Mercedes-Benz Gls600 vs Gmc Yukon

What's the difference?

It’s big, it’s bold and totally baller, but that’s kind of the point.

The Mercedes-Maybach GLS 600 might not win over many fans with its in-your-face design or its sky-high price tag, but there is definitely an appeal here.

Taking luxury to another level is no easy feat, especially in a Mercedes, but the attention to detail, lavish second row and butter-smooth V8 engine combine to turn the already-good GLS into this exquisite Maybach.

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

The 2025 GMC Yukon Denali is a big, comfortable, eight-seat 4WD with few rivals in the Aussie market. However, while it may occupy its own niche, it doesn't offer enough in terms of premium look and feel and towing capacity over what could be considered its rivals – and it all comes back to that price tag. 

While it lacks a competitive warranty and its price puts it way out of reach of a lot of 4WD buyers, if you are in the market for a big premium-style wagon with a V8 and eight seats – and the Nissan Patrol and Land Rover Defender 130 aren’t your cup of tea – then the Yukon Denali just might be the right choice for you.

But when all is said and done, for the price of the Denali, you could buy two Nissan Patrols – maybe not brand-new ones – and a camper trailer and a couple of cartons of beer. 

If you have wealth, why not flaunt it? I reckon that might be the philosophy of the Maybach designers back at HQ, and it kind of shows!

The styling of the Maybach GLS might be the most controversial thing about it. But honestly, I love it!

The liberal lashings of chrome, the three-pointed star hood ornament, and especially with the optional two-tone paintwork, it’s all just so over the top and in your face that it brings out a smile.

From the front, the Maybach is also distinguished by an imposing grille that gives it serious presence on the road, while the profile is characterised by massive 23-inch multi-spoke wheels – better park well clear of any gutters!

You’ll also notice the Maybach eschews the usual black-plastic cladding around the wheelarches and underbody found on lesser/cheaper SUVs in favour of body-coloured and gloss-black panels.

There is also a little Maybach badge on the D-pillar, which is a nice attention-to-detail touch. From the rear, there’s more chrome, while the dual exhaust outlets hint at the performance on offer. But it’s inside where you really want to be.

Everything in there is just a sea of soft-touch and premium materials, from the dashboard to the seats and even the carpet under your feet.

Though the layout of the interior mirrors the GLS, the extra detailing, like the Maybach-stamped pedals, unique multimedia surround and woodgrain steering wheel, elevates the cabin into something truly special.

And if you opt for the comfort rear seats, well they wouldn’t look out of place on a private jet.

The second-row seats also feature contrast stitching on the headrests, cushions, console and doors for that add a touch of class.

I can see the Maybach GLS might not be to everyone’s tastes, but it certainly stands out from the sea of samey-looking luxury SUVs out there.

The 2025 GMC Yukon Denali is 5337mm long (with a 3071mm wheelbase), 2378mm wide, 1943mm high and has a kerb weight of 2813kg.

Suffice it to say, it’s big. 

The signature Denali grille – with LED headlights and chrome accents – is the size of a house and it’s eye-catching. 

In terms of design, the rest of the Denali is standard SUV, but it's so massive it can't help but have plenty of presence on the road. 

This 4WD has 24-inch rims, which are not suited to off-roading at all, but I’ll get to that later.

The Denali’s dual exhaust system, with polished stainless-steel tips, adds to the street-cool aesthetic. 

The rest of the Denali exterior works – but it’s an in-your-face kind of success. 

Inside, the space is cavernous and with leather upholstery, wood-look trim and soft-touch surfaces you’d expect it to feel like a plush, well-appointed cabin. But it doesn’t quite hit the mark. 

Sure, all three rows of seats offer enough in terms of comfort and amenities but, for a $175,000 vehicle, the cabin lacks a distinctive premium feel, as you'd assume it should in a vehicle at this price point. That's a bit of a disappointment.

The Maybach GLS is based on Mercedes’ largest SUV offering to date, which means there is plentiful room for occupants and cargo.

The front row feels positively palatial, with heaps of head-, leg- and shoulder-room for six-foot (183cm) tall adults.

Storage options include generous door pockets with room for large bottles, two cupholders, a smartphone tray that doubles as a wireless charger, and an underarm storage cubby.

