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Mercedes-Benz GLS-Class


BMW X4

Summary

Mercedes-Benz GLS-Class

If you’re in the market for a full-size, seven-seat, luxury SUV you’re obviously living life large. Big family, lots of friends, dogs and cats, and heaps of activity - horses, boats, camping?

You’re not in the BIG big-buck orbit of the Bentley Bentayga, nor are you ready to plug into the electrified matrix with the Tesla Model X.

You’re aiming at a six-figure bullseye between $130,000 and around $150,000. On a three-year novated lease, somewhere around three grand a month.

Which takes in the chunky Lexus LX and German ‘Big Three’ - the Audi Q7, BMW X7, and this car, the new, third-generation, Mercedes-Benz GLS.

Mercedes-Benz Australia invited us to experience the car on a launch drive across city, suburban and rural roads.

Safety rating
Engine Type3.0L turbo
Fuel TypeHybrid with Premium Unleaded
Fuel Efficiency9.2L/100km
Seating7 seats

BMW X4

Launching new cars must be an endlessly repetitive job, and trying to keep over-fed, overly feted and ostentatious motoring journalists entertained would strain the will to live of any human being, or even a house elf. So it’s easy to see why the people at BMW tried something different when it came time to launch its new X4 M Competition. 

They were also dealing with a very strange car; not just an M version, but a Competition variant of a mid-size SUV (or SAV, as they prefer) with a kind of quirky coupe roofline that makes it look like it would prefer not be an SUV (or SAV) at all.

While the idea that someone might use this car for any kind of motorsport “Competition” seems as likely as Clive Palmer running for the bus, what it means is that this X4 gets an absolute rocket of an engine and all kinds of go-faster bits.

So, BMW decided to create a place called M Town - “a place where too much is just right”, as they put it - where we could experience this car in what you would have to call its unnatural environment.

M Town, in this case, was a giant clay pan hidden in the middle of the South Australian outback, with a rally circuit laid out on it, where we would be invited to drive the X4 M Competition as no one intended.

Cue much hilarity, and a highly unconventional non-road test.

Safety rating
Engine Type3.0L turbo
Fuel TypePremium Unleaded Petrol
Fuel Efficiency—L/100km
Seating5 seats

Verdict

Mercedes-Benz GLS-Class8/10

The new GLS is everything you’d expect of a Mercedes-Benz with an S in its name. Luxury, performance, space, and in this case, thoughtful practicality. A super-capable, super-sized family truckster with the lot.


BMW X47.6/10

Clearly it is hard to give a verdict on what car generally bought to be driven on public roads 99.9 per cent of the time is like to drive when you've only smashed it around a clay pan like a (very) amateur rally drive.

What we can tell you is that the X4 M Competition is a far more serious, exciting version of the (small) family friendly/cool and trendy young couple mid-size SUV, the basic X4. It also has a very exciting engine, and lots of polished gloss black bits on it and, for some reason, seems slightly more fun than the X3 it is closely twinned with. 

It is not a car that will attract, or makes sense to, everyone, and its high price will scare a lot of sensible people away. But clearly BMW believes there is a niche market of people who will want one, and will pay top dollar for one. There's no doubt Aussie buyers do love an M badge, and they may well warm to this one.

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

Design

Mercedes-Benz GLS-Class7/10

Launched globally in mid-2019, Merc describes the GLS as the S-Class of SUVs, which is apt given its 5.2m length, 2.5-tonne mass, and ultra-premium specification.

As mentioned, the GLS is big; a step up from the already substantial model it replaces. Built with the US market in mind, in fact it’s produced in Tuscaloosa, Alabama, it’s more than five metres long, close to two metres wide, and over 1.8m tall. And there’s more than three metres between the axles, a 60mm wheelbase increase over the previous model.

And despite the size of the canvas, the Benz design team has managed to make the GLS look like a modern Merc. Signature elements include obvious ones like the slatted grille with a couple of three-pointed stars on the nose.

But there’s also, the carefully chiselled twin ‘power dome’ bonnet, scowling LED headlights and vents to aid front brake cooling and smooth aero performance around the front of the car.

The big beast’s off-road intent is highlighted by extensions around the wheelarches, with big optional 22-inch rims sitting underneath. The fact they look right-sized for the car speaks volumes about its scale.

