Maserati Ghibli vs Mercedes-Benz Gls450

What's the difference?

The Maserati Trofeo Ghibli is a very strange beast, but there's no doubt that it is a beast. Fast, loud and capable on a race track, and yet still closely resembling a classy, expensive Italian family sedan, it is genuinely unique. And genuinely strange, in a good way.

The new GLS is everything you’d expect of a Mercedes-Benz with an S in its name. Luxury, performance, space, and in this case, thoughtful practicality. A super-capable, super-sized family truckster with the lot.

The Ghibli Trofeo is an alluringly beautiful car from just about every angle, with a genuine sense of occasion and presence about its nose, a sleek side profile and a much improved rear end, where the light clusters have been redesigned.

The Trofeo special touches are impossible to miss, particularly from the driver’s seat where you look straight into two vast nostrils on the bonnet. There are also carbon fibre pieces on the front air duct and the rear extractor for a sportier, wilder look.

The red details on the air vents on each side are the highlight, though, while the lightning bolt on the Maserati trident badge is another nice touch.

The interior is simply beyond special and feels even more expensive than it is. Overall, I’d say it again, it’’s alluring. Italian style at its best and the Ghibli is the Cinderella point in the range, because the Quattroporte big brother really is too large, and the Levante is an SUV.

Launched globally in mid-2019, Merc describes the GLS as the S-Class of SUVs, which is apt given its 5.2m length, 2.5-tonne mass, and ultra-premium specification.

As mentioned, the GLS is big; a step up from the already substantial model it replaces. Built with the US market in mind, in fact it’s produced in Tuscaloosa, Alabama, it’s more than five metres long, close to two metres wide, and over 1.8m tall. And there’s more than three metres between the axles, a 60mm wheelbase increase over the previous model.

And despite the size of the canvas, the Benz design team has managed to make the GLS look like a modern Merc. Signature elements include obvious ones like the slatted grille with a couple of three-pointed stars on the nose.

But there’s also, the carefully chiselled twin ‘power dome’ bonnet, scowling LED headlights and vents to aid front brake cooling and smooth aero performance around the front of the car.

The big beast’s off-road intent is highlighted by extensions around the wheelarches, with big optional 22-inch rims sitting underneath. The fact they look right-sized for the car speaks volumes about its scale.

The racy AMG Line package is standard, and a recess and pronounced character line, tightening the lower waistline is a familiar Merc treatment, plus alloy roof rails toughen the look while dialling up practicality.

The rear is relatively simple, borderline generic, with tapered tail-lights offering the only strong whiff of design personality. But believe it or not, thanks to careful detail sculpting of the body, and smoothing underneath the car it boasts a drag figure of Cd 0.32. Outstanding aero performance for a large SUV.

The driver and front passenger are presented with a sweeping dashboard dominated by twin 12.3-inch digital screens, one primarily covering the instruments, and the central screen managing the MBUX media system, including audio, nav, phone integration, car set-up, and more, plus ‘Hey Mercedes’ voice control.

The overall feel is simple, and restrained, yet massively confident, with a subtle colour palette, large squared-off elements defined by brushed metal finishes, and an obvious, intense attention to detail, from the haptic controls to the beautifully finished, multi-function steering wheel.

And the standard Burmester audio system includes a two-way in-car communication function that subtly amplifies the driver and front passenger’s voices for those in the third row, and vice versa. Sheer genius.

From the driver’s seat, the Trofeo Ghibli feels spacious indeed, and while it’s not as vast in the back as a Quattroporte, there’s plenty of room for two adults, or even three small children.

The move to throw sportiness at the Ghibli has led to it having firm but fabulous seats. They’re comfortable, and the leather is luscious, but the actual seat back is constantly letting your spine know that this is no ordinary Ghibli. 

Throw it around a track, though, and the seats feel just right, providing the kind of support you need.

Boot space is ample at 500 litres and the Ghibli feels like the sort of car you could take your family in, if only it didn’t make you feel like you were spoiling your children too much.

Space is obviously a critical factor here, and no surprise there’s copious amounts of it inside the GLS.

Front seat passengers enjoy plenty of breathing room, without feeling remote from one another, and there’s lots of storage in the shape of a large lidded box/armrest between the seats, a decent glove box, two big cupholders and jumbo door pockets with room for large bottles.

