Mercedes-Benz E400 vs Renault Duster

What's the difference?

A convertible that doesn't feel like one when the roof is in place is no easy task to build, but it's one Merc's engineers have pulled off with the E400 4Matic Cabriolet. Effortless power, a tonne of technology and a comfy, leather-wrapped cabin all make Merc's drop-top E-Class a strong proposition.

The Renault Duster looks set to put the French carmaker back on the map here in Australia.

While there will likely be general appeal thanks to its cool looks, it holds special appeal for us off-road enthusiasts as a new, cost-affective option that’s filled to the brim with character and charisma.

While it may not be perfect, it also doesn’t matter. In fact, this makes me like the Duster even more.

The manual AWD feels like the purest and most correct way to experience the Duster as it’s so smile-inducing. However, this isn’t to discredit the automatic FWD version as it’s arguably more liveable day-to-day.

Pick your poison. You’re bound to love it no matter which way you go.

Note: CarsGuide attended this event as a guest of the manufacturer, with accommodation and meals provided.

Elegance. That's the word that springs to mind when you first clamp eyes on the E400 Cabriolet. While the Coupe version has a crouched-over sportiness about its exterior design, the convertible is all about big and boat-like proportions, especially with the fabric roof opened.

Like nearly all drop-tops, the E400 looks best with the cabin open to the elements, and the side profile especially paints a picture of well-heeled wafting, with only the AMG alloys and body styling hinting at the performance on offer under the bonnet.

Inside, expect perfectly executed modern luxury, with soft leather seats, touchpoints that melt under the fingers and a sprinkling of woodgrain trim. All of which feel like old-world luxury, nicely juxtaposed by the huge twin-screen display that dominates the dash.

When you see a Renault Duster parked up or on the road, you’ll instantly be able to tell what it is.

This small SUV is essentially a rebadged Dacia for international markets and the design changes are minimal.

The most noticeable departure is the front grille has ‘Renault’ badging written out instead of a Dacia badge. It’s a departure from any other current Renault model on offer locally and gives the car a tough, unique presence.

There are also Y-shaped LED daytime running lights that look cool and modern.

Depending on the Duster version you opt for, the lower section of the front bumper looks different. All-wheel drive (AWD) versions sit higher to improve the approach angle and ground clearance.

Around the side there’s plenty of plastic cladding to drive home that this is a tough all-terrain machine and not your everyday crossover. I prefer it to the glossy and chrome accents on rival SUVs as it's no-nonsense.

The black body cladding around the wheel arches and along the door sills is recycled and has a fleck throughout it. There’s also a recycled icon near the side mirrors which is a touch too on the nose for my liking.

Towards the rear there are angular haunches that make the Duster look tough, as well as hidden rear door handles on the C-pillar.

At the back there are even more angles that make the Duster stand out. The most obvious is the triangular tail-lights which look funky and cool.

There’s little else to note about the rear design besides a subtle Renault badge and Duster written out on the bottom of the tailgate. I appreciate how clean the rear is because some carmakers can go over the top with badging.

Inside, the Duster defies its budget roots with a high-tech and modern-presenting design. The Y-shaped air vents continue the motif from the headlights, while the 10.1-inch touchscreen multimedia system is mounted prominently on the dash and is smartly tilted towards the driver.

After spending some time behind the wheel, however, you start to notice a lot of the Duster’s finishes inside are hard, scratchy plastics. It’s most noticeable on the dashboard.

Depending on which version you opt for, the door armrests are also finished in hard plastic. The top-spec Techno gets a softer padding on top, however.

While there is a lot of hard plastics, it’s nowhere near as noticeable as a Suzuki Jimny.

It's a two-door, four-seat convertible, so practicality isn't at the very top of its list of strengths.

That said, life is peachy for upfront riders, both of whom will travel in spacious luxury. There are two cupholders hidden beneath a woodgrain cover underneath the climate controls - also home to a power outlet - as well as a clever double-hinged central storage bin that can be opened by either the passenger or driver, and which opens to reveal two USB points.

