Jeep Gladiator vs Mercedes-Benz G63

What's the difference?

The Jeep Gladiator Rubicon is a very capable off-roader and it's not as terrible on-road as some people might assume.

But while it's a whole lot of fun to steer around on the dirt, it lacks the versatility, safety tech, and refinement that would shift it from simply being a decent hard-core 4WD ute to a good general-purpose vehicle.

However, by focussing on those factors, you're in danger of missing the Gladiator's point entirely. This is a purpose-built 4WD fun machine, which is perfect for its intended use. But, the problem is, it's not perfect, or even very good, at anything else.

The Mercedes-AMG G 63 isn't for shrinking violets. It's bold, fast, and loud, and in second-generation form massively improved dynamically and technically. It's a lot of money, but there's a lot to love, and here's hoping it stays around for decades to come.

The Jeep Gladiator appears built for purpose if your purpose is to head bush and have fun. And in Rubicon form it sure looks like it's capable of tackling hard-core 4WDing.

The Gladiator looks very much like its stablemate, the iconic Wrangler, with its chunky front end and blocky body.

It has more than the inkling of a US-style pick-up's presence at 5591mm long (with a 3488mm-long wheelbase), 1894mm wide, 1909mm high, and with a kerb weight of 2242kg.

The original (W460) G-Glass, then known as the G-Wagen (or Geländewagen for cross-country vehicle), was launched in 1979 as an ultra-capable off-roader, soon favoured by armies the world over. Arriving here in 1982, its distinctive, slab-sided form remained unchanged over the best part of four decades.

At close to 4.8m nose-to-tail, more than 1.8m across, and a bit over 1.9m tall, the G 63 is now longer (+110mm), wider (+106mm), and fractionally lower overall (-13mm), but still pulls off a convincing impersonation of a bread box.

Merc-AMG confidently quotes a drag coefficient (Cd) of 0.55 for the G 63, which isn't as bad as a brick (around 2.0… I Googled it) although it is in the same league as a heavy truck.

But it's the car's unique, upright stance, complete with pumped wheelarches and old-school flat glass, that sets it apart and draws people in. Looking more like a take-no-prisoners, functional device than a luxury cruiser, I can assure you it attracts as many admiring looks and comments as a low-flying supercar wedge.

The new-gen G 63 features AMG's vertically slatted 'Panamericana' grille, and our test example was fitted with the optional 'Night Package' ($5900) adding a range of dark exterior details including tinted indicator lenses, dark tinted glass, black exterior mirror shells and spare wheel ring, other black trim pieces and painted areas, as well as 22-inch AMG forged alloy rims.

Also worth noting, Merc has retained the G-Class's solid metal door handles, complete with the mechanism's unmistakable 'click-clack' opening and closing sound. Nice touch.

Inside, the biggest change is the upgrade from a conventional dual-gauge instrument cluster and central media stack to a pair of 12.3-inch digital screens, forming a sleek widescreen display, and bringing the G 63 in line with other recent Merc offerings.

Similarly, the gearshift moves from a traditional console-mounted set-up to Merc's 'Direct Select' lever on the steering column (exactly where the indicator stalk is located in 90 per cent of right-hand drive cars).  And the standard flat-bottom, leather-trimmed 'AMG Performance' steering wheel is a racy addition.

Like the exterior door handles, another tip of the hat to the car's heritage is retention of the horizontal grab handle ahead of the front passenger on the dash above the glove box. Nice to have something to hold on to if the going gets rough.

You have to give Jeep's designers credit because they know their outdoorsy stuff. The Gladiator's interior is nothing if not practical.

The ute has a squared-off and action-ready interior that seems up to the task of copping the dirt of an outdoors life.

The cabin feels like it's water- and weather-proof, even if that may not literally be the case. 

It's a snug interior and build quality generally feels solid.

The 8.4-inch multimedia touch screen is clear and easy enough to read while on the go, but it's too small. The Jeep's 'Uconnect' system is simple enough to get your head around and Apple CarPlay and Android Auto are easy to get working.

There's also a 7.0-inch LED driver-information display, which shows tyre pressure, tyre-fill alert, digital speed readout and more.

All controls, dials and switchgear are chunky, making for easy operation, no matter how bumpy the terrain you're traversing is.

The reach-and-rake-adjustable steering wheel incorporates audio, voice and cruise control controls.

Storage spaces are few, but at least they're well suited to adventure, such as tensioned mesh pockets on the doors and seat backs and small spaces with textured bases for your bits and pieces.