The racy AMG Line package is standard, and a recess and pronounced character line, tightening the lower waistline is a familiar Merc treatment, plus alloy roof rails toughen the look while dialling up practicality.

The rear is relatively simple, borderline generic, with tapered tail-lights offering the only strong whiff of design personality. But believe it or not, thanks to careful detail sculpting of the body, and smoothing underneath the car it boasts a drag figure of Cd 0.32. Outstanding aero performance for a large SUV.

The driver and front passenger are presented with a sweeping dashboard dominated by twin 12.3-inch digital screens, one primarily covering the instruments, and the central screen managing the MBUX media system, including audio, nav, phone integration, car set-up, and more, plus ‘Hey Mercedes’ voice control.

The overall feel is simple, and restrained, yet massively confident, with a subtle colour palette, large squared-off elements defined by brushed metal finishes, and an obvious, intense attention to detail, from the haptic controls to the beautifully finished, multi-function steering wheel.

And the standard Burmester audio system includes a two-way in-car communication function that subtly amplifies the driver and front passenger’s voices for those in the third row, and vice versa. Sheer genius.


BMW X47/10

It only seems reasonable to give the X4 M one more point out of 10 for deign than its X3 non-identical twin sister, because at least the designers have had a bit of a go at the rear.

The idea of a coupe SUV has always seemed like something a hunchback came up with so that people wouldn’t only stare at him, but it obviously appeals to some people.

And yes, parked next to an X3, this version looks better, with sleeker tail lights and a more stylish rear altogether. The more pronounced swoop of the roofline is also an improvement.

But my argument remains that BMW calls this X4 M Competition “bold and functional”, which tells you all you need to know. When a marketing department can’t come up with a better term than “functional” when talking about design, for a BMW, it’s just not hat exciting to look at. 

In fact, it looks like a shopping trolley with bigger wheels and go-faster stripes.

The non-M X4 is not exciting to look at it, either, it’s even more… functional, and this version is delineated as being M special by covering as many things as possible with “black high-gloss bits”, so black mirrors, black side gills, black chrome tail pipes, you get the picture.

BMW might have also used the word “tough” to describe this X4, and they did keep talking about how people might track it, which seems as likely as me entering a rocking horse in the Melbourne Cup, but I think they’re having a lend of themselves.

The interior feels like a proper M car, though, with the big red, programmable M buttons on the chunky steering wheel particularly eye catching, and a very cool looking gear stick. The M Sport seats also both look and feel fantastic, and the Merino Leather is lovely. 

Practicality

Mercedes-Benz GLS-Class9/10

Space is obviously a critical factor here, and no surprise there’s copious amounts of it inside the GLS.

Front seat passengers enjoy plenty of breathing room, without feeling remote from one another, and there’s lots of storage in the shape of a large lidded box/armrest between the seats, a decent glove box, two big cupholders and jumbo door pockets with room for large bottles.

There’s one data-enabled USB port in the front, two charge-ports in the second row, and four in the third row. Shouldn’t be any complaints about powering mobiles, tablets or games.

The second row feels every millimetre the SUV limo. Simply getting in and out is made easier because an auto lowering function drops the car 25mm when one of the doors is opened.

I was able to sit behind the driver’s seat set for my 183cm position with heaps of head and legroom on offer. And there’s an extra 10cm of electrically adjustable travel to play with if those in the third row agree.

The fold-down centre armrest features a lidded storage tray and twin pop-out cupholders. There are netted pockets on the front seatbacks, and again, the door bins are big enough for large drink bottles.

Three adults across the rear is a breeze, there’s climate control ventilation, and a huge glass sunroof is standard. Rather than asking ‘Are we there yet?’ the kids will be disappointed when you arrive!

Then there’s what the Cleary family refers to as ‘the way back seat.’ A pair of third row seats for the lucky kids that get to inhabit their own little world. Getting in and out is relatively civilised thanks to electric slide and tilt for the second row seats, and space is generous. I could sit comfortably, so the kids will be all smiles.