But the rear seats are where you want to be, especially with these second-row comfort seats fitted.

It’s rare when there is more room in the rear than the front, but it does makes sense for a car like this, especially when you consider the GLS this car is based on is a three-row vehicle.

The removal of seats six and seven mean there is more room in the second row, especially with the comfort seats fitted, allowing you to recline fairly flat and to get into a comfortable position.

Storage is also plentiful in the second row, with a bespoke centre console in our test car, the aforementioned drinks fridge, backseat storage and a nice door bin.

Open the boot and you will find 520 litres (VDA) of volume, which is plenty for golf clubs and holiday luggage.

However, if you opt for the rear seat refrigerator, the cooler box will eat into boot space.

The Denali has retractable sidesteps, which is a big help to hobbits, such as me, and it also has big grab handles, again a welcome addition for the purposes of easier ingress for those on the wrong side of tall.

Once you climb inside, it’s easy to appreciate the fact that this wagon’s interior is vast, functional and comfortable, with plenty of storage spaces for everything – glove box, centre console, sunglasses case, door pockets etc – and plenty of charge points for your array of smart devices, even a wireless charge pad. 

It’s a well-designed cabin but, as mentioned earlier, the Denali lacks the prestige fit and finish and even build quality usually showcased in something at this price-point.

Instead, there are expanses of hard plastic throughout, storage receptacles with flimsy lids, and lacklustre fit and finish here and there.

The vertically-oriented 16.8-inch touchscreen multimedia system is simple enough to use, even when the road gets bumpy, although it sometimes took a few stabs of my finger to get the system to register a command.

Climate control switches and the like are located under the screen.

The three rows of seats offer more than adequate levels of comfort – the front seats are heated and ventilated and the second row’s outboard seats are heated – and each row also has the appropriate amount of amenity to suit its occupants, including cupholders, USB-C sockets, map pockets and the like.

The second-row seats even have 12.6-inch HD colour touchscreens – one on the back of each front-row headrest – with which to enjoy… whatever. Those units also have wireless headphones so everyone else in the vehicle doesn’t have to listen to… whatever.

Those in the third row get air vents, a USB-C plug and two cupholders on both sides. 

Rear cargo volume with all seats up is 722 litres. With the second row folded that number expands to 2056 litres, and with only the front seats left standing you have a 'yuge' 3480 litres to play with.

The boot area has tie-down points, a shallow section of underfloor storage and plenty of packing potential. The tailgate door is power-assisted with remote open and close.

As I mentioned, the Denali’s interior is very functional and very comfortable and that includes the second and third row, which offer plenty of space. 

Overall, my thoughts on the Denali’s cabin interior boil down to “massive”, “comfortable” and “feels cheap”.

The 2025 GMC Yukon Denali is a top-shelf, eight-seat, 4WD V8-powered wagon with a price-tag of $174,990, before on-road costs. 

The standard equipment list is a comprehensive and its more notable features include a 16.8-inch touchscreen multimedia system (with wireless Apple CarPlay and Android Auto - but no sat-nav), a 14-speaker Bose sound system, power-adjustable heated and ventilated leather-accented seats, a head-up display, 12.6-inch rear HD touchscreens for the second-row passengers, a panoramic sunroof and an auto-sense power rear door.

It also has a 360-degree high-definition camera system (with up to 11 camera views), power-retractable sidesteps, 24-inch machined and painted 'pearl nickel' alloy wheels (on Bridgestone all-season tyres), all-around adaptive air suspension and a maximum braked towing capacity of 3628kg (when it has a 70mm ball and weight-distribution hitch).

Exterior paint choices include 'Onyx Black', 'Summit White', 'Titanium Rush Metallic', 'Volcanic Red Tintcoat' (on the test vehicle and costs $2000), 'Downpour Metallic', 'White Frost Tricoat' and 'Sterling Metallic'.

Powering the Mercedes-Maybach is a 4.0-litre twin-turbo petrol V8 – the same engine you will find in many AMG products like the C 63 S and GT coupe.

In this application, the engine is tuned to produce 410kW and 730Nm, which is admittedly less than you get in something like the GLS 63, but the Maybach isn’t designed to be an outright powerhouse.