There's room in the doors for bottles, too, and the entertainment system can be controlled via a touchpad controller mounted above the traditional click wheel - although, to be honest, using it is harder and more time consuming than simply pretending it doesn't exist.

Climbing into the back (and we mean climb - there are no rear doors) is made easier by the fact you can fold and slide the front seats automatically by pulling a lever mounted near the headrest. Once there, though, you'll find space is a little tighter, and you feel weirdly cocooned, owing to the huge raised tunnel that runs through the middle of the cabin, and the low roof line.

There are two cupholders that live in the space where the middle seat would normally go, and there's a little bottle-holder cubby to the left of both backseat riders. There are air vents back there, too, but no temperature controls.

The front doors are huge and really very heavy, requiring considerable heft to open them.

The boot space is predictably a little limited, with 385 litres on offer. There's also a little flip-down separator, which shows you how much room the roof will need to come down, reducing boot space to 310 litres. Speaking of which, the soft-top can be lowered in just 20 seconds, and at speeds up to 50km/h.

One practicality quirk, though. The front (and only) doors are huge and really very heavy, requiring considerable heft to open them, especially if you're parked on a slight angle. Honestly, I was reduced to kind of pushing them open with my foot at times.

In terms of practicality, this is one small SUV that punches above its weight.

Up front both the seats are manually adjustable, which is expected at this price point. There’s nothing wrong with this as they still allow you to find your desired seating position.

The entry-level Evolution comes with cloth upholstery which feels nice to touch and allows for decent breathability, whereas the top-spec Techno has a premium textile that almost feels like neoprene (wetsuit material). I’m thankful there’s no leather upholstery option in this car because it wouldn’t suit its character.

Ahead of the driver is a leather-wrapped steering wheel which feels more premium than you’d expect. It feels lovely in the hand and is complimented by the squared-off shape.

Another reason why I like this steering wheel is it offers a generous amount of tilt and reach adjustment. This means people of all different sizes and statures will be able to find a comfortable driving position.

There’s a nice smattering of physical buttons on the steering wheel for critical things like the cruise control and changing the content on the digital instrument cluster, though if you want to change the volume or track, you need to interact with the stubby stalk behind the steering wheel.

This is a classic Renault quirk that’s been in a number of its cars for years. It takes a bit to get your head around, but once you do it’s second nature.

Behind the steering wheel is a 7.0-inch digital instrument cluster which looks a little small in its housing. Clear analogue dials for the rev counter and speedometer would have been better and likely more timeless.

As standard, however, there’s a big digital speedometer readout that’s easy to read, as well as a few layout styles and informative pages to cycle through.

I wish the digital rev counter was featured on more of the page layouts and it also had more numbers denoting the rev counter markings, rather than simple lines. This is particularly annoying in the manual.

Moving across, the 10.1-inch touchscreen multimedia system is clear and bright. It also helps that the native interface is simple and easy to navigate.

There’s wireless Apple CarPlay and Android Auto across the line-up which is fantastic to see and almost expected now. Complimenting this is a standard wireless phone charger at the base of the centre tunnel.

Additionally, if you opt for the Techno, you get a phone mount on the dashboard. I still haven’t decided whether this is helpful or not given there’s already wireless phone mirroring and the phone mount doesn’t provide charge as standard.

Unlike many newer cars, the Duster retains plenty of physical switchgear up front so key functions like the dual-zone climate control and drive modes.

In terms of storage up front there are two cupholders, a handy shelf for stowing things above the wireless charger, a big centre console box, as well as a deep glove box.

Moving to the second row there’s plenty of headroom, though legroom is minimal for adults above (183cm) six feet. You have to remember this is a small SUV so it’s actually not too bad.

The second-row bench seat is laid back, allowing you to get comfortable on longer drives. Two adults can easily fit back there, though pushing it to three would make it squishy.