There’s one data-enabled USB port in the front, two charge-ports in the second row, and four in the third row. Shouldn’t be any complaints about powering mobiles, tablets or games.

The second row feels every millimetre the SUV limo. Simply getting in and out is made easier because an auto lowering function drops the car 25mm when one of the doors is opened.

I was able to sit behind the driver’s seat set for my 183cm position with heaps of head and legroom on offer. And there’s an extra 10cm of electrically adjustable travel to play with if those in the third row agree.

The fold-down centre armrest features a lidded storage tray and twin pop-out cupholders. There are netted pockets on the front seatbacks, and again, the door bins are big enough for large drink bottles.

Three adults across the rear is a breeze, there’s climate control ventilation, and a huge glass sunroof is standard. Rather than asking ‘Are we there yet?’ the kids will be disappointed when you arrive!

Then there’s what the Cleary family refers to as ‘the way back seat.’ A pair of third row seats for the lucky kids that get to inhabit their own little world. Getting in and out is relatively civilised thanks to electric slide and tilt for the second row seats, and space is generous. I could sit comfortably, so the kids will be all smiles.

With all seats upright cargo capacity is enough for a seven-person day trip (355L VDA). Press the button to fold the 50/50 split-fold third row down and your options expand substantially (890L). And with 40/20/40 split-folding second row lowered, transportation of a full, three-ring circus is on the cards (2400L). Overall, more space than the arch enemy BMW X7.

Plus, the ability to lower the car 50mm thanks to the standard air suspension makes life even easier. And one button lowers the second and third rows at the same time.

The spare is a collapsible space-saver, and towing capacity for a braked trailer is 3500kg, with a tow ball weight of up to 140kg. The ESP system also features a trailer stabilisation function that counters oscillation with “braking intervention.”

The GLS launches in Australia with two models, the turbo-petrol GLS 450 4Matic at $146,500, before on-road costs, and the turbo-diesel GLS 400 d 4Matic at $153,300.

Specification is identical across the two variants, and when you’re competing against the likes of the Lexus LX570, Audi Q7 and BMW X7, as you might expect the list of standard features is lengthy.

Aside from the comprehensive suite of safety tech, covered in the Safety section below, the GLS equipment list includes, 21-inch alloy rims, adaptive high beam assist, air suspension, alloy roof rails, AMG body kit, a huge panoramic sliding glass sunroof, privacy glass from the B-pillar back, auto tailgate, keyless entry and start, rain-sensing wipers, cruise control, LED headlights, and power closing doors.

The power closing doors are a big plus for parents not wanting to disturb kids nodding off in the car, with the soft-touch function drawing the door in for the last few millimetres to an almost silent close.

Inside there’s ambient lighting (64 colours), strategically placed open pore oak wood trim, 13-speaker/590-watt Burmester surround sound audio, electric folding second and third row seats, a head-up display, ‘Mercedes-Benz’ branded illuminated sills, leather seat upholstery (‘Artico’ faux leather on the dash and doors), multi-adjustable electric seats in the front and second row (memory in the front), electrically adjustable steering column, leather-trimmed multi-function steering wheel, and five-zone climate control.

The multi-media system is spectacular, incorporating the twin 12.3-inch digital screens, the central media unit managing nav, digital radio, mobile device connectivity, Apple CarPlay and Android Auto, plus vehicle tracking. There are also remote vehicle status functions (door locking, valet parking, etc), global search (Amazon Alexa, Google Home, Yelp, and Trip Advisor), and a wireless device charging pad.

The basket of goodies can hold its head high in this part of the market, so the value equation stacks up well.

This will be the last time Maserati gets to enjoy a proper Ferrari engine - a 3.8-litre twin-turbo V8 good for 433kW and 730Nm - before it moves to a more electrified future, but it’s certainly going out with a lot of loud bangs.

Deafeningly lovely, the V8, which drives the rear wheels, will shove you to a shouty 100km/h in 4.3 seconds (fast, but not stupidly so, although it feels even quicker) on your way to a very Italian top speed of 326km/h. 

We can report that it exceeds 200km/h with consummate ease and has epic amounts of torque on tap.

There are two engines on offer. The 3.0-litre (M256) in-line six-cylinder turbo-petrol GLS 450 4Matic, and the 2.9-litre (OM656) in-line six-cylinder turbo-diesel GLS 400 d 4Matic.

