Ineos Grenadier vs Mercedes-Benz GLS

What's the difference?

The Ineos Grenadier Station Wagon is an impressive four-wheel drive. This five-seat off-roader is stacked with features, is very capable off-road and it's actually not atrocious on-road. But its price will deter a lot of people and those who buy into the Grenadier lifestyle have to be prepared to endure some compromises and discomfort along the way… because this is not for everyone. And that’s kind of the point.

This is a new old-school 4WD – a niche within a niche – and while it’s bursting at the seams with an abundance of quirky features, those quirks may quickly lose their appeal and become annoyances. A lot of people will buy the Grenadier because they like the idea of it, but the reality of living with it day to day – or any old-school 4WD, for that matter – may be uncomfortable for them, similar to all of those people who bought a camper-trailer during COVID only to realise they hated camping.

When all is said and done, the Grenadier is a retro-cool 4WD with solid off-road capability.

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…

In terms of its design, you're either going to love the Grenadier or not. This is a big, tall, chunky four-wheel drive, with plenty of presence about it and if that’s your cup of tea you’re in luck.

This Grenadier is 4855mm long (with a 2922mm wheelbase), 1930mm wide, 2050mm high and a listed kerb weight starting from 2150kg, depending on how many accessories you have onboard.

In Trialmaster guise, this Grenadier has a raised air intake, sidesteps, big steel wheels and all of the sort of stuff that screams, "Hey, look at me. I'm an off-roader!”.

The interior is spare enough to retain the spirit of adventure the Grenadier so wants to conjure but with plenty of comfort and features on offer (more about those aspects in the next section).

But the Recaro seats, the profusion of buttons, knobs and dials, and this 4WD’s abundance of quirky design cues, all more than a bit of a novelty, combine to set this interior apart from the mainstream 4WD market.

It’s a military-style cockpit, but in a good way; this is a snug cabin replete with textured surfaces and durable materials, and again the dash and ceiling are seemingly peppered with controls.

So, in the design stakes, the Grenadier has it all over most rivals, except perhaps the Toyota LandCruiser 76 Series wagon, which also exudes old-school cool.

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.

There is a lot to like about the Grenadier cabin when considered through a lens focused on practicality and comfort.

I’ve revised my opinion on the Grenadier’s all-around practicality since I last tested the Quartermaster Trialmaster and, as a result, have uprated it from 7.0 to 8.0 – but it’s important to note here that our test vehicle is equipped with plenty of extra-cost add-ons which have helped bolster the cabin’s rating.

The interior is set up for the messiness of day-to-day life, with an abundance of hard plastic and other durable surfaces everywhere. Its big chunky rubber mats all cop a bit of a beating, but remember those come at an extra cost ($381, at time of writing).

The seats in the front and back – all Recaro – are comfortable, as you get plenty of room everywhere, and while the control panel is a bit of a confusion of dials and knobs and buttons, if you give yourself a time to get used to it you should be fine.

The Grenadier Station Wagon is a five-seater and with all five seats in use, there is a fair amount of space at the back for all of your gear. I had my vehicle-recovery gear in here, MaxTrax, two air compressors and there's plenty of space available.

The rear cargo space has a durable, hard plastic floor and that cargo area is equipped with movable tie-down points in the walls and fixed tie-down points on each wall and a 12-volt socket.

It's made for real life, it’s ready for dirt and mud and mess, so it's not too bad. For all-round robust practicality, the Grenadier bests its rivals.

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.

Priced from $255,700 plus on-road costs, the GLS63 commands a $34,329 premium over its predecessor, although buyers are arguably getting more bang for their buck than before, even if it does sit well clear of the two other GLS variants: the $147,100 GLS450 and $153,900 GLS400d.

Standard equipment not already mentioned in the GLS63 includes regular metallic paintwork (our test vehicle was finished in Selenite Grey), dusk-sensing lights, rain-sensing wipers, power-folding side mirrors with heating, soft-close doors, roof rails, rear privacy glass and a power-operated tailgate.

Inside, keyless entry and start, augmented reality (AR) satellite navigation with live traffic, digital radio, a 590W Burmester surround-sound system with 13 speakers, a head-up display, a panoramic sunroof, heated seats (including middle outboard) and armrests, cooled front seats with massaging functionality, power-adjustable seats, a power-adjustable steering column, temperature-controlled front cupholders, five-zone climate control, stainless-steel pedals and an auto-dimming rearview mirror feature.

With BMW not offering an X7 M (although the slightly smaller $209,900 X5 M Competition is available) and the $208,500 Audi RS Q8 really from the segment below, the GLS63 does not have a direct rival in the Upper-large SUV segment.

In fact, the $334,700 Bentley Bentayga V8 is actually the model that comes closest to the GLS63 when looking for a seven-seater with a similar level of bent-eight performance.

The Ineos Grenadier Station Wagon Trialmaster is available with either a BMW 3.0-litre six-cylinder turbo-petrol engine (producing 210kW at 4750rpm and 450Nm at 1750-4000rpm) or a BMW 3.0-litre six-cylinder turbo-diesel engine – producing 183kW at 3250-4200rpm and 550Nm at 1250rpm-3000rpm.