Second-row amenities include air vents and two USB-C ports. There’s also a special connector on the back of the centre console which allows you to fit a wide range of optional 'YouClip' accessories. These include a cupholder, light or hook.

In the same vein, you can also add a phone or tablet holder to the back of the front-seat headrest. The configurability is to your heart’s content.

A downside of the second row, however, is there’s no fold-down centre armrest. This also means there are no rear cupholders as standard, which is disappointing.

At the back the entire Duster line-up has a manual tailgate, which is fine for the price point.

The boot space itself is decent as there’s no load lip, but if you’re wanting a larger space overall, it’s best to opt for the front-wheel drive (FWD) versions as they have 472L with the rear seats upright. AWD versions, on the other hand, have 358L with the rear seats up.

The Techno 4x2 in particular has a two-tier floor which allows you to stow things underneath the main boot floor, or you can create a partition to stop things moving around.

Boot-related amenities include a light, hooks and a 12V socket. There are also extra YouClip points, including one on the tailgate. This allows you to add extra lights or hooks.

As standard, all Duster variants get a full-size spare wheel, which is fantastic given this type of vehicle may be spending a lot of time out on the open road.

In Australia the 2026 Renault Duster is being offered in two trim levels with two powertrain options.

Pricing starts at $31,990, before on-road costs, for the Duster Evolution 4x2 automatic and extends to $37,990, before on-roads, for the Duster Techno 4x4 manual.

This is competitive pricing for the small SUV segment, especially when you consider the rugged and considerably smaller Suzuki Jimny costs similar.

As standard the Duster Evolution comes with 17-inch alloy wheels, a 7.0-inch digital instrument cluster, a 10.1-inch touchscreen multimedia system with wireless Apple CarPlay and Android Auto, a wireless charger, dual-zone climate control, an electric park brake, as well as black and grey cloth upholstery.

Stepping up to the Techno gets you larger 18-inch alloy wheels, front fog lights, privacy glass, modular roof rails, keyless entry and walk-away locking, push-button start, a smartphone holder, as well as black and grey premium textile upholstery.

While the entire Duster line-up has LED low-beam headlights, the high-beams are only halogen, which is a disappointing cost-cutting move.

Despite this, there’s still plenty of standard equipment, even from the base Evolution trim.

If that’s not enough, however, you can further personalise your Duster with a wide range of optional accessories. There are clip-on cupholders, lights, hooks and tablet holders inside, as well as Rhino Rack and Thule accessories outside.

It's a fabulous engine, this twin-turbocharged V6 - even if it doesn't feel quite so lively in Cabriolet form as it does in the hardtop equivalents.

The 3.0-litre unit produces 245kW/480Nm, sending it to all four wheels via a nine-speed automatic transmission, linked to the standard 4Matic all-wheel drive system.

As noted earlier, the Renault Duster is offered with two different powertrains.

The most affordable option is a 1.3-litre four-cylinder turbo-petrol engine which produces 113kW of power and 270Nm of torque.

This is mated to a seven-speed dual-clutch automatic transmission with drive sent to the front wheels only. It’s worth noting this is the same powertrain that propels the Renault Arkana and Captur, as well as certain entry-level Mercedes-Benz models.

Renault claims this version of the Duster can do the 0-100km/h sprint in 9.2 seconds.

The second powertrain option is a 1.2-litre three-cylinder turbo-petrol with 48V mild-hybrid assistance which produces 96kW and 230Nm.

This is less powerful than the four-cylinder petrol but it’s mated to a six-speed manual gearbox with drive sent through an all-wheel drive system.

Renault claims the AWD Duster can do the 0-100km/h sprint in 11 seconds. That’s not very fast at all…

Claimed top speed for the entire Duster line-up in Australia is 200km/h.

Unfortunately there’s no automatic AWD Duster available globally yet so if you want to maximise your all-terrain capability, you’ll need to opt for this mild-hybrid manual powertrain option.