The all-alloy, twin-scroll single-turbo petrol engine delivers peak power of 270kW from 5500-6100rpm, and maximum torque of 500Nm across a broad plateau from 1600-4500rpm. It also features a 48-volt electrical system driving the ‘EQ Boost’ set-up, able to deliver an extra 16kW/250Nm for short periods. The integrated starter-generator also enables energy recuperation.

Although the all-alloy, twin-turbo diesel features variable valve lift it gives some ground on power, offering up 243kW between 3600-4000rpm, but torque is a solid whack, with 700Nm on tap from 1200-3000rpm. Worth noting, that to minimise emissions this engine features a “selective catalytic reduction converter” in the exhaust, which brings with it the use of an ‘AdBlue’ reducing agent. The separate AdBlue tank has a capacity of 31.6 litres.

The nine-speed auto transmission is the same in both versions, although the diesel has a slightly lower final drive ratio.

Maserati claims a slightly inexact fuel-economy figure of 12.3 to 12.6 litres per 100km, but good luck ever achieving it. The desire to open the taps and really chew some fuel will aways be overwhelming. 

We drove it on a race track and would easily have been exceeding 20 litres per 100km, so our test figure is probably best not spoken about.

Claimed fuel economy for the combined (ADR 81/02 - urban, extra-urban) cycle for the GLS 450 is 9.2L/100km, the more frugal GLS 400 d trimming that to 7.7L/100km. The petrol 450 emits 210g/km of CO2 in the process, the diesel 400d dropping that slightly to 202g/km.

Stop-start is standard, you’re looking at premium unleaded for the 450 GLS, and you’ll need 90 litres of dinosaur juice to full the tank on both models.

We were fortunate enough to drive all three Trofeo models - Ghibli, Levante and Quattroporte - on the track at Sydney Motorsport Park, which really is the only way to fully appreciate vehicles with Ferrari V8 engines, 433kW and rear-wheel drive.

Maserati is keen to point out that other premium brands don’t offer that kind of grunt in their rear-drive cars, indeed most of them are going all-wheel drive, and that level of playfulness is a real USP, it believes.

The thing is, the company also acknowledges that its buyers are older, wiser and wealthier types moving up from the German brands. 

The Trofeo range, in particular, then, is a real niche within a niche. I picture Maserati buyers as being slightly sedate yet stylish. Fans of the nicer things in life, but not flashy, or thrashy, about the cars they drive.

And yet, unlike other Maseratis, the Trofeos are flame-spitting beasts that sound like Game of Thrones dragons. Clearly there are people who like their classy Italian saloons to be insanely fast and track ready. And hooray for them, because as weird as it seems to flog a car like this so hard, the Trofeo Ghibli was well and truly up for it.

It’s also the pick of the litter, being less SUV like than the SUV Levante, and less stupidly long and heavy than the Quattroporte. 

Its shorter wheelbase and lighter weight make it the most fun and light on its feet when being thrown around. We hit an easy 235km/h on the front straight before hurling into Turn One well north of 160km/h, and the Ghibli just held on tight before using its torque to hurl it at the next bend.

It sounds, as I’ve said, amazing, but it’s worth saying again because it’s a real Maserati (or Ferrari, really) advantage of choosing this car.

The brakes are also up to the task of repeated track-hard stops, the steering is lighter and less talkative than a Ferrari perhaps, but still excellent, and the whole Trofeo Ghibli experience is best described, on circuit, as being better than you would possibly imagine.

Out on the road, you don’t have to put up with the firm ride that pressing the Corsa button compels, and the Ghibli reverts to its smooth, cruiser persona - while still looking sporty as hell.

The only letdown is the seats, which are a little on the firm side, but everything else about the cabin is so luxe you almost forgive it. 

While this car makes no sense to me, it obviously excites enough people for Maserati to make a business case, and charge $265,000 for the Trofeo Ghibli. Good luck to them, I say.

Merc claims the GLS 450 will sprint from 0-100km/h in 6.2sec, and the 400 d in 6.3sec. Not hanging around for a 2.5 tonne mothership. But the standout is the 400 d’s torque. All 700Nm of it available from just 1200rpm to 3000rpm; right in the mid-range sweet spot.

The nine-speed auto transmission is smooth yet responsive, with paddles on the wheel for manual shifts when you want to pick the ratio. The combination of effortless grunt and the nine-speeder keeping things on the boil is an impressive one.