There are two USB-A ports and a USB-C port up front and two for back-seat passengers. There's also a 230V outlet up front on the centre console.

Seating is decent all-around but anyone taller than Tom Cruise's stunt double has to mind their head so they don't thump it on the unforgivingly hard ceiling of the detachable top.

There's a shallow storage space under the rear seat and, when that 60/40 split rear seat is folded flat, there are LED lights behind to illuminate the narrow storage space in the rear of the cabin, where there are also storage nets.

The tub's load space is 1442mm wide – 1137mm between the wheel arches so not wide enough for a pallet – and it is 1531mm long. Load height is 885mm at the tailgate.

The tray has integrated tie-down points and under-rail LED lights.

Payload is now a claimed 693kg, which is better than its previous 680kg but still rather ordinary when compared to a lot of dual-cab utes available in Australia.

Gross vehicle mass and gross combined mass are listed as 2935kg and 5656kg, respectively.

The Gladiator has a maximum towing capacity of 750kg (unbraked), and its 2721kg braked towing figure is a let-down against the 3500kg capacity of most other rivals.

This is a ute better suited to weekend camping trips than load-lugging work duties.

Another bonus for tourers though: the spare wheel is a full-size steel one.

The G-Class has never been a particularly squeezy proposition for passengers or cargo, but an extra 40mm in the wheelbase adds even more breathing space.

Getting in is the first step, and it's a big one. At 183cm tall, in an athletic mood, I could grab the A-pillar and swing up into the driver's seat in one vaguely respectable movement.

But, those side steps aren't just for show, and at the end of a long day provide a handy staging camp between terra firma and the lofty pilot's chair.

Once on-board there's plenty of room up front, with adequate storage including a bin between the seats (now with a double door opening rather than a single hinged lid), a modest glove box, oddments space and two cupholders in the centre console, and bins with space for bottles in the doors.

There's a 12-volt power outlet in the front, second row and cargo area, while there are two USB ports in the centre console bin and a charging USB port in the second row.

In the back I could have donned a dusty Akubra and still had headroom to spare, with generous foot room, and a substantial gap between my knees and the driver's seat (set to my position).

A fold-down armrest incorporates a pair of cupholders (as well as a through-port to the cargo space for long items) and there are map pockets on the front seat backs as well as space for bottles in the doors. Two adjustable air vents in the rear of the front centre console, and another pair in the B-pillars also provide climate-controlled air to those in the rear.

With the rear seats upright boot volume is quoted at 454 litres (VDA); enough to easily swallow our three-piece hard suitcase set (35, 68 and 105 litres) or the CarsGuide pram, or a largest-suitcase-and-pram combo.

There are tie-down shackles in each corner of the floor, usefully bright lighting, a netted storage area on the passenger side (containing five fluorescent emergency vests), and folding the 60/40 split rear seat liberates even more space.

Unfortunately, gaining access to that load space is fraught with compromise. First, the single-piece rear door hinges vertically and opens from right to left. No problem when you've nosed into a shopping centre space, but not so great when you're parking nose-to-tail on the left-hand side of the road.

That means you typically have a small space between you and the car behind to get the door open, and when it is at 90 degrees, you're blocked from unloading things onto the footpath until you've shut the door.

As well as that, the door has a full-size spare (alloy) wheel and tyre attached to it. Good because a full-size spare is welcome, and bad because it makes the already bulky door even heavier.

Those keen on towing things will be pleased to hear the G 63 is rated to haul up to 3.5 tonnes of braked trailer and 750kg unbraked.

Okay, you're laying down a quarter of a million bucks ($247,329 before on-road costs) and it's fair to expect some serious tech and standard equipment to keep you feeling warm and fuzzy after you're finished impressing friends and family with the G 63's howling acceleration.

For a start, there's a bunch of leading-edge safety tech on-board (detailed in the safety section below), and as expected that substantial cost-of-entry brings an extensive list of luxury features.

We've touched on the twin 12.3-inch 'Widescreen Cockpit', and available media includes digital radio and TV tuner, internet connectivity and 3D nav (with dynamic route guidance), as well as smartphone integration with Apple CarPlay and Android Auto.

Audio is a thumping 15-speaker, and 590-watt Burmester surround sound system, and the ambient lighting set-up offers a choice of 64 colours.

