Mercedes-Benz GLS-Class vs Volvo C40

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.

The C40 becomes a compelling option in the electrified small SUV space, offering a premium look and feel, great range and tech inclusions at the price, as well as awesome on-road dynamics.

Its main downsides are the rear seat, which is compromised by its platform and design-led roofline, and the overwhelming power and added traction of the dual-motor makes the single motor less attractive on the value front.

Still, regardless of variant chosen, the C40 looks to offer a stand-out balance of price, range, and performance, against its traditional rivals and newcomers alike.

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.

Volvo has become a brand with a distinctive and consistent design language which embodies the kind of beautiful minimalism normally associated with Scandinavian brands.

I have always liked how Volvo says more with less design elements, with only gentle touches of chrome or gloss black, and a lack of over-the-top sporty pieces avoiding the temptation to over-sell the sporty potential of the brand’s range.

The C40 takes the small SUV formula, well established by its XC40 relation, and gets a bit weird and experimental. It’s slightly lower and has a more coupe-styled rear, with a strongly raked rear window giving it a sportier and more aggressive look than the rest of Volvo’s SUV range.

The styling is sold by an angular spoiler piece running atop the boot, and the rear light clusters have gone all minimalist, constructed of individual pieces rather than a single transparent housing, and they give a nod to the C30 hatchback which this car is the spiritual successor to, by name and nature.

The interior offers up no surprises, sticking to the formula Volvo has established across all of its current models. An effortlessly premium space with, again, a minimalistic dash dominated by the portrait touchscreen, the C40’s premium nature is confirmed by its finely patterned inlays, simple chrome pieces, and abundance of soft-touch surfaces.

The big upright vent fittings with clever rhomboid patterns on their adjustment dials are always a highlight piece of modern Volvos, and the pattern work is continued on the central volume adjust dial and even on the little rotating pieces of the light and wiper stalks. Clever.

Even the software is paired back on the multimedia suite and digital dashboard, with easy to use shortcuts and simple menus which suit the car.

Volvo might turn off some buyers with the more unconventional shape of the C40. But for those looking for a more traditional SUV it also offers the XC40 in the same two variants, and the Polestar 2 caters to those not looking for an SUV at all.

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 C40 is essentially a XC40 with a cropped down roofline, and there are some obvious downsides which this new shape brings.

The front seat throws no surprises, though, offering plenty of room for two adults with a welcome level of adjustability for the seat and wheel. The seats could be more comfortable, though, with a notable lack of padding in the base compared to some luxury (or even non-luxury) rivals. 

I’m a fan of the fabric trim which comes on both grades, bucking the trend of needing to have leather or leather-like trim for a car to feel ‘premium’.

The ample window space up front, including the massive glass roof helps the C40’s cabin feel spacious, but the view out the rear with its aggressive design is all but a very limited letterbox aspect, particularly if the rear seat headrests are in the upright position. 

While some controls are exclusively via touch interface, there is a physical volume dial, and shortcut buttons for the defogger functions. 

Temperature is controlled by touch, however, and the detail settings have some smaller toggle adjustments. Tricky to jab at when you’re on the move.

The digital dash is refreshingly simple, but minimally adjustable, with the choice of either a nifty navigation screen, a blank screen, or trip details being the only options.

Cabin storage is good but not stellar. There are bottle holders and big pockets in the doors, a set of two cupholders in the centre (beats the Polestar 2’s single cupholder), a small tray with a wireless charger under the multimedia screen, and a smallish console armrest box.

The rear seat is where the real problem exists. Unlike the XC40, the C40’s cropped roofline means my head was hard up against the roof (I’m 182cm tall). 

I did have decent knee room behind my own seating position, however the seat comfort in the back still isn’t as good as some rivals. 

The middle position is also compromised, thanks to the raised centre floor piece the C40’s platform needs to facilitate all-wheel drive in its combustion relations.

A bottle holder appears in each door pocket, and in a rare inclusion, there are heated outboard rear seats, adjustable air vents, and USB-C charging ports.

The boot has a quoted capacity of 413 litres with the rear seats up. The floor is comparatively high suggesting a smallish space when loaded with luggage cases, for instance. Stay tuned for a follow-up review so we can see how well it holds our three-piece demo set.

The floor itself has an adjustable, pop-up divider and multiple luggage hooks, making it quite versatile, and there is a cavity beneath which can hold your charging cables as well as the inflator kit in place of a spare wheel.

When it comes to electric vehicles, it’s impossible to consider price alone, as you also have to consider driving range, and the C40 manages to impress on both fronts.

Its refreshingly simplified range consists of just two highly-specified variants, a single motor which starts from $74,990, offering a 434km driving range, or a dual motor starting from $82,490 which offers a 420km driving range.

There’s much more devil in the detail, but to set the scene there are now quite a few direct rivals in this price-bracket, including everything from the Tesla Model Y (from $72,300), Mercedes-Benz EQA (from $78,513), Polestar 2 (from $63,900) and even the Kia Niro which is similarly sized and specified (from $65,300).

Interestingly, the C40 is closely related to the Polestar 2, but has a much higher base starting price. Volvo says this is because it carries a higher standard specification, and offers the C40 without option packs.

Standard gear on the base single motor C40 includes 19-inch alloy wheels, a 9.0-inch portrait multimedia touchscreen (running a Google-based always-online software suite), LED headlights, dual-zone climate control, a fixed panoramic sunroof, electrically adjustable front seats, heated seats for the front two and outboard rear seats, a powered tailgate, as well as keyless entry with touch-free ignition.

