Mercedes-Benz G-Class vs Lexus LX

What's the difference?

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 Lexus LX500d is a genuine seven-seater with impressive levels of refinement, comfort and even off-road capability.

The interior borders on being chintzy and it’s price-tag is the wrong side of bloody expensive, but there's no denying this Lexus is packed with stuff.

It’s more city than country, more bling than bush tourer – it’s like a tarted-up 300 Series – but that’s absolutely fine for the people who buy these.

I wouldn’t blame anyone for cross-shopping a Toyota LandCruiser 300 Series with this – and then opting for the 300 Series! For one thing, you’ll save a stack of cash.

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.

In firmly keeping with its target market, the LX500d is a premium-looking SUV.

This is a big unit and everything is slick and in-your-face impressive. Inside and out this Lexus looks a lot like a tarted-up LandCruiser 300 Series that’s been on a recent cycle of steroids. 

The optional 22-inch alloy wheels (part of the $5500 Enhancement Pack, as mentioned above) add to the overall look. 

The interior is a tasteful blend of woodgrain, leather accents, soft-touch surfaces, plush seating, and even comfortable arm-rests.

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.

Everyone is well catered for inside this Lexus, in terms of, well, everything.

The tech is easy to use – it was simple enough to get Apple CarPlay working – and the screens are big: the horizontal 12.3-inch multimedia unit upfront, an 8.0-inch screen (to monitor air-con, air-suspension height, the four-wheel-drive system, and other vehicle information), a head-up display, plus a 7.0-inch touchscreen for rear passengers.

Heating and cooling are via the 'climate concierge' and everyone can keep themselves as comfortably hot or cold as they like with separate controls.

Storage is plentiful with the usual array of door pockets, cupholders, big glove box etc, but there’s also a cavernous centre console (with multiple ways to open the lids) as well as map pockets for the second row, cup-holders in the centre fold-down armrest and even cupholders for the third row.

The Lexus has a Qi wireless charger as well as front and rear USB-C charging ports – one upfront, two in the second row, and two in the third row – so that should keep any whinging about devices to a minimum – but, knowing kids, it probably won’t. 

There’s also a 12V DC socket (front and rear) and a 220V socket in the rear cargo area.

Power-adjustable seats upfront make life easy for the driver and front passenger and these pews are as good as what I’d imagine a massage chair is like. Even the second row is on the right side of plush, but the third row is not quite there.

Second-row passengers have their own air con and entertainment controls, and there’s also an HDMI port.

The moon roof – an Enhancement Pack inclusion – is power-adjustable and allows plenty of welcome natural light in through the top.

In terms of packability, the Lexus LX500d has a claimed 174L (VDA) of cargo space when seven seats are in use; 982L when five seats are being used (that’s with the power-folding third row stowed flat at the push of a button); and 1871L when all seats are stowed away (the 60:40 folding second-row seats tumble-fold forward), except for the driver and front passenger. 

The boot has a 220V power outlet.

As mentioned the seven-seat Lexus LX500d is the entry-level variant in the Lexus LX line-up. 

The standard features list is comprehensive but, for the sake of brevity, we’ll rattle off only a handful of them including a 12.3-inch multimedia touchscreen (with Apple CarPlay and Android Auto, and Bluetooth), a 25-speaker Mark Levinson sound system, heated and ventilated power-adjustable seats, woodgrain steering wheel trim, 8.0-inch multi-information display, quad-zone climate control, 7.0-inch touchscreen and separate control panel for rear passengers, multi-terrain monitor with panoramic view, and 20-inch alloy wheels.

It also has a digital rear-view mirror, adaptive variable suspension, and active height control with low, normal and two high settings.

The Lexus LX500d retails for $153,091 (excluding on-road costs). Our test vehicle has an optional Enhancement Pack (which includes 22-inch alloy wheels, moonroof, hands-free power boot with kick sensor, $5500) and has been fitted with a towbar ($1545). The total price of this vehicle as tested is $160,136 (excluding on-road costs).

Exterior paint colours include the no-extra-cost 'Onyx' or any of these – 'Liquid Metal', 'White Nova' (F Sport models only), 'Sonic Quartz' (not available on F Sport models), 'Titanium', 'Graphite Black', and 'Khaki Metal' (on our test vehicle) – all of which incur an extra cost.

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 Lexus LX500d has a 3.3L V6 twin turbo-diesel engine, producing 227kW at 4000rpm and 700Nm between 1600-2600rpm.

It has a 10-speed automatic transmission with manual shift mode, a full-time all-wheel-drive system, low-range transfer case and locking diffs. 

The V6 is impressive and this is a smooth-shifting beast, but there’s a real lazy – not lively – feel to how the engine and auto work.