Also included are 'Multibeam' LED headlights, 'AMG Ride Control' adaptive damping, a 'Parking Package' with 'Active Parking Assist' and 360 camera, a sliding glass sunroof (with tilt function), the selectable AMG sports exhaust system, keyless entry and start, the AMG Performance steering wheel (trimmed in nappa leather), and 21-inch AMG '5-Twin spoke' alloy wheels.

Then there are the three 100 per cent differential locks (plus an 'off-road information centre'), electronically adjustable front seats (ventilated front and heated front and outer rear), steering column and mirrors (with memory function), three-zone climate control, nappa leather upholstery, a leather-finished dashboard with open-pore ash wood trim, a 'Dinamica' microfibre roof liner, and an AMG-specific IWC design analogue clock. Plus, the 'Dynamic Select' system enables a choice of pre-set driving profiles or individual settings.

The optional 'Exclusive Interior Plus Package' ($10,300) fitted to 'our' car adds deluxe nappa hide on the dashboard, door centre panels and grab handle, as well as a diamond quilted treatment on the seat centres, a black 'Dinamica' roof liner, velour floor mats (with edging in nappa leather), a frameless interior mirror and air vents in 'Silvershadow'.

On top of that the test vehicle was optioned with the 'Night Package' ($5900) detailed in the Design section, and Designo 'diamond white bright' paint ($5900) for a manufacturer's recommended list price (MRLP) of $269,429.

That puts the G 63 in the same price and equipment ballpark as the supercharged V8 Range Rover Autobiography ($268,900), twin-turbo V8 Porsche Cayenne Turbo ($239,400), and its Mercedes-AMG GLS 63 sibling ($221,729), powered by a version of the 5.5-litre twin-turbo V8 used in the first-gen G 63.

An impressive trio of alternatives, but in reality the idiosyncratic G 63 doesn't have any direct competitors, and for those who give in to the pull of its powerful tractor beams value-for-money becomes a uniquely personal concept.

The Gladiator Rubicon has the Wrangler's 3.6-litre Pentastar V6 petrol engine (209kW at 6400rpm and 347Nm at 4100rpm) and eight-speed automatic transmission.

The V6 has a lot of punch for on- and off-road driving and plenty of low-end torque for low-range 4WDing and, matched with the eight-speed auto, it's a well-proven team-up that consistently works well.

The G 63's 4.0-litre (M177) all-alloy V8 is closed deck design using direct-injection and a pair of twin-scroll turbos to produce 430kW at 6000rpm and no less than 850Nm from 2500-3500rpm. That's 10kW/90Nm more than the 5.5-litre twin-turbo V8 it replaces!

To improve throttle response and optimise efficiency, the turbos are located inside the engine's 'V', improving air flow and shortening the distance from the exhaust side to the turbos, and in turn, from the turbos to the inlet side.

And the housings on the twin-scroll turbos are divided into two parallel flow channels connecting with separate ducts in the exhaust manifold, allowing fine management of the exhaust gas coming in and pressure going out. Result is more torque and even better response times.

Drive goes to all four wheels via a new 'AMG Speedshift' nine-speed, dual-clutch auto (replacing the previous seven-speed auto transmission) with paddle shifters and a multiple downshift function which will go to the lowest ratio possible as you keep squeezing the shift paddle.

The 'AMG Performance 4Matic' all wheel drive system is front/rear biased 40/60 (50/50 in the previous model), although if you want to head off-highway the G 63 still features three 100 per cent diff locks and low-range off-road gear reduction.

The Gladiator Rubicon has listed fuel consumption of 12.4L/100km on a combined cycle. 

On test I recorded actual fuel consumption of 12.9L/100km, from fill to fill.

The Gladiator has an 83-litre tank, so, going by my on-test fuel-use figure, you could reasonably expect a driving range of approximately 643km from a full tank.

Claimed fuel economy for the combined (ADR 81/02 - urban, extra-urban) cycle is 13.1L/100km, with the 4.0-litre, twin-turbo V8 emitting 299g/km of CO2 in the process.

Despite the fact cylinder management tech means the engine will run on four cylinders under light load, and start-stop (with 'glide mode') is standard, we managed 16.7L/100km (measured at the bowser) over a mix of city, suburban and freeway running. To be expected for such a big bus, especially one that constantly tempts you into squeezing the throttle just to hear the exhaust bellow.

Minimum fuel requirement is 98 RON premium unleaded, and you'll need 100 litres of it to fill the tank.

