Mercedes-Benz Gls450 vs LDV D90

What's the difference?

The GLS450d impresses as an entry-level grade, as it’s a more family-friendly allrounder than the specialised AMG and Maybach variants. Its combination of a torque-rich diesel 48V hybrid drivetrain, air-cushioned suspension and plush interior are as well suited to luxury urban travel as they are to grand touring, where its heavy towing and generous load-carrying capabilities can shine. Whether it’s worth around $200K drive-away, only those who shop at the top end of town can decide.

Looking for a cheap, powerful diesel SUV with huge cabin space and a humane third row for adults? The D90 is a really sound offering, especially considering the price of entry for this top-spec diesel which should resonate with Aussies a bit better than the petrol version.

It has plenty of issues that could be ironed out, but they’re all so small and not sale-breaking it’s almost annoying how much better the D90 could be with just a little work. Rivals should be looking over their shoulder for what comes next.

This is an imposing vehicle in extravagant S-Class tradition, riding on an expansive 3135mm wheelbase and stretching more than 5.2 metres (5215mm) long and more than 2.0 metres (2030mm) wide with a turning circle that's nudging 13 metres.

However, it’s just under 1.8 metres (1798mm) tall, so there’s no clearance issues when accessing multi-storey carparks. And with its side-steps (or ‘running boards’ in nostalgic Benz speak) most adults can step rather than climb aboard, although passengers of shorter stature during our test noted that assist handles on the A and B pillars would be handy.

Central to its sophisticated chassis design is adaptive air suspension, which uses a pneumatic or ‘airbag’ form of springing with adaptive damping to continuously optimise ride comfort and handling response according to road conditions and driving dynamics (see Driving).

The GLS’s styling is clean and uncluttered with tasteful restraint evident in its chrome and satin-chrome highlights, yet it projects a majestic quality with its prominent four-louvre grille and elegantly spoked alloy wheels.

The spacious and sumptuous seven-seat interior is visually pleasing and practical, with a subtle blend of surface treatments, contrasting tones, lots of soft-touch surfaces and exposed stitching. This is combined (thankfully) with physical dials, switches and ‘piano key’ buttons to control numerous interior functions, in preference to distracting touchscreen prompts.

Some colleagues I’ve spoken to like the way the D90 looks. To me, it looks like someone gene-spliced a Hyundai Tucson with a SsangYong Rexton in a lab, then grew it in a stew of peptides and this was the result.

What can’t really be communicated in images is how truly massive the D90 is. At over five metres long, two metres wide and almost two metres tall, the D90 is certifiably huge. Given that’s the case then, it’s admittedly almost admirable that only the side profile makes this thing look a little goofy.

I think LDV has done a pretty good job on the front, and the rear is simple but well resolved for a vehicle that rides on a ladder chassis (just take a look at the Pajero Sport for how ladder-chassis rear designs can get… controversial…).

The wheels, garnishes, and LED headlights are all tastefully applied. It’s not ugly… just confronting… size-wise.

Inside shares some familiar characteristics with sister-brand MG. Look from a distance and it’s all quite nice, get in too close and you’ll see where the corners have been cut.

The first thing I don’t like about the interior is the materials. Apart from the wheel they are all pretty cheap and nasty. It’s a sea of hollow plastics and mixed trims. The faux-wood pattern, which is clearly just a print on a plastic resin is particularly gnarly. Reminds me of some Japanese cars from 20 years ago. It might work for the Chinese audience, but that’s not where the market is in Australia.

On the other hand, you could say “well, what do you expect at this price?” and that is true. Everything is here and works, just don’t expect the D90 to be playing alongside the established players when it comes to fit, finish, or material quality.

The huge screen works to finish the dash, but that darned software is so ugly you’ll wish it didn’t. At least all the major touch-points are ergonomically accessible.

Although it has a hefty 2655kg kerb weight, our test vehicle’s 3420kg GVM rating provides a useful 765kg of load capacity, which should comfortably absorb the combined weight of up to seven occupants and light luggage. Or with the third row of seating folded, five occupants and heavier luggage.