With all seats upright cargo capacity is enough for a seven-person day trip (355L VDA). Press the button to fold the 50/50 split-fold third row down and your options expand substantially (890L). And with 40/20/40 split-folding second row lowered, transportation of a full, three-ring circus is on the cards (2400L). Overall, more space than the arch enemy BMW X7.

Plus, the ability to lower the car 50mm thanks to the standard air suspension makes life even easier. And one button lowers the second and third rows at the same time.

The spare is a collapsible space-saver, and towing capacity for a braked trailer is 3500kg, with a tow ball weight of up to 140kg. The ESP system also features a trailer stabilisation function that counters oscillation with “braking intervention.”


BMW X47/10

In practicality terms, the X4 loses the gains it made on looks against the X3, because you’re obviously getting less headroom in the rear, and slightly less boot space as well.

For a vehicle of its mid-size, the X4 isn’t too badly sorted for interior space, however. The rear seats, in particular, are impressive, in terms of knee room at least, although headroom is not fabulous.

I’m 176cm tall, and I could comfortably sit behind my own seating position without my knees even touching the seat in front, and headroom is also excellent, front and rear.

Those sporty front seats do make things feel slightly squeezed in the front, and the width of the headrests effects forward visibility for those in the rear, but they’re so great to sit in that you’d put up with that.

The rear seat splits 40:20:40, giving you access to the boot, which is 525 litres in the X4 M with the seats up, because you’ve chosen the more practical option (the X3 gets 25 litres more).

Drop the rear seats and you’ve got a useful 1430 litres of loadspace when you’re driving two-up, although you’d have 1600 litres if you’d chosen the cheaper X3 M.

There’s plenty of space for your phone, on its wireless charging pad, and you also get two cupholders for the front chairs, with another two in the rear armrest.

Price and features

Mercedes-Benz GLS-Class8/10

The GLS launches in Australia with two models, the turbo-petrol GLS 450 4Matic at $146,500, before on-road costs, and the turbo-diesel GLS 400 d 4Matic at $153,300.

Specification is identical across the two variants, and when you’re competing against the likes of the Lexus LX570, Audi Q7 and BMW X7, as you might expect the list of standard features is lengthy.

Aside from the comprehensive suite of safety tech, covered in the Safety section below, the GLS equipment list includes, 21-inch alloy rims, adaptive high beam assist, air suspension, alloy roof rails, AMG body kit, a huge panoramic sliding glass sunroof, privacy glass from the B-pillar back, auto tailgate, keyless entry and start, rain-sensing wipers, cruise control, LED headlights, and power closing doors.

The power closing doors are a big plus for parents not wanting to disturb kids nodding off in the car, with the soft-touch function drawing the door in for the last few millimetres to an almost silent close.

Inside there’s ambient lighting (64 colours), strategically placed open pore oak wood trim, 13-speaker/590-watt Burmester surround sound audio, electric folding second and third row seats, a head-up display, ‘Mercedes-Benz’ branded illuminated sills, leather seat upholstery (‘Artico’ faux leather on the dash and doors), multi-adjustable electric seats in the front and second row (memory in the front), electrically adjustable steering column, leather-trimmed multi-function steering wheel, and five-zone climate control.

The multi-media system is spectacular, incorporating the twin 12.3-inch digital screens, the central media unit managing nav, digital radio, mobile device connectivity, Apple CarPlay and Android Auto, plus vehicle tracking. There are also remote vehicle status functions (door locking, valet parking, etc), global search (Amazon Alexa, Google Home, Yelp, and Trip Advisor), and a wireless device charging pad.

The basket of goodies can hold its head high in this part of the market, so the value equation stacks up well.

 


BMW X47/10

It’s a tricky thing to evaluate such a weird beard of a car as this in terms of value, because normally when you’re being asked to spend $164,900 for a BMW you’re getting something that’s all sports car, wrapped in sexiness.

In the case of the X4 M Competition, you’re getting a mid-size SUV that’s not exactly capacious but goes like the clappers, and looks… like a mid-size SUV. And that's a lot of money for one of those.

To be fair, the X4 M has a more coupe-shaped roofline than the X3 version it shares its M Competition badging with, but this is a case of being less unattractive rather than better looking.

And, on the downside, you’re paying $7000 more than you would for the ever-so-slightly more practical X3 version, which would be hard to justify even if the X3 M wasn’t already very expensive.