It’s pretty hefty as well – with a listed 2690kg kerb weight – so the Lexus takes a bit of a wind-up to get going off the mark and during overtaking moves.

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.

The Lexus LX500d seven-seater has a listed fuel consumption of 8.9L/100km on a combined cycle.

Our actual fuel consumption on this test, from pump to pump, was 13.2L/100km. Note: our test included a lot of low-range 4WDing. 

The LX500d has an 80-litre fuel tank – so, going by that on-test fuel consumption figure, you should be able to get a driving range of about 606km or so. Take off a 30km safe-distance buffer and you have 576km.

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 Lexus is a refined and comfortable vehicle on sealed surfaces.

It’s 5100mm long (with a 2850mm wheelbase), 1990mm wide (with a 1675mm wheel track, front and back), 1895mm high, and it has a 2690kg kerb weight.

The woodgrain steering wheel feels nice in the hands but even though the Lexus feels tighter and more controlled than the previous-gen – its body-on-frame structure has shed some kegs – this is a hefty rig so it’s no real surprise that body roll remains pronounced – it always tends to wallow even at optimal ride height. 

The suspension set-up – adjustable dampers, double wishbones at the front, a four-linkage rigid axle at the rear, stabiliser bars front and rear – is aimed at keeping things under control, and it certainly irons out any major issues, but it’s not perfect, even ably supported by adaptive variable suspension.

The brake pedals feel spongy, taking some time to ‘bite’, but the ventilated disc brakes front and rear did pull the Lexus to a controlled stop when I did a “watch out for that roo!” emergency-braking move.

And while, by its very nature, it may not be a very dynamic SUV to drive, its low-key composure makes up for that.

The gutsy V6 and auto work well, if lazily, together, and while that transmission is enough of a smooth shifter, 10 gear ratios seems like overkill to me.

Driving modes include normal, eco, sport and each adjusts throttle response, engine outputs, and gearshifts to suit the driver and the driving conditions.

It’s quiet inside – very quiet – and there’s no issues with vibration or harshness levels either.

Among its many tech-based attractions, the digital rear-view mirror is a handy touch.

This is a great open-road touring vehicle but with some flaws when it comes to adventuring off-road.

Our test vehicle is shod with Dunlop Grandtrek 265/50R22 112V tyres and these all-season tyres are fine for sealed surfaces, but they’re not up to low-range 4WDing in tough conditions, even more so on these 22-inch rims, as we found out during a few hours at our 4WD testing ground.

The Lexus has Cruiser-like off-road-capable underpinnings with top-layer dirt-focussed tech as well. 

There’s plenty of glass around so visibility is fine, steering generally feels light but takes on a clinical precision during low-speed, low-range 4WDing.

And ‘clinical’ is how the Lexus feels off-road – not always in a good way either. Like many contemporary tech-heavy off-roaders nowadays, it’s almost so good that you’re in danger of feeling entirely removed from the actual process of driving.

With multi-terrain select driving modes offering auto, dirt, sand, mud, deep snow, and rock options; with a multi-terrain monitor and panoramic view helping you ‘see’ everywhere that you usually wouldn’t be able to see on the track; with active height control helping you to lift the vehicle’s body in order to improve off-road angles at the push of a button; and the list goes on. 

That’s not forgetting downhill assist control, hill-start assist, crawl control, and off-road traction control.

Don’t get me wrong: high-tech is great because anything that helps maintain safe forward progress out bush or while beach driving is awesome but, Great Odin’s raven, it’d be great if the tech onslaught stops now. As if that’s going to happen.

If you’re looking to tow with your Lexus, listen up: unbraked towing capacity is 750kg, braked towing capacity is 3500kg. It has a gross vehicle mass of 3280kg and a gross combination mass of 6780kg. There you go.

It has a full-size spare tyre and that’s mounted under the rear cargo area.

The Lexus does not have an ANCAP safety ratings as it has not been tested yet.

Safety features include 10 airbags (driver and front passenger: front, knee, side; rear: side), AEB with pedestrian detection and daytime cyclist detection, front and rear parking sensors, reversing camera with rear camera washer, adaptive cruise control, road sign assist, blind spot monitor with rear cross traffic alert, tyre pressure warning system, and more.

Buying a Lexus gives you three-year access to Lexus Connected Services including (SOS) emergency calls, automatic collision notification, and stolen vehicle tracking.

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.

The Lexus LX500d has a five-year/unlimited-kilometre warranty.

Capped-price servicing applies for three years. Servicing is set at six month/10,000km intervals with each appointment costing $595 over that period.

Lexus Encore Platinum benefits – including valet parking and on-demand vehicle loans – are standard for new Lexus owners.