All versions of the Renault Duster have a braked towing capacity of 1500kg, though it’s worth noting the towball download limit is only 75kg. This could prove to be a hassle if you’ve got a towball-mounted bike rack and you put a hefty e-bike on it as this could easily send it over this threshold.

Mercedes claims 7.4L/100km on the combined cycle (but you can expect to be pushing nine litres in real-world conditions), with emissions pegged at 170g per kilometre of CO2.

The 66-litre tank will only accepts 95RON fuel.

Renault claims the four-cylinder, FWD Duster consumes 6.5L/100km, whereas the three-cylinder, AWD is claimed to consume 5.7L/100km, both on the combined (urban/extra-urban) cycle (ADR 81/02).

The former has a 50L fuel tank and requires a minimum of 91 RON regular unleaded petrol, while the latter has a slightly larger 55L fuel tank but requires higher quality 95 RON premium unleaded petrol.

We didn’t get a chance to properly get as-tested fuel consumption figures during this initial first drive, but the FWD Duster has a theoretical range of 770km and the AWD Duster extends that to 965km.

Sure, the E400 Cabriolet can drive itself, but we’re equally pleased to note that it’s still a lot more fun handling the steering duties yourself.

And that is mostly due to that fabulous engine; quiet and effortless at city speeds, rorty and enthusiastic at pace, and genuinely angry with the drive setting switched to their most hardcore Sport+ mode.

We’ve already spent time in the sedan version, and while this Cabriolet is heavier (1935kg vs 1820kg) and slightly slower to 100km/h (5.5sec vs 5.2sec) it doesn’t immediately feel it behind the wheel, with a similar and satisfying lurch into the future when you plant your foot.

But hard charging is not what this car is about, and the E 400 is at its peachy best when rolling about the city or the ‘burbs with the top down, and the warm summer air washing through the cabin.

In its normal drive settings, the steering is light but engaged, and the ride on offer from the standard air suspension is outstanding, cosseting the cabin from all but the very worst road imperfections, while the torque from the V6 serves up effortless, unobtrusive acceleration.

With the roof up, Merc’s designers have done a stellar job of hiding the fact this thing is a convertible at all. It’s a solid-feeling cabin with the fabric roof fastened, and the cabin is quiet and free from wind noise.

Depending on which version of the Duster you opt for, they’re rather different beasts. The most ‘normal’ version is the FWD auto.

This powertrain combination with the 1.3-litre turbo four-cylinder and seven-speed dual-clutch automatic immediately feels familiar if you’ve driven a current Arkana or Captur.

There’s enough power underfoot to get moving along briskly, though you won’t be breaking the land speed record anytime soon. There’s also a wealth of torque allowing the engine to feel like it’s not working hard.

It’s fun to listen to the turbo spool up during moderate acceleration, though the four-cylinder engine note doesn’t necessarily inspire you.

For the most part the seven-speed dual-clutch operates smoothly, though it can get caught out during low-speed manoeuvres. It’s also clearly tuned for economy as it likes to shift up to the next gear quickly.

The AWD Duster, on the other hand, is where the fun and true character of this quirky SUV shines. With the three-cylinder turbocharged petrol engine and the manual transmission, it’s far from the quickest vehicle out there. It’s faster than a Suzuki Jimny, though.

While progress may be relatively docile, the gruff three-cylinder engine note is addictive. There’s also plenty of torque on tap, so you don’t need to downshift to get things moving.

The manual selector feels chunky in the hand and the clutch biting point is easy to get your head around. Unlike some petrol-powered manual cars, this one’s hard to stall. Even if you do, once you put your foot back on the clutch, the car restarts automatically.

Where the AWD Duster gains extra character points is by having a 48V mild-hybrid system. It doesn’t do anything to drastically alter the driving experience apart from adding a tiny boost to acceleration and extending and smoothing the engine idle stop-start system.

