoing ownership costs and terms. It's missing a few family-orientated amenities, particularly in the middle row, but it’s big enough to accommodate a large family and all of its gear. So, I give this an 8.0/10.

My son thought the red paintwork and engine were pretty cool and he also gives it an 8.0/10. 

If the GLS63 was a Marvel superhero, it would undoubtedly be the Hulk. Simply put, it has road presence like few others. In fact, it’s frankly menacing.

Of course, the GLS is already pretty intimidating due to its sheer size and blocky design, but the GLS63’s full-fat AMG treatment takes it to another level.

Naturally, the GLS63 gets an aggressive body kit, with its purposeful bumpers, side skirts and rear spoiler serving as instant reminders of what you’re dealing with, but it’s AMG’s signature Panamericana grille insert that really hammers home the point.

Around the side, the GLS63’s 22-inch alloy wheels with staggered tyres (front: 275/50, rear: 315/45) make their presence known, positioned below the wheelarch extensions.

That said, some fun’s also had at the rear end, where the GLS63’s diffuser element integrates the foreboding sports exhaust system with quad tailpipes very neatly.

The focused Multibeam LED headlights also look the part, while the opposing LED tail-lights tie everything together outside quite nicely.

Inside, the GLS63 stands out from the GLS crowd with its sports steering wheel with Dinamica microfibre accents, and multi-contour front seats, which are covered in Nappa leather alongside the armrests, dashboard and door shoulders and inserts.

Of note, the doors bins are unfortunately of the hard plastic variety, which is very disappointing in a vehicle that costs this much. You would expect that cow hide would also been applied to them, but alas it isn’t.

The GLS63’s black headliner serves as an obligatory reminder of its sporting intent, and while it makes for a dark cabin, metallic accents are prominent throughout, while the optional trim (our test vehicle had carbon-fibre) mixes things up, alongside the ambient lighting.

And let’s not forget the GLS63 is still loaded with plenty of cutting-edge technology, including a pair of 12.3-inch displays, with one the central touchscreen and the other the digital instrument cluster.

Both are powered by Mercedes’ class-leading MBUX multimedia system and feature Apple CarPlay and Android Auto support. This set-up arguably remains the best there is today thanks to its speed and breadth of functionality and input methods.

The SQ7 has always had a certain understated glamour about it. It’s usual to see these cars in the monochromatic hues that European manufacturers seem to favour, so it can slip under the radar a little.

Not our example, in its Matador Red, a colour which accentuates the red calipers behind the 22-inch alloy wheels and makes the LED headlights pop.

The nose is pronounced with only a small ‘SQ7’ badge hinting at what’s beneath the long bonnet.

There’s quite a bit you can customise and one of the options is sporty black accents across the bodywork, as per our test car.

The interior hosts a plethora of soft touchpoints, leather trims and shiny black piano finishes to create a premium finish.

The panoramic sunroof and dark grey headliner (which is apart of that Sensory Package) further enhances the sense of luxury.

The sports seats are finished in a Valcona leather trim that’s diamond quilted but the headrests are fixed, which might not thrill taller occupants.

Overall, the SQ7 is a large SUV being 5067mm long, 1970mm wide and 1743mm high.

Those dimensions almost challenge the Kia Carnival, which is a people mover! Make sure it will fit in your garage before buying it. 

Measuring 5243mm, 2030mm wide and 1782mm tall with a 3135mm wheelbase, the GLS63 is an upper-large SUV in every sense of the term, which means it’s also very practical.

For example, cargo capacity below the load cover is decent, at 355L, but stow the 50/50 power-split-folding third row via the boot and it’s very good, at 890L, or drop the 40/20/40 power-split-folding middle bench, too, and it becomes a cavernous 2400L.

Better yet, the boot’s aperture is almost square, and its floor’s flat, while there’s no load lip to contend with, making loading bulkier items even easier. Up to four tie-down points are also on hand (depending on seating configuration) to secure loose cargo.

Under the false floor is the space-saver spare, which is to be expected, but what isn’t expected necessarily is the fact there’s also enough room there for the cargo cover when it’s not in use, which would be the case if six or more passengers are regularly onboard.