Our test vehicle has the diesel. This Grenadier has an eight-speed ZF automatic transmission and a dual transfer case (high- and low-range 4WD), as well as a front, centre and rear diff lock – those are Trialmaster-level features.

This is a nicely refined engine-and-auto combination that does, however, take some urging to keep this big blocky beast on the move but, all in all, it offers a decent punch of torque across a wide rev range when needed while 4WDing.

It may not be overly slick or smooth, but the Grenadier’s engine and auto at least put it on a par with the likes of the Toyota LandCruiser 76 Series.

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.
 

Fuel consumption for the Ineos Grenadier Station Wagon with the diesel engine is listed as 10.5L/100km, and that's on a combined (urban/extra-urban) cycle.

On this test, which included a lot of high- and low-range 4WDing, I recorded 12.2L/100km. 

This vehicle has a 90-litre fuel tank so, going by my on-test fuel consumption figures, from a full tank, you could reasonably expect a driving range of almost 740km.

The diesel Ineos Grenadier Station Wagon has a 17-litre AdBlue tank, which you’ll have to top-up as required.

None of its rivals are particularly impressive in terms of fuel efficiency, so the Grenadier holds it owns here.

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.

There’s a pleasant surprise in store for you if you haven’t been in an Ineos Grenadier Station Wagon before. It's not terrible on road, it’s actually quite nice to drive.

Keep your expectations in check, though. This is after all a tall, blocky four-wheel drive wagon, so there is wind noise around the mirrors and the straight up-and-down windscreen and there is some tyre noise, especially from the Trialmaster’s BFG all-terrain tyres. But overall, it's not too bad.

You have to constantly make minor corrections in the steering to keep this chunky mongrel in line, and it takes some urging to get moving, but otherwise it is quite reasonable on sealed surfaces.

However, this one of those vehicles that is, of course, best exercised off-road. And the news is mostly good.

An impressive over-arching aspect about this vehicle is the fact you can drive it straight out of the dealership into some challenging 4WD-only terrain and you shouldn't have a problem as long as you drive it with consideration. This Grenadier is pretty much fully kitted out for hardcore four-wheel driving – or as close as you can get to it in a standard (albeit very well-equipped) off-roader.

The six-cylinder, as mentioned, works well with the eight-speed automatic transmission. It’s a punchy combination, but not over the top.

It has impressive low-range gearing, plenty of torque on tap, quietly effective driver-assist tech (including hill descent control), and, in this Grenadier, you have front, centre and rear diff locks, so all of those factors help to make this a willing and able four-wheel drive.

As well, off-road angles (36.2-degree approach, 36.1 departure and 28.2 ramp-over) all check out for a vehicle of this size. Ground clearance is a listed 264mm, wading depth is 800mm and if you happen to touch earth with the undercarriage of this vehicle it has solid underbody protection for such occasions. There are, however, some trade-offs worth noting.

The tweaked steering still lacks the pinpoint precision that is handy, especially when you're four-wheel driving. It has a very floaty ride on road because it is a big vehicle and it's more at home in a four-wheel drive scenario.

You have to drive this vehicle with plenty of mechanical sympathy, it has to be used with reasonable use in mind. This is after all $150,000 worth of rolling machinery and if you want to keep it as new, then you'd better drive it with care.

And, while that underbody is well protected, it needs to be because it’s quite vulnerable to tree roots, rocks, rocky steps and any other kind of natural hazard you may encounter in the bush.

Also, like any decent old-school-style four-wheel drive that's worth its salt, engaging the diff locks requires some patience, because it’s a process that has to be done in a strict sequence. First, engage the centre diff, then the rear and then the front. The diff lock buttons are on the ceiling control panel so give yourself time to get your head around it and you’ll be fine. This vehicle demands your attention because it is a real driver-focused experience, which is great.

If you plan to use your Grenadier station wagon as a tow vehicle, it’s handy to know its capacities are 750kg (unbraked trailer) and 3500kg (braked).

The Grenadier matches or betters its rivals in terms of on- and off-road driving.

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.

Neither ANCAP nor its European counterpart, Euro NCAP, have awarded the GLS range a safety rating, but it’s fair to assume it would perform well in testing.

Advanced driver-assist systems in the GLS63 extend to autonomous emergency braking with pedestrian and cyclist detection, lane-keep and steering assist (including emergency), adaptive cruise control, active blind-spot monitoring, rear cross-traffic alert, traffic sign recognition, driver attention alert, high-beam assist, tyre pressure monitoring, hill-descent control, hill-start assist, park assist, surround-view cameras and front and rear parking sensors.

Other standard safety equipment includes nine airbags (dual front, front-side, curtain and rear-side plus driver’s knee), anti-skid brakes (ABS), electronic brake-force distribution (EBD) and the usual electronic stability and traction control systems. Yep, it doesn’t leave much to be desired on the safety front.

The Ineos Grenadier Trialmaster Station Wagon is covered by a five-year/unlimited km warranty.

No capped price servicing is available and service intervals are scheduled for every 12 months or 15,000km, whichever occurs soonest, and total cost for the five years is $5992 for the diesel and $5832 for the petrol.

At time of writing, there are 16 approved INEOS Automotive dealerships in Australia.

If you buy a big 4WD you should expect big 4WD ownership costs, right? The Grenadier remains competitive with its rivals in this space.

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.