With drive sent to all four wheels via a nine-speed automatic transmission, the Maybach SUV will accelerate from 0-100km/h in just 4.9 seconds – also helped by a 48-volt mild-hybrid 'EQ Boost' system.

Though not designed for outright grunt, the Maybach GLS’s engine is nicely tuned to deliver smooth power and seemless shifting

The Maybach is more than a match for rivals such as the Aston Martin DBX (405kW/700Nm), Bentley Bentayga (404kW/800Nm) and Range Rover P565 SV Autobiography (416kW/700Nm).

The GMC Yukon Denali has a naturally-aspirated 6.2-litre V8 petrol engine – producing 313kW and 624Nm – and that’s matched to a 10-speed automatic transmission.

This is an impressive set-up – the Denali is punchy off the mark, smooth and refined at highway speeds and overall it offers a composed and comfortable driving experience.

The Denali has a full-time 4WD system, selectable driving modes include 'Normal', 'Sport', 'Off-road' and 'Tow' and an electronic limited-slip differential is standard.

Official fuel consumption figures for the Mercedes-Maybach GLS 600 are pegged at 12.5 litres per 100km, and it’s recommended to fill up with 98 RON premium unleaded, so be prepared for a big fuel bill.

This is despite the 48-volt mild-hybrid tech that lets the Maybach coast without using fuel in certain conditions, and extends start-stop functionality.

In our brief time in the car, we managed to get 14.8L/100km. Why is the Maybach so thirsty? That’s simple, it’s weight.

All the cool features like Nappa leather interior, woodgrain trim and 23-inch wheels add weight to the overall package, and the Maybach GLS tips the scales at nearly three tonnes. Ouch.

Obviously, with such a big vehicle – almost three tons – driven by such a big V8 engine, fuel consumption is a concern. The 2025 GMC Yukon Denali has a listed fuel consumption figure of 12.8L/100km (on a combined, urban/extra-urban cycle).

I recorded 16.2L/100km on this test. I did a lot of high- and low-range 4WDing and this wagon was never working hard.

The Denali has a 91L fuel tank so, going by my on-test fuel-consumption figure, you could reasonably expect a driving range of about 560km from a full tank. 

While you might not find many owners of the Maybach GLS in the driver’s seat, it’s nice to know it can hold its own in the driving dynamics department.

Don’t get me wrong, this won’t give the AMG-blessed GLS 63 a run for its money, but the Maybach SUV is far from dull.

And the engine plays a large part in this. Sure, it’s not as savage as some AMG models, but there is still plenty of grunt to come out of corners with enthusiasm.

The tune of the engine is obviously weighted towards smoothness and comfort, but with 410kW/730Nm on tap there is enough there to make things feel urgent.

The nine-speed automatic transmission also has to be called out, as it is calibrated in such a way that the shifts are imperceptible. There’s none of that mechanical jerkiness and clunkiness involved in swapping cogs, and it just makes the Maybach GLS feel that much more luxurious.

The steering, while straying a towards numb, still offers plenty of feedback so you know what’s happening underneath, but it’s the active body control that works to keep this hefty SUV in check in the bends.

The best bit, though, has to be the air suspension, which floats the Maybach GLS over bumps and uneven roads like a cloud.

The front-facing camera can also read the terrain ahead and set-up the suspension for incoming speed bumps and turns, taking comfort up to a whole new level.

All this is to say, yeah, the Maybach might look like a boat, and cost as much as a boat, but it doesn’t actually feel like a boat behind the wheel.

But really, are you buying this car because you want to be the driver? Or are you buying one because you want to be driven?

In the second row, it’s as close as you’ll get to a first-class flight on the road, and the seats are genuinely plush and cosy.

It’s eerily quiet and supremely comfortable in the second row, leaving you free to carry on with important business like drinking your champagne or uploading to the 'gram.

And while I usually suffer from a bout of motion sickness within minutes of looking at a phone in a car, I didn’t feel such ill effects in the Maybach GLS.

Even after about 20 minutes scrolling through Facebook and emails while being driven around, there was no sign of a headache or queasiness, which is all thanks to how well the suspension is tuned and the active anti-roll technology doing its thing.

The Denali is imported to Australia as a left-hand drive vehicle and then Walkinshaw's subsidiary company Premoso remanufactures the US 4WD wagons to right-hand drive at their facility in Clayton, Victoria. 