Moving into the power-sliding second row, the GLS63’s practicality is once again brought to the fore, with up to six-plus inches of legroom available behind my 184cm driving position.

There’s also two inches of headroom with the panoramic sunroof in situ, not to mention just enough toe-room. The GLS63’s small transmission tunnel and sheer width also mean three adults can be seated on the middle bench with few complaints.

Amenities-wise, the second row has map pockets on the front-seat backrest and a small fold-down cubby below the rear climate controls, with it containing two slots for smartphones and a pair of strategically placed USB-C ports.

The rear door bins can take one large bottle each, while a fold-down central armrest is also on hand, featuring a shallow tray and retractable (and flimsy) cupholders.

Alternatively, the $2800 Rear Seat Comfort Package fitted to our test vehicle subs in a tablet that can control the multimedia system, a wireless smartphone charger and a small cubby into the former, as well as a heated/cooled cupholder atop the rear of the centre console.

In the third row, it’s not quite as roomy if you’re an adult. With the middle bench in its most accommodating position, my knees still brush up against its backrest, which is to be expected given it’s primarily designed for children. I also have an inch of headroom there.

Nonetheless, getting in and out of the third row is relatively easy as the power-operated middle bench tumbles forward and provides just enough space to make entry and exit somewhat graceful.

When seated, rear occupants are treated to two USB-C ports and one small cupholder each, so they’re arguably taken better care of than those in the middle.

Child seats are well and truly accommodated, with four ISOFIX and five top-tether anchorage points fitted across the second and third rows, although the latter will inevitably prove to be a much tighter fit.

The driver and front passenger are still taken care of, with a front cubby taken up by two heated/cooled cupholders, a wireless smartphone charger, two USB-C ports and a 12V power outlet, while their door bins take one large and one small bottle each.

In-cabin storage options include the large central storage bin, which hides another USB-C port, while the glovebox is on the smaller side, with about a third of it taken up by the fragrance, which is pumped into the cabin to ensure the interior always smells its best.

It’s missing a few little family items found on other large SUVs but it’s still a fairly practical family car. The cabin is spacious but passenger comfort has been prioritised over storage options.

Front and middle row occupants enjoy most of the room but third rowers will be comfortable on short journeys.

I would be saving these seats for the kids on longer trips, unless you want to get dagger eyes from any adult passengers stuck back there as the amenities aren’t as extensive as you might like with only two cupholders, a reading light and air vents (which aren’t directional).

With the Sensory Package included, the inside is an example of luxury with its heated and ventilated front seats, as well as the heated outboard seats in the middle row.

I love the massage function up front and that it’s customisable for intensity and position. The heated steering wheel is also a nice feature on the chilly days we’ve been having lately.

The tech is quite good with dual 12.3-inch touchscreens stacked on the dash and centre console.

They have haptic feedback, which means they vibrate when you touch them, but curiously this feature disappears while you’re using the wireless Apple CarPlay.

It did take a little while to get used to the Audi system and the haptic feedback, but once you do it’s easy to handle. There’s Bluetooth, digital radio, wired Android Auto and built-in satellite navigation, too.

The head-up display is super clear and displays the sat nav guidance and speed. What I really love is the four-zone climate control – meaning the middle row can get some further adjustments for ultimate comfort.

Charging options are okay with the front enjoying a wireless charging pad, two USB-C ports and a 12-volt socket. Middle row passengers also get a couple of USB-C ports but third rowers miss out.

I was surprised by the lack of storage throughout and this leads me to think this would suit older families best. For example, the middle console is large enough to only fit a phone. Still, each row gets two cupholders and a drink bottle holder in each door.

The boot is an acceptable size with all seats in use at 295L but with the third row stored, it jumps up to a more respectable 770L. There are stacks of different storage accessories available to purchase, if you need extra space.

The third row is a 50/50 split and the middle row has a very practical 35/30/35 split, which opens up the storage options.

The level load space is handy for the grocery run. But there’s no underfloor storage, and you don’t get a spare tyre, just a puncture repair kit.

A powered tailgate is handy, although this one's a bit faster than others I’ve sampled.

The SQ7 is a performance SUV and that means you’re paying for some heavy-hitting engine specs. As such, expect to pay $166,400 before any on-road costs or optional extras.