It's certainly an experience, but the Gladiator is not as atrocious on-road as you may assume.

This vehicle is a lot of fun to drive because it demands a lot of attention and input to keep it on target.

The steering is floaty, with plenty of play in the wheel and understeer through corners, and there's a fair bit of tyre rumble from the BFG muddies.

The wing mirrors generate noticeable wind noise, but the Gladiator's not as awkward or unrefined as you might expect.

Because it's essentially a stretched Wrangler – with a 787mm longer body and a 480mm longer wheelbase than its stablemate – the Gladiator has a solid stance on the road and, for such an unashamedly off-road-oriented vehicle, it feels even more settled and composed than the Wrangler does on sealed surfaces.

This 2242kg ute is built for tough fun with a body-on-frame design and reinforced chassis, but the Gladiator manages to be nimble around town.

Ride quality is generally impressive with this ute cruising comfortably on live axles front and rear with coil springs and, in 2023 onward versions, Tenneco shocks all-around rather than the previous Fox Shocks set-up.

Aspects of the Gladiator experience will annoy some people. Visibility is compromised in all directions, the throttle is touchy, the 13.6m turning circle may add a degree of difficulty in attempts at fast turnarounds (on a city street or in a busy country pub car park) and all that driver attention and input the Gladiator demands of its steerer will become tiresome for a few drivers.

But, as expected, the Gladiator's true spirit is only ever fully revealed when you head off-road. It's a hell of a lot of fun in the dirt. Drop tyre pressures, do up your seat belt and let the Gladiator off the leash.

The 'Trail Rated' Gladiator is loaded with off-road mechanicals, from a 4X4 system with 4:1 low-range (contributing to a 77.2:1 crawl ratio), front and rear diff-locks, heavy-duty Dana 44 axles (front and rear), sway-bar disconnect and BFGoodrich Mud Terrain tyres, as well as a stack of driver-assist tech aimed at making you feel like Australian 4WD expedition legend Ron Moon.

Shocks engineered for off-roading add a welcome dimension of comfort and handling to the Gladiator on fast dirt and gravel tracks on the way to your chosen off-roading destination.

That 77.2:1 crawl ratio means nothing to most of us until you have the opportunity to experience the feeling of all that terrain-gripping torque for yourself.

In 4WD low-range first gear, and with both diffs locked, the Gladiator feels unstoppable. It climbed with ease a short steep rocky hill where I've seen drivers of modified vehicles opt for the ‘chicken' tracks either side.

The only thing is, because of the Gladiator's 3488mm-long wheelbase and 18.4-degree ramp-over angle, there's a real risk of bellying out or at least grinding the undercarriage on earth when you crest these steep hills, which is why you must drive with concentrated focus.

But that's part of the fun. It really is a driver-direct experience. You need to be aware of everything that's going on, you never feel like you're one step removed from the situation, or the terrain or the consequences of your driving… you feel dialled into the terrain and that's guaranteed to put a smile on any 4WD enthusiast's face.

Besides, the Gladiator does have substantial underbody skid-plates, protecting the fuel tank, transmission and transfer case, as well as heavy-gauge tubular steel rock rails to soak up off-road hits.

With an approach angle of 40.7 degrees, a departure angle of 25.1 degrees and a listed ground clearance of 249mm and a wading depth of 760mm, the Gladiator has decent off-road measures.

Suspension travel is okay, but to get even more stretch, you can hit the sway-bar disconnect button to drop a wheel to the dirt – or as close as possible depending on how deep the ruts are.
 
The Gladiator has 'Selec-Speed Control' (effectively an adjustable low-speed cruise control for 4WDing that can be set between 1.0-8.0km/h), and 'Off-Road+', which tweaks throttle and traction control, among other systems, to best suit the terrain.

It also has a forward-facing off-road camera so the driver has a chance to see any obstacles that might otherwise go unnoticed until it's too late, such as branches, rocks, tree stumps and hard rubbish.

Let's cut to the chase. The G 63's pure grunt overpowers its challenging aero profile to thrust this boom box on wheels from 0-100km/h in a claimed 4.5 seconds. And believe it or not, despite its greater length and width, it has enough power to punch a 240km/h hole in the air (maximum velocity is limited to 220km/h if you choose not to opt for the 'AMG Driver's Package').

The new electronic architecture brings with it the latest version of Merc's 'Dynamic Select' system with five driving modes adjusting the engine, transmission, suspension, steering and assistance systems right up to maximum attack Sport+ mode.