What you are getting for the money is an engine that will blow you away, so that’s worth a bit. 

The car only comes with the Standard Competition Package in Australia (it’s the top option elsewhere), due to the popularity of that kind of thing in our market, apparently.

That gets you the amazing engine plus a standard M Sport Exhaust, connected to four, black-tipped tailpipes, an eight-speed sports automatic, xDrive with 4WD and 4WD Sport modes, and an Active M Differential.

You’ll also score “Professional” satellite navigation, Comfort Access, a Panorama sunroof, M Head Up Display, Driving Assistant Plus with semi-autonomous functionality including Active Cruise Control and Parking Assistant Plus, plus Hill Descent Control.

And don’t forget 21-inch light alloy wheels, Adaptive LED headlights, ambient interior lighting with six colour options, and alarm system, very sexy M Sport seats (the M logo on the headrests even glows at night when you open the door) with Extended Leather Merino trim, a 16-speaker harman/kardon stereo system, tyre-pressure monitoring, lane-keeping assistant, wireless charging, individual roof rails, rear roller sunblinds and BMW Connected Drive. 

Are there any options you could even want on top of all that? Have you ever seen a BMW offered without them? 

Strangely and uniquely, BMW asks you to pay for Apple CarPlay, which everyone will, at $623, and you can have your seats ($700), or steering wheel ($500) heated for winter mornings. Active seat ventilation is $1600 more, and metallic paint will sock you $2000, or $2350 for Individual Metallic (you can have Alpine White, non-metallic, for free).

Engine & trans

Mercedes-Benz GLS-Class8/10

There are two engines on offer. The 3.0-litre (M256) in-line six-cylinder turbo-petrol GLS 450 4Matic, and the 2.9-litre (OM656) in-line six-cylinder turbo-diesel GLS 400 d 4Matic.

The all-alloy, twin-scroll single-turbo petrol engine delivers peak power of 270kW from 5500-6100rpm, and maximum torque of 500Nm across a broad plateau from 1600-4500rpm. It also features a 48-volt electrical system driving the ‘EQ Boost’ set-up, able to deliver an extra 16kW/250Nm for short periods. The integrated starter-generator also enables energy recuperation.

Although the all-alloy, twin-turbo diesel features variable valve lift it gives some ground on power, offering up 243kW between 3600-4000rpm, but torque is a solid whack, with 700Nm on tap from 1200-3000rpm. Worth noting, that to minimise emissions this engine features a “selective catalytic reduction converter” in the exhaust, which brings with it the use of an ‘AdBlue’ reducing agent. The separate AdBlue tank has a capacity of 31.6 litres.

The nine-speed auto transmission is the same in both versions, although the diesel has a slightly lower final drive ratio.


BMW X49/10

No matter what you think of the X4 M Competition - its looks, its very existence - there’s no denying that its engine is something to be very excited about.

The 3.0-litre in-line six with M TwinPower Turbo technology is 90 per cent new, according to BMW, and will soon see action in the new BMW M3 and M4, and it is a rip snorter. The folks at M have thrown everything at it, using 3D printing to make the cylinder head, a forged crankshaft, and two new mono-scroll turbochargers, which are obviously different from the twin-scroll versions in the M5, and lift direct fuel-injection pressure from 200 bar to 350 bar. Apparently they’re even better. It also gets an electrically controlled wastegate for maximum efficiency.

The goal was an impressive 500 horsepower, or 375kW in our lingo, and they’ve achieved it. They’ve also made magic by combining both traditional BMW free-revvingness and savage turbo torque. With all of its maximum 600Nm available from 2600rpm to 5950rpm, it has the highest torque bandwidth of any BMW engine.

The screaming six can rev all the way to 7200rpm, at which point it sounds truly Wagnerian in its magnificence, and that 375kW peak point arrives at a dizzying 6250rpm.

This really is an engine that wants you to belt the hell out of it, and when you choose its most aggressive modes, and turn the adjustable M exhaust to its noisiest setting, it’s a joyful experience.

It’s also a weird one, because there’s just something so out of place about an engine like this in a car like this - it’s like finding out that your mum has secretly been cage fighting - but still, in pure engine terms, it’s a cracker.