Suspension is by double wishbones at the front and multi-links at the rear, and while you can feel the weight in cornering, the standard Airmatic air suspension (which does away with steel springs) is superb in terms of ride comfort and body control.

We took a deep breath and pushed enthusiastically through a series of sweeping corners and the fat (285/45 fr - 325/40 rr) Continental ‘PremiumContact 6’ rubber wrapped around our car’s (optional) 22-inch rims gripped hard.

The ‘4Matic’ all-wheel drive system also seamlessly shuffles torque between the front and rear axles (theoretically up to 100 per cent in each direction).

Merc has put extra focus on body rigidity, the tuning of engine and suspension mounts, and sound absorption, and it shows. The GLS 400 d is beautifully refined on the highway. A neat touch is the car automatically lowering 15mm at motorway speeds or when ‘Sport’ mode is selected.

Steering is electromechanically assisted, and Merc says the front suspension geometry has been revised to minimise vibration through the wheel. And yes, feedback is minimal, but unfortunately so is road feel with only a general connection between your hands on the wheel and the front tyres on the bitumen.

When you’re steering a large beast like this, often with something substantial hitched to the back, you want to know braking performance is up to the task, and the GLS’s big ventilated discs all around deliver reassuringly strong stopping power, with nice, progressive pedal feel to boot.

The seats are adjustable six ways to Sunday, but beyond that they’re comfortable and supportive, even over long stints behind the wheel.

We stayed on the bitumen, because, let’s face it, that’s where this car will spend 99.9 per cent of its time, with the exceptions of the boat ramp, a ski weekend or pony club.

For those special occasions the optional ‘Off-road engineering package’ adds a low-range transfer case, inter-axle locking, hill descent control, and under body armour for more serious work.

At the time of this launch drive the GLS hadn’t been safety assessed by ANCAP, but you could make a small wager, like every penny you have to your name, that it will score a maximum five stars.

The expected active features are there, including ABS, ASR, and ESP, with additional tech including ‘Active Blind-Spot Assist’, ‘Active Brake Assist' (Merc-speak for AEB), active lane keeping and lane change assist, ‘Adaptive Brake’, ‘Attention Assist’, ‘Evasive Steering Assist’, ‘Parktronic’ (active parking assist with 360-degre camera), rear cross-traffic alert, traffic sign assist, and a tyre pressure warning system.

Then, if all that isn’t enough to avoid an impact the GLS is equipped with nine airbags (front and pelvis side for driver and front passenger, side for outer rear seat occupants, full-length curtain, and a driver’s knee bag), an active bonnet to minimise pedestrian injuries, and the ‘Pre-Safe Plus’ (flashes rear hazards to warn drivers closing too quickly from behind, tightening the belts at the same time, and locking the brakes if the GLS is stationary with a rear impact imminent).

Maserati offers a three-year, unlimited kilometre warranty, but you can choose to buy 12-month or two-year warranty extensions, and even a sixth or seventh-year drive-train warranty extension. 

When much, much cheaper Japanese and Korean cars are offering seven and even 10-year warranties, this is so far off the pace that such a fast vehicle should be embarrassed. And if you're buying something Italian, a better, longer warranty would seem like a must. I'd be negotiating at sale for them to throw the longer warranty offer in.

Maserati says servicing for the Ghibli has a "ball park costing of $2700.00 for the first three years of ownership" with a service schedule of every 20,000km or 12 months (whichever occurs first)

Also, "please note that the above is indicative only of the manufacturers basic routine service maintenance schedule and does not include any consumable items such as tyres, brakes etc or additional dealership charges such as environmental levies etc."

The Mercedes-Benz range is covered by a three year/unlimited km warranty, which, like Audi and BMW continues to lag behind the mainstream market where the majority of players are now at five years/unlimited km, with some at seven years.

On the upside, Mercedes-Benz ‘Road Care’ roadside assistance is included in the deal for three years.

Service is scheduled for 12 months/25,000km (whichever comes first) with pricing available on an 'Up-front' or 'Pay-as-you-go' basis.

As a guide, service pricing for the outgoing GLS is set at $2600 per service (up-front) and $3250 (PAYG), a saving of $650 a pop. Fourth and fifth services are also available for pre-purchase ($3550 and $4900).