It’s also rated to tow up to 3500kg of braked trailer and with its sizeable 6920kg GCM (or how much weight it can legally carry and tow at the same time) it can carry its maximum load while towing its maximum trailer weight.

So, that’s commendable practicality, given it would be well suited to owners that need to tow large caravans, boat trailers, horse floats etc in style without having to compromise much (if at all) on either passenger numbers or luggage capacity.

Driver and front passenger space and comfort is exceptional, as you’d expect. Storage includes a large glovebox plus a bottle holder and bin in each door. The front of the centre console has two USB-C ports, wireless phone charging and heated cupholders, while the rear of the console has a large storage box with a third USB-C port and padded lid that doubles as a comfy elbow rest.

Even tall passengers in the second row of seating enjoy spacious comfort, given I’m 186cm and with the driver’s seat set in my position I have ample knee clearance, foot room and head space.

However, the central passenger must contend with a transmission tunnel in the floor and shoulder room would be squeezy for three large adults, which is okay for short trips but a maximum of two would be ideal for longer journeys.

The rear of the centre console also treats second-row passengers to a pair of USB-C ports, adjustable air-vents and a control panel that allows independent climate adjustment.

There’s also a large bin/bottle holder in each door plus storage nets on each front seat backrest. The centre seat backrest folds flat to allow long items (skis etc) to slot between the outer backrests. And it also serves as a fold-down armrest, containing two cupholders and a lidded slimline compartment that’s ideal for hidden phone storage.

The third row is uncommonly spacious, even for tall people, with padded armrests on each side containing cup holders and twin USB-C ports.

The carpeted rear luggage area has four load-anchorage points, a first aid kit and 12v socket. With the third-row seats upright it offers 355 litres of load volume, which increases to 1350 litres with the third row folded and 2400 litres (or 2.4 cubic metres) with both the second and third rows folded.

The D90 is as massive on the inside as it is on the outside. I’m talking better space than a minivan, and nothing says that more than the humane third row. At 182cm tall, I not only fit in the rearmost two seats, but I can do so in as much comfort as any other row. It’s staggering. There’s actual airspace for my knees and head back there.

The second row is massive and on rails too, so you can extend the amount of room available to third-rowers – and there’s so much room in the second row, you’ll have space even with the seats moved forward.

My only criticism here is that the giant rear door is far enough forward to make clambering into the third row a little tricky. Once you’re there though there are really no complaints.

The boot is even usable with the third row deployed, with a claimed 343L of space. That should be hatchback-sized, but the measurement is a little deceptive as the space is tall but shallow, meaning it will only allow you to place smaller bags (a few, if you can stack them) with the remaining space.

The boot is otherwise cavernous with a wild 1350L available with the third row stowed flat, or 2382L with the second row stowed. In this configuration, with the front passenger seat slid forward to its furthest position, I was even able to get a 2.4-metre-long benchtop in the back. Truly impressive.

Without buying an actual commercial van then, this could be the cheapest way into such room, especially in a 4x4 bi-turbo diesel SUV. No arguing with that.

Second-row occupants get their own climate control module, USB ports and even a full-sized household power outlet, with more legroom than you could possibly need. My only complaint was that the seat trim seemed a little flat and cheap.

Front occupants get large cupholders in the centre console, a deep armrest box (with no connectivity in it, just a randomly placed DPF cycle switch), pockets in the doors, and an awkward binnacle under the climate controls that houses the single available USB port. My phone didn’t fit in there.

No complaints about leg and headroom in the front either, though, with plenty of adjustability to boot. The driver’s seat offers a commanding view of the road, although it can be a little unsettling to be so far off the ground in corners… more on that in the driving section.

On paper, the seven-seat D90 is immediately quite appealing. At $47,990, it is literally a lot of car for the money. This latest iteration, the bi-turbo diesel, is only available in Executive trim at this price, but you can pinch pennies further by choosing one of the lesser petrol turbo variants.

Regardless, and much like its MG sister brand, LDV is good at making sure that essential spec boxes are ticked.

This includes screens galore as is popular in the Chinese market, including a massive 12-inch multimedia screen and 8.0-inch digital dash.