And that mob has done a commendable job.

Firstly, the Denali is very impressive on general driving duties – settled and composed, that V8 just rumbles along. It’s pretty close to flawless on the open road - smooth and refined. 

But off-road is a different story – especially in low-speed technical low-range 4WDing – and a lot of that has to do with the Denali’s sheer bulk and its 24-inch wheels.

The big pizza plate rims and paper-thin Bridgestone all-season tyres (285/40) aren't suited to four-wheel driving as they don’t offer the grip of a decent all-terrain and you can’t drop air pressures because there isn’t enough tyre there. Worth noting the spare is a Maxxis Bravo HT-750 (265/70R17).

In its favour, though, the Denali has a range of drive modes – one of which is Off-road and that seems well calibrated for a variety of 4WD situations – as well as high- and low-range gearing and an electronic limited slip diff.

Steering has a nice balance to it at low speeds, throttle response is quite impressive and controlled. And you can call on that 624Nm from the big 6.2-litre V8 pretty much as you see fit, and it delivers it smoothly and in a controlled fashion. 

This top-shelf variant has air suspension – that does some levelling out of even major imperfections in the road or track surface – and it does have a special damper system also working away to even out ride and handling. 

In terms of off-road measurements, the Denali offers approach, departure and rampover angles of 24.8 degrees, 20.5 degrees and 22.5 degrees, respectively.

Ground clearance is listed as 205mm, wading depth is not quoted, but likely a guesstimated 700-800mm, and turning circle is 12.4m.

And again, this is a big vehicle – 2813kg – so it requires more consideration, more patience, more skill and probably more experience than perhaps some smaller four-wheel drives do. 

The Denali's payload is listed as 634kg, which is not a lot for a massive vehicle like this. Its towing capacities are 750kg (unbraked) and 3500kg braked.

If you do, however, put a 70mm tow ball and a weight-distribution hitch on the Denali, you can tow as much as 3628kg legally (braked).

That's not a lot more than something like the Nissan Patrol, which is 3500kg, or the equivalent 4WD wagon or ute available in Australia already. So the extra towing capacity in the Denali is not that big of a selling point. GVM is 3447kg and GCM is 6577kg.

Ultimately, even though the Denali has sound four-wheel drive mechanicals and reasonable off-road traction control, it's hampered by its gargantuan dimensions and let down by its 24-inch wheels and paper-thin tyres.

If you got rid of the standard wheel-and-tyre combination and replaced it with a set of decent, aggressive all-terrain tyres on 17 inch or 18 inch, or even (if you had to) 20 inch wheels, those changes would go a long way to making this over-sized 4WD capable in some off-road scenarios.

In its current state, however, the Denali is a tow vehicle playing at 4WDing rather than the other way around.

The GMC Yukon Denali does not have an ANCAP safety rating because it has not been tested.

Standard safety features include six airbags (including full-length curtain airbags for all three rows) and a full suite of driver-assist tech includes AEB (with pedestrian detection), adaptive cruise control, blind-spot monitoring, lane-keep assist, rear cross-traffic alert, front and rear parking sensors, tyre-pressure monitoring, a surround-view camera, trailer sway control, trailer hitch guidance with hitch view and more.

Like all new Mercedes models sold in 2021, the Maybach GLS 600 comes with a five-year/unlimited kilometre warranty with roadside assist over that period.

This is class-leading in the premium segment, with only Lexus, Genesis and Jaguar able to match the warranty period, while BMW and Audi serve up assurance periods lasting only three years.

Scheduled servicing intervals are every 12 months or 20,000km, whichever occurs first.

While the first three services will cost owners $4000 ($800 for the first, $1200 for the second and $2000 for the third service), buyers can opt to save some money with a pre-paid service plan.

Under the service plan pricing, three years of maintenance will cost $3050, while four- and five-year plans are on offer at $4000 and $4550 respectively.

The 2025 GMC Yukon Denali has a three-year/100,000km warranty – which is on the wrong side of ordinary in this day and age.

Roadside assistance is available for three years but check with your dealership for more details on that.

Servicing is scheduled for every 12 months or 12,000km. The first three workshop visits come in at $398.33, $420.33 and $506.48, including GST. Not outrageous for such a hefty beast.