That puts it just under the cheapest of its competitors, so it doesn’t feel outrageous for what you get.

Our model has been finished in 'Matador Red' and I was pleased to see paintwork options are included in the base price (as they should be).

Our model does have the 'Sensory Package', which adds $13,300 to the price tag but that bundle includes some cool features like an extended leather dashboard, a synthetic suede headliner, an 'Advanced 3D' 23-speaker Bang & Olufsen sound system, an air quality system (with built-in perfume!), a front seat massage and ventilation function and heated rear outboard seats.

Even without the package, it’s still fairly well-specified with its diamond-quilted 'Valcona' leather trim, HD Matrix LED lighting, customisable ambient lighting, as well as wireless Apple CarPlay and Android Auto to name just a few.

The GLS63 is powered by a familiar 4.0-litre twin-turbo V8 petrol engine, with its version producing a thumping 450kW of power at 5750rpm and 850Nm of torque from 2250-5000rpm.

This unit is mated to a nine-speed torque-converter automatic transmission and AMG’s fully variable 4Matic+ all-wheel-drive system with torque vectoring and a rear limited-slip differential.

This set-up also features Mercedes’ EQ Boost 48V mild-hybrid system, which actually gives a 16kW/250Nm electric boost in short bursts, such as when accelerating off the line.

Speaking of which, the GLS63 sprints from a standstill to 100km/h in just 4.2 seconds, while its top speed is electronically limited to 250km/h.
 

The new TFSI engine in the SQ7 is monstrous. It’s a 4.0-litre twin-turbo petrol V8 with maximum outputs of 373kW/770Nm.

To say it’s powerful is an understatement. This would be at home on the autobahn and my son cheered whenever I had to get up to speed.

It, of course, replaces the SQ7’s iconic diesel V8. The old TDI unit had 53kW less power but 130Nm more torque. However, the new engine delivers on power with aplomb.

The eight-speed auto transmission glides effortlessly through its changes and the all-wheel drive drivetrain is responsive.

The GLS63’s fuel consumption on the combined-cycle test (ADR 81/02) is 13.0L per 100km, while its carbon dioxide emissions are 296 grams per km. All things considered, both claims are unsurprisingly high.

In our real-world testing, we averaged a fearsome 18.5L/100km over 65km of driving, split between highways and country roads, so not your usual mix. A very heavy right foot definitely influenced that result, but don’t expect to do too much better in a normal run.

For reference, the GLS63’s 90L fuel tank can be filled up with 98RON petrol at a minimum.

With great power comes… okay fuel efficiency. Actually, better than okay considering the twin-turbo V8 engine. The official combined cycle fuel figure is 11.9L/100km and real-world testing saw my figure at 13.2L.

Considering how hard I drove this and the type of driving I did this week, which was a combo of open-road and urban, this is very respectable. Expect it to be much higher in the city, though.

The SQ7 has a large 85-litre fuel tank and based on the official combined figure, you should be able to get around 714km of driving range. That isn’t as great as more fuel-efficient options but still good for those who like their road trips.

Audi recommends a minimum of 95 RON premium fuel with a preference for 98 RON for ultimate efficiency.

Frankly, the GLS63 has absolutely no right being as capable as it is. It’s a really big bus that’s legitimately convinced it’s a sports car half its size.

Being a GLS variant, the GLS63 has independent suspension consisting of four-link front and multi-link rear axles with air springs and adaptive dampers, but its party trick is the addition of active anti-roll bars.

In what feels like magic, the GLS63 is simply not intimidated by corners, despite having massive dimensions and a considerable 2555kg (kerb weight) to deal with.

The active anti-roll bars make the GLS63 so much easier to drive fast through the twisty stuff, almost eliminating body roll, taking one key variable out of the equation for the driver. Active engine mounts are also fitted, helping to settle things even further.

The electric power steering on hand is also good. It is speed-sensitive and has a variable ratio, which basically makes the set-up more direct when it needs to be. It’s typically light in hand, too, until one of the sportier drive modes is engaged and extra heft is added.