A screen is only as good as the software that runs on it though, and let me tell you, the D90’s software is not good. A quick flick through the weirdly small menu reveals barebones functionality, terrible resolution and response time, as well as possibly the worst execution of Apple CarPlay I’ve ever seen.

I mean, it doesn’t even use all of that screen real estate! Not only that, but in a recent overhaul to CarPlay, Apple released software to utilise wider displays – so the car’s own software must simply be incapable of supporting it. Inputs also proved laggy, and I had to repeat myself on multiple occasions to get any use out of Siri. Unlike every other car I’ve used, the software in the D90 wouldn’t return to the radio after you hang up or stop talking to Siri. Frustrating.

I’d rather have a far smaller display that actually worked well. The semi-digital dash was functional, although barely did anything that a small dot-matrix display isn’t capable of and had one screen which for my entire week said ‘loading’. I’m still not sure what it was meant to do…

At least it supports Apple CarPlay at all, which is more than could have been said for segment hero, the Toyota LandCruiser.

The D90 does tick some necessary items that are quite good. LED headlights are standard, as are leather seats with eight-way power adjust for the driver, a heated multi-function steering wheel, 19-inch alloy wheels (which still somehow look small on this huge thing), three-zone climate control, eight-speaker audio system, electric tailgate, keyless entry with push-start ignition, a reversing camera, front and rear parking sensors, tyre-pressure monitoring, as well as a fairly substantial safety suite which we’ll explore later in this review.

Great on paper then, the bi-turbo diesel engine is a boon, as is the fact that the D90 rides on a ladder chassis with an electronically-controlled low-range terrain mode for the transmission, too.

You’d expect to pay more – even from Korean and Japanese rivals for this much specification. No matter which way you cut it, the D90 is good value.

The GLS450d comes standard with a 3.0-litre turbocharged inline six-cylinder diesel producing 270kW of power at 4000rpm and 750Nm of torque between 1350-2800rpm.

This is paired with a 48V mild-hybrid system comprising a 48-volt battery (charged by regenerative braking) and an integrated starter-generator which provides both seamless engine stop-start and up to 15kW/200Nm of extra power and torque during acceleration.

A nine-speed torque converter automatic provides the choice of manual shifting using the steering wheel-mounted paddles, along with several selectable drive modes.

The active all-wheel-drive system continuously adjusts the engine’s torque delivery between front and rear axles (and individual wheels as needed) to maintain optimum traction and handling.

The D90 was initially offered in Australia with a 2.0-litre turbo petrol four-cylinder, but this 2.0-litre bi-turbo diesel makes much more sense, both for towing and long-distance touring.

It’s a four-cylinder offering a healthy 160kW/480Nm. You’ll note that’s pretty close to Ford’s similar 2.0-litre bi-turbo diesel, which is currently offered in the Everest…

The diesel also gets its own transmission, an eight-speed torque converter automatic with computer-controlled ‘Terrain Selection 4WD’.

This gives the D90 diesel a max towing capacity of 3100kg braked (or 750kg unbraked) with a max payload of 730kg.

Mercedes-Benz claims official combined consumption of 7.8L/100km and the dash display was showing 9.0 when we stopped to refuel at the completion of our 368km test, which included the usual mix of suburban, city and highway driving with up to five passengers at times and light luggage.

Our own figure, calculated from fuel bowser and tripmeter readings, was close at 9.5 which is outstanding sub-10L/100km economy for such a substantial vehicle in mostly metropolitan use. Therefore, based on our own consumption figure, you could expect a real-world driving range of around 950km from its 90-litre diesel tank.

The D90 diesel is said to consume 9.1L/100km of diesel on the combined cycle, but ours didn’t score near that with a figure of 12.9L/100km after a week of what I’d consider “combined” testing.

The D90 a big unit, so that number doesn’t seem outrageous, it’s just nowhere near the claim… All D90s have 75-litre fuel tanks.

It’s an enjoyable vehicle to drive, with multiple power adjustments for the seat and steering wheel combined with a large left footrest which provide supreme driver comfort and support.