All 850Nm of peak torque is available between 2500-3500rpm and pinning the throttle anywhere in that band feels like lining up a runway and preparing to rotate for take-off.

The two-stage exhaust flap arrangement allows you to turn the noise up from growl to roar even at modest around town speeds, and the nine-speed transmission is sharp and positive, with the multiple downshift function (in manual mode) hilariously good fun.

The racy AMG sports seats are as grippy as they are comfortable, and the fat 295/40 Goodyear Eagle F1 rubber, wrapped around the optional 22-inch forged alloys, does a good job of keeping all that mass and momentum in control as the high riding G 63 careens around corners.

And speaking of mass, the job of hauling it from warp speed to rest sits with big ventilated discs all around (cross-drilled 400mm front/370mm rear), clamped by monster six piston calipers at the front and single piston at the back. They're progressive and reassuringly powerful.

So, the performance is as dramatic as ever, but when I think of previous Merc-AMG G-Class offerings, two main shortcomings come to mind... steering and ride.

The steering was like a laggy mouse, with a few beats separating input at the wheel from response at the front treads. And the damping came up short, with a bouncy ride par for the course.

Still sitting on a ladder-type frame, the new G's suspension was developed by Mercedes-Benz and Mercedes-AMG. And finally, it has a decent double-wishbone independent front-end, with a rigid axle at the rear and coil springs all around. Plus, a strut tower brace, Merc-AMG calls it a 'suspension bridge', now connects the front strut towers, increasing torsional rigidity.

Ride comfort, especially in the most compliant 'Ride Control' suspension setting and riding on the big 22s, is massively better. It's no limo. You'll still feel jittering over higher frequency imperfections. But it's way, way ahead of the first-gen version.

The steering system changes from a recirculating ball to rack and pinion, and is now variable ratio with electro-mechanical rather than purely hydraulic assistance. And it's also much improved. We're not talking about a Lotus Elise-style connection with the road, but the steering is clearly more predictable and responsive.

One thing that hasn't changed is an ocean liner-worthy, 13.6m turning circle. You'll need to plan ahead for U-turns and reverse parks, but enough parking cameras (including surround view) to please Cecil B DeMille are on hand to help.

It's like a whole new world with a familiar cover wrapped around a markedly improved package. But (there must be a but) visibility is still compromised by thick window and door pillars, and despite the new dash layout ergonomic efficiency is patchy, with some switches and knobs located in relatively awkward positions.

As mentioned earlier the G 63 features three 100 per cent diff locks and low-range off-road gear reduction. But forget breakover angles and wading depths. This 4x4 seeing off-road action is as likely as an Abbott 2.0 prime ministership.

Suffice it to say, this car wears the 'Schöckl' badge at the base of its B-pillar. And in case you were wondering, Schöckl is a 1445m mountain in Graz, the Austrian city where the G-Class is built (and big Arnie Schwarzenegger was born!).

In the second-gen G-Class's development, prototypes covered roughly 2000km over a five kay trail including gradients of up to 60 per cent and lateral inclines up to 40 per cent. So, despite its irrelevance, the off-highway box is ticked.

The second-gen G 63 hasn't been assessed by ANCAP or Euro NCAP but its new electronic architecture brings the car up to speed on active safety tech, now incorporating 'Distronic' cruise control with 'Active Distance Assist', 'Active Brake Assist', AEB (forward and reverse), 'Active Lane Keeping Assist', 'Blind Spot Assist', 'Adaptive High-Beam Assist', tyre pressure monitoring, and 'Traffic Sign Assist'. Plus, the 'Pre-Safe' system prepares the vehicle and occupants in the face of an inevitable collision.

And once that impact has occurred, you're protected by nine airbags, including rear seat airbags, full-length curtains and a driver's knee bag.

There are three top tether points for child restraints/seats across the back seat, with ISOFIX anchors in the two outer positions.

The Gladiator has Jeep's five-year/100,000km factory warranty, five-year capped price scheduled servicing, and lifetime roadside assistance.

The first five services are capped at $399 each and scheduled servicing is due every 12 months or 12,000 km, whichever comes first.

Mercedes-Benz (and by extension Mercedes-AMG) offers a three-year/unlimited km warranty with 24 hour 'Road Care' emergency roadside assistance provide for three years.

Servicing is recommended every 12 months/20,000km and a capped price servicing plan is available at Silver and Platinum levels for up to five years/100,000km.