So, handling is scarcely believable, which means the ride must be compromised, right? Yes and no. With the adaptive dampers in their softest setting, the GLS63 is very compliant. In fact, we’d say it feels luxurious when compared to other high-performance SUVs.

That said, our test vehicle was fitted with the optional 23-inch alloy wheels ($3900), which look the part but expose sharp edges and other road imperfections, not to mention generate noise easily heard inside. Naturally, feedback is exacerbated in the sportier drive modes.

Anyway, there’s more performance, and the GLS63 has the rest in spades. Its engine is a powerhouse in every sense of the word. It’s so powerful, in fact, that it hilariously hunkers down off the line or when suddenly accelerating at low speed.

Thanks to the mild-hybrid system, wads of torque is available from the get-go, making for a highly responsive driving experience, even in those rare moments when the engine isn’t on song.

While not as characterful as some of the other members in the 63 series, the GLS63 still makes some thoroughly entertaining noises, with its sports exhaust system popping like mad while on the overrun.

All of this ability is very well and good, but you need to be able to pull up quickly, and the high-performance braking package (400mm front and 370mm rear discs with six-piston fixed callipers and single-pot floating stoppers respectively) mercifully does exactly that.

The performance is awesome and I made excuses all week to hop in and drive it. It doesn’t hurt that when you press the push-button start, the engine rumbles and growls. There’s even a ‘spitting’ sound as the turbo fires up. It all promises fun.

While the power feels immense, you do have to get used to how to handle it. For example, when you first shift into gear and pull your foot off the brake, the car lurches forward as if it’s rearing to go. It took me a couple of days to get used to the little quirks of it. 

The steering is controlled and responsive, adapting to the conditions and speed at which you’re driving. If you’re accelerating hard, the steering turns a little stiff and the seat belt tucks you into your seat, reaffirming the addition of that S in the model name.

The cabin is very quiet and there’s no shuddering or vibration to be felt through the steering or seat.

The SQ7 features sports adaptive air suspension and it's dependant on how you drive and what drive mode you’re in. It makes for an extremely comfortable journey and not just for those in the front. The rear passengers are nicely cushioned, too.

This is a big car but you don’t feel those dimensions when you park it. Even with its 12.4m turning circle, it’s not cumbersome with the adaptive steering.

The dynamic 360-degree view camera is super clear but the parking sensors are too sensitive for my liking. It might just have been an oddity on the particular model I drove but the emergency braking did pop on a few times (scaring the hell out of me every time!).

The SQ7 has a healthy suite of safety features with the following being standard: LED daytime running lights, lane departure alert, lane keeping aid, blind-spot monitoring, rear cross-traffic alert, dynamic 360-degree view reversing camera (it turns with the direction of the steering wheel), dynamic parking guidelines, front and rear parking sensors, rear occupant alert, intelligent seatbelt monitoring and adaptive cruise control.

It also features an active bonnet, meaning it will lift up and away from the engine if the sensors detect that a pedestrian has been hit. As well as an SOS emergency call button.

It has AEB and forward collision warning with car, pedestrian and cyclist detection which is operational from 10-85 km/h (10-250 km/h for car detection). It is usual to see it operational from 5.0km/h, though.  

The SQ7 achieved a maximum five-star safety rating from testing conducted in 2019. It only has six airbags, which is fairly low for a family car, but that does include curtain airbags covering all three rows.

As with all Mercedes-AMG models, the GLS63 comes with a five-year/unlimited-kilometre warranty, which currently sets the standard for the premium market. It also comes with five years of roadside assistance.

The GLS63’s service intervals are relatively long, at every 12 months or 20,000km (whichever comes first). Better yet, it’s available with a five-year/100,000km capped-price servicing plan, but it costs $4450.

If I was spending my hard-earned cash on a vehicle like this, I would want to be treated like a queen when it comes to servicing.

Manufacturers should sweeten the pot when it comes to on-going servicing and ownership terms when you’re at this level but the SQ7 just comes with a pretty standard five-year/unlimited km warranty.

You can pre-purchase a five-year/75,000km servicing plan and it will set you back a total of $4100 (or an average of $810 per service), which is expensive but not outrageous for a performance vehicle.

Servicing intervals are reasonable at every 12 months or 15,000km, which is good.