The powerful and responsive turbocharged six-cylinder diesel and nine-speed auto are well suited to this application. The engine’s ample torque provides spirited acceleration from standing starts, taking only six seconds to reach triple-digit speeds.

This drivetrain would be well suited to heavy towing duties, given the 48V mild-hybrid system can contribute an extra 200Nm (in addition to the engine’s 750Nm), which raises the total theoretical torque output to almost 1000Nm.

The active air suspension provides a wonderfully cushioned ride that floats over bumpy roads, while maintaining excellent handling response and surprising agility. These commendable chassis dynamics, combined with the powerful and responsive drivetrain, makes the vehicle feel smaller and lighter than its dimensions and kerb weight would suggest.

Overall, it’s difficult to fault from a driver’s perspective, with the only exception being the voice activation function. This is often triggered by words or phrases other than ‘Hey Mercedes’ resulting in regular interruption of conversations. This needs some fine tuning.

The D90 is easier to drive than it looks… to a degree…

It lacks some polish of its more established rivals, which results in a drive experience that isn’t bad, but occasionally frustrating.

The ride somehow manages to be soft and harsh at the same time. It undulates over larger bumps, while transmitting the worst parts of smaller, sharper ones to the cabin. It speaks to a lack of calibration between the suspension and dampers.

That having been said, the D90 masks its ladder chassis underpinnings well, with little of that typical body-on-frame jiggle that some rivals still struggle with.

The drivetrain is good, but a little unruly. As you’d imagine from the figures, there’s more than enough power on tap, but the transmission tends to have a mind of its own.

It will occasionally lurch between gears, pick the wrong gear, and off-the-line will sometimes be delayed before shunting the D90’s bulk forward with a sudden mountain of torque. It doesn’t sound particularly good either, with the diesel surging through the rev range with industrial crudeness.

By the time the D90 has reached cruising speed though, there’s really not much to complain about, with the D90 milling along with plenty of power in reserve for overtaking. The view of the road is commanding, but you really feel the D90’s high centre of gravity in the corners and under heavy braking. The physics of such a large object are undeniable.

I have to say, LDV has done a fantastic job of the D90’s steering, with a quick, light feel that betrays the SUV’s size. It manages to stray on the right side of lightness though, not being so disconnected that you lose a feeling of where the wheels are pointing. No mean feat in something this shape.

Overall then, the D90 isn’t bad to drive and has some genuinely great characteristics, it just also has a litany of small issues that get in the way of it being truly competitive with segment leaders.

The LDV D90 carries a maximum five-star ANCAP safety rating as of 2017, and has a fairly comprehensive active safety suite.

Included on the diesel is auto emergency braking (AEB) with front collision warning, lane-departure warning, blind-spot monitoring, driver-attention alert, traffic-sign recognition, and adaptive cruise control.

Not bad for the price, and nice that there’s nothing optional. Expected items include electronic traction, stability, and brake controls, as well as six airbags.

The curtain airbags do extend to the third row, and there’s the bonus of a reversing camera and a tyre-pressure-monitoring system.

There is a full-size steel spare under the boot floor, and the D90 also gets dual ISOFIX and three top-tether child-seat mounting points.

The GLS comes with a five-years/unlimited km warranty (better than BMW and Lexus) and five years of roadside assistance. Scheduled servicing is every 12 months/25,000km whichever occurs first.

Mercedes-Benz offers capped-price pre-paid servicing packages with three, four or five-year terms. For example, the total upfront cost of the minimum three-year term is $4090, or an average of $1363 per service.

LDV covers the D90 with a five-year/130,000km warranty, which is not bad… but falls behind sister brand MG, which offers seven years/unlimited kilometres. At the very least it would be nice to have the unlimited kilometre promise.

Roadside assist is included for the duration of that warranty, but there’s no capped price servicing offered through LDV. The brand gave us indicative pricing of $513.74, $667.15, and $652.64 for the first three annual services. An initial six-monthly 5000km checkup is free.

All D90s need to be serviced once every 12 months or 15,000km, whichever occurs first.