The ZF eight-speed torque-converter automatic transmission is also silky smooth and seamless, as you’d expect.

Fuel consumption

Mercedes-Benz GLS-Class8/10

Claimed fuel economy for the combined (ADR 81/02 - urban, extra-urban) cycle for the GLS 450 is 9.2L/100km, the more frugal GLS 400 d trimming that to 7.7L/100km. The petrol 450 emits 210g/km of CO2 in the process, the diesel 400d dropping that slightly to 202g/km.

Stop-start is standard, you’re looking at premium unleaded for the 450 GLS, and you’ll need 90 litres of dinosaur juice to full the tank on both models.

 


BMW X48/10

There’s no official Australian figure as yet, and we certainly didn’t do any testing that would be helpful, so all we can tell you is that the claimed figure is 10.6 litres per 100km. Which would be good, if you could actually achieve it. Good luck with all this temptation on board.

Driving

Mercedes-Benz GLS-Class7/10

Merc claims the GLS 450 will sprint from 0-100km/h in 6.2sec, and the 400 d in 6.3sec. Not hanging around for a 2.5 tonne mothership. But the standout is the 400 d’s torque. All 700Nm of it available from just 1200rpm to 3000rpm; right in the mid-range sweet spot.

The nine-speed auto transmission is smooth yet responsive, with paddles on the wheel for manual shifts when you want to pick the ratio. The combination of effortless grunt and the nine-speeder keeping things on the boil is an impressive one.

Suspension is by double wishbones at the front and multi-links at the rear, and while you can feel the weight in cornering, the standard Airmatic air suspension (which does away with steel springs) is superb in terms of ride comfort and body control.

We took a deep breath and pushed enthusiastically through a series of sweeping corners and the fat (285/45 fr - 325/40 rr) Continental ‘PremiumContact 6’ rubber wrapped around our car’s (optional) 22-inch rims gripped hard.

The ‘4Matic’ all-wheel drive system also seamlessly shuffles torque between the front and rear axles (theoretically up to 100 per cent in each direction).

Merc has put extra focus on body rigidity, the tuning of engine and suspension mounts, and sound absorption, and it shows. The GLS 400 d is beautifully refined on the highway. A neat touch is the car automatically lowering 15mm at motorway speeds or when ‘Sport’ mode is selected.

Steering is electromechanically assisted, and Merc says the front suspension geometry has been revised to minimise vibration through the wheel. And yes, feedback is minimal, but unfortunately so is road feel with only a general connection between your hands on the wheel and the front tyres on the bitumen.

When you’re steering a large beast like this, often with something substantial hitched to the back, you want to know braking performance is up to the task, and the GLS’s big ventilated discs all around deliver reassuringly strong stopping power, with nice, progressive pedal feel to boot.

The seats are adjustable six ways to Sunday, but beyond that they’re comfortable and supportive, even over long stints behind the wheel.

We stayed on the bitumen, because, let’s face it, that’s where this car will spend 99.9 per cent of its time, with the exceptions of the boat ramp, a ski weekend or pony club.

For those special occasions the optional ‘Off-road engineering package’ adds a low-range transfer case, inter-axle locking, hill descent control, and under body armour for more serious work.


BMW X48/10

In theory, the X4 M Competition shouldn’t be very different to drive at all from the X3 M Competition with which it shares an engine, and just about everything else. At the same time, it would be nice if was more fun to drive, because that would help to justify the fact that it costs $7000 more than the (slightly more practical) X3 version.

The differences are mainly about looks, of course, but those aesthetic changes also make the X4 ever so lightly longer, wider and lower than the X3. 

That really shouldn’t make a difference you can feel, yet somehow, every time I switched into the X4 and began another wild, hooting, dusty circuit of the rally course set out for us be foolish on at M Town, I found myself having slightly more fun than I’d been in the X3.

An actual rally driver who was in attendance, mainly to laugh at our ineptitude and because their diet consists largely of dust particles, told me he’d also found the X4 ever so slightly more chuckable, and stable, also.

So perhaps there are two reasons for choosing to spend $7K more on an X4 - the rear end, and the fun, but then again, this is probably only a factor if you attend to take your new BMW on some kind of mad motorsport adventure.