Interestingly, Volvo also told us some 90 per cent of customer interest so far has been for the more expensive dual-motor variant, which is particularly impressive for doubling the power output while adding 20-inch alloy wheels, a 360-degree parking suite, premium Harmon Kardon audio, and an alternate interior trim.

Both variants score safety equipment and items which are otherwise part of expensive option packs in the Polestar 2 range. We’ll take a look at the full safety gear later in this review.

Overall, the C40 impresses on the premium car value front compared to rivals, bolstered by solid range and impressive performance.

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.

Great news here, the C40 can be chosen with two powerful layouts, either a front-wheel drive 170kW/330Nm set-up, or a dual-motor all-wheel drive arrangement, able to make use of nearly double the power at 300kW/660Nm. The dual-motor is capable of sprinting from 0-100km/h in just 4.7 seconds.

The front-drive is backed by a 69kWh battery allowing it a 434km range, while the dual motor ups the battery size to 78kWh to allow a 420km driving range.

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.

Surprisingly, energy consumption is quite high for both C40 variants. The single motor is the more efficient of the two, consuming 16.8kWh/100km on the more lenient ADR testing schedule, while the dual motor officially consumes 22.2kWh/100km to the same standard. I saw around 23kWh/100km overall in my short test of the dual-motor variant.

Energy consumption could be better for both, as I have achieved more consistently impressive results particularly from Hyundai and Kia electric cars.

Where the C40 is more impressive though is its charging specs, which are exactly where they need to be for a car this size. On a rapid DC charger, the C40 can charge at a rate of 150kW meaning a 10 - 80 percent charge in 40 minutes for the dual motor, or 32 minutes for the single motor.

On the slower AC standard, the C40 charges at a rate of 11kW. Expect a 10 - 80 percent charge time of around five or six hours on this standard. 

The C40 uses a European-standard Type 2 CCS charging port, although it misses out on the handy two-way charging feature offered by some rivals.

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.

If you’ve driven any kind of XC40 or even a Polestar 2 before, the C40 will offer no surprises. It’s pretty much exactly the same from behind the wheel with a few subtle tweaks.

This is a very good thing. The C40 is quiet, easy to drive, and its electric motor and regen system offer a smooth single-pedal experience.

It is also alarmingly, overwhelmingly, rapid. While its massive set of batteries under the floor make it feel heavy off the line in stop-start traffic, sticking your boot into the accelerator will remove any doubt, particularly in the dual-motor variant, that this Volvo means business.

The dual-motor also has an incredible torque-vectoring system, making it extremely difficult to elicit so much as a squeak from its tyres. It also feels as though torque is distributed quite evenly between its two driven axles, making it feel neither prone to over- or understeer.

This has the effect of making the C40 feel somewhat indestructible in the corners, with absurd levels of grip. 

The same feeling is present in top-spec versions of the Polestar 2, only the feeling of ever-present weight is more noticeable in the higher-riding C40, which can make it unsettling to take corners at the kinds of speeds it is capable of.

The steering tune is interesting. Volvo offers two software-controlled modes, either heavy or standard, and the standard mode is heavy enough. 

Despite its electrical assistance, the wheel does continue to offer some organic feedback, making the C40 a pleasure to steer on countryside roads.

The ride is also surprisingly good, despite massive wheel options. I was impressed how easily the C40 handled most bumps and undulations, communicating little to the cabin. 

The ride can approach its limits with such big wheels and the weight of its batteries, generally these are communicated via unsettling thuds from underneath the car. Regular undulations at higher speeds also had the C40 bouncing around a little.

On the whole, though, the cabin is kept relatively insulated and serene, adding an element of total confidence, similar to that offered by Teslas, whilst offering better ride quality with a softer edge. At higher speed, at least on the 20-inch wheels, road noise does pick up, however.

In terms of electric driving, there is a single adjustable setting for regen. The car either offers a full single pedal mode with maximum regenerative braking to bring the car to a halt with the motor alone, or a ‘standard’ mode which tones the regen down and offers it blended in via the brake pedal. 

Single pedal mode is more efficient. I suggest you stick to it if you want to make the most of this car’s efficiency.

I was surprised to have so few complaints about the C40’s drive experience. This is a balanced and capable EV which is yet another example of how even vehicles which use combustion platforms are improved out of sight by full electrification.

Sticking to its brand promise, Volvo offers the full range of active safety equipment on the C40 regardless of variant.

This includes freeway-speed auto emergency braking, rear auto braking, lane keep assist with lane departure warning, blind spot monitoring with rear cross-traffic alert, and one of the best adaptive cruise control systems on the market.

The only item the single motor misses out on is a 360-degree parking camera, which is exclusive to the dual motor variant.

It is notable how the adaptive cruise control, blind spot monitoring rear cross-traffic alert, and rear auto braking are on the options list for the Polestar 2.

These active systems combined with eight airbags (the standard dual front, side, and curtain, as well as a driver’s knee and centre airbag) make for a five-star ANCAP safety rating to the latest 2022 standards.

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.

The C40 is covered by Volvo’s five year and unlimited kilometre warranty, with a separate eight-year, 160,000km warranty for the battery. There is also eight years of roadside assistance attached.

It is pleasing to see the service intervals for the C40 are long, as they should be for an electric car with so few moving parts, set at two years or 30,000km. 

The first 24 month service is free of charge, and Volvo tells us service pricing after this period will average out to around $100 a year ($200 per visit).