Certainly, in the unreal environment in which we tested these cars, they were hugely fun - overly powerful, playful, sporty in terms of steering feel and cabin ambience - but we will have to wait and see what they’re like in the real world.

Reports from overseas have hinted at overly firm ride quality, even in Comfort mode, and other foibles for the new X3 M Competition - like the fact that it doesn't actually feel all that fast, thanks to the 1970kg it's carrying.

What we do know is that the engine is a crackerjack, the (adjustable) steering gives fabulous feedback, and, if you happen to be on a clay pan, it’s just the vehicle you need to plaster a huge smile across your face.

I recommend the video footage highly.

One touch of genius that was beautifully highlighted, though, was the combination of the properly sports-car spec M Differential with an M version of xDrive, which allows you to choose between two 4WD modes, normal and 4WD Sport, which “pretty much does become rear-wheel drive”, as BMW admitted to us. 

This is such an M move it’s hilarious. Force us to make an all-wheel-drive car will you? Ha, we’ll put a button on it that turns it back into a proper BMW M car.

On a clay pan, where you can drive almost entirely sideways, sawing at the wheel and using that gorgeous engine to carve beautiful arcs in the Earth via the throttle,4WD Sport is a work of genius. 

In the real world, in this car, it’s… still a bit weird. 

The chassis feels super stiff as well, and the big strut braces under the bonnet show you how seriously they’ve taken that.

There’s no denying the how, or the know-how on display here, it’s just the why that’s hard to get your head around.

Safety

Mercedes-Benz GLS-Class10/10

At the time of this launch drive the GLS hadn’t been safety assessed by ANCAP, but you could make a small wager, like every penny you have to your name, that it will score a maximum five stars.

The expected active features are there, including ABS, ASR, and ESP, with additional tech including ‘Active Blind-Spot Assist’, ‘Active Brake Assist' (Merc-speak for AEB), active lane keeping and lane change assist, ‘Adaptive Brake’, ‘Attention Assist’, ‘Evasive Steering Assist’, ‘Parktronic’ (active parking assist with 360-degre camera), rear cross-traffic alert, traffic sign assist, and a tyre pressure warning system.

Then, if all that isn’t enough to avoid an impact the GLS is equipped with nine airbags (front and pelvis side for driver and front passenger, side for outer rear seat occupants, full-length curtain, and a driver’s knee bag), an active bonnet to minimise pedestrian injuries, and the ‘Pre-Safe Plus’ (flashes rear hazards to warn drivers closing too quickly from behind, tightening the belts at the same time, and locking the brakes if the GLS is stationary with a rear impact imminent).


BMW X48/10

The X4 M Competition has not been crash tested yet but the standard X4 previously received a five-star ANCAP rating. It comes with six airbags - driver, front passenger, head airbags for both rows, side airbags with seat occupancy detection for driver and passenger and side-impact protection for the front seats.

You also get DSC, ABS and DTC and driver-assistance systems including Driving Assistant Plus, Parking Assistant Plus, tyre-pressure monitoring and a speed limiter.

Ownership

Mercedes-Benz GLS-Class7/10

The Mercedes-Benz range is covered by a three year/unlimited km warranty, which, like Audi and BMW continues to lag behind the mainstream market where the majority of players are now at five years/unlimited km, with some at seven years.

On the upside, Mercedes-Benz ‘Road Care’ roadside assistance is included in the deal for three years.

Service is scheduled for 12 months/25,000km (whichever comes first) with pricing available on an 'Up-front' or 'Pay-as-you-go' basis.

As a guide, service pricing for the outgoing GLS is set at $2600 per service (up-front) and $3250 (PAYG), a saving of $650 a pop. Fourth and fifth services are also available for pre-purchase ($3550 and $4900).


BMW X47/10

As is typical for BMW, the maintenance requirements for the X3 M Competition are controlled by a Condition Based Servicing system, which constantly monitors the car, and the way it’s being driven, to determine when annual inspections or oil changes are required.

BMW is offering two service-inclusive packages, a five-year/80,000km Basic level for $3685, or the Plus, for $8173, which you should choose “if you drive spiritedly and you go through brakes a fair bit”, because it includes brake pads and discs over five years.

BMW seriously seems to think people are going to track this thing. Go figure.