During our launch drive program we had the opportunity to drive the front- and AWD Duster off the beaten path, as well. While you’d expect the latter to be good, the former surprised me in terms of just how far it could go. It’s clear the platform is set up for all-terrain capability, no matter the powertrain configuration.

For added peace of mind off-road, however, the AWD has a higher ground clearance (212mm vs 174mm), as well as a range of terrain modes, including a ‘Lock’ setting that splits torque evenly between the front and rear axles.

The AWD Duster is pretty unstoppable off-road. It’s not quite a Jimny tamer in terms of outright off-road-ability, but I estimate the Duster could do 80 per cent of what a Jimny could do.

While the Duster mightn’t be an outright off-road beast, it well and truly makes it up with on-road finesse. The most noticeable element is the suspension. It feels supple, balanced and controlled no matter the surface. Sure there’s some body roll in the bends, but this isn’t trying to be a sports car.

There are some differences between the front- and AWD Duster when it comes to the rear suspension. The former has a torsion beam set-up, while the latter has a multi-link arrangement. In practice, however, it’s hard to tell any difference between the two.

The steering is direct and on the lighter side which helps with manoeuvrability, though there’s a general lack of feel. It’s considerably better than the Jimny’s vague steering, though.

In terms of parking the Duster has a tight turning circle. Rear parking sensors and a reversing camera are standard in the Evolution, though the Techno adds front and side parking sensors, as well as a surround-view camera.

The camera systems in this car are poor. They’re mushy-looking with poor resolution and horrible colour balance. It’d be great to see higher quality units installed, especially because the multimedia screen is so high-resolution.

Forward visibility from the driver’s seat is fantastic through the rather upright windscreen. You also get a good view of the muscular-looking bonnet.

Side visibility is great, which helps make checking blind spots easier, plus the rear envelope is sizable.

The safety systems in this car are largely easy to live with, though the lane-keep assist can grab at the steering wheel a bit too much on roads with tight lanes or poor lane markings.

Thankfully there’s a button on the dashboard that turns this, and any other safety system that annoys you off, so you can keep on motoring without safety nanny intrusion.

Lastly in terms of noise, vibration and harshness (NVH), the Duster is impressively quiet at low speeds. You can even travel at 60-80km/h along gravel roads and in the cabin it sounds like you’re on a sealed surface.

Once you get out on the open road at highway speeds there’s noticeable road and wind noise, but I’ve experienced much worse in small SUV rivals at a similar price point.

The Renault Duster hasn’t been crash-tested by ANCAP just yet, though the Dacia Duster did receive a three- out of five-star Euro NCAP rating in 2024.

As standard there are six airbags, autonomous emergency braking, lane departure warning, lane-keep assist, driver attention alert, traffic sign recognition, rear parking sensors and a reversing camera.

Stepping up to the Techno gets you blind-spot monitoring, front and side parking sensors as well as a surround-view camera.

Notably absent from the entire line-up is rear cross-traffic alert, as well as adaptive cruise control. There’s only standard cruise control on offer.

There are two ISOFIX points, as well as three top-tether child seat anchorage points on the rear seat bench.

Expect the usual three-year, unlimited-kilometre warranty, with service intervals pegged at 12 months or 25,000km. Mercedes' capped-price servicing scheme limits maintenance costs to $2280 for the first three years of ownership.

The Renault Duster is covered by a five-year, unlimited-kilometre warranty with five years of roadside assistance.

Logbook servicing is required every 12 months or 30,000km, which is mainstream for the commercial vehicle segment, but incredibly rare for a regular car. These long intervals are handy for those who travel long distances.

The first five services have capped pricing. All up these cost $2685 for FWD Dusters or $2475 for AWD Dusters. These average out to $537 and $495, respectively, per service.

Alternatively, you can purchase a five-year, pre-paid service plan for $2150 for FWD Dusters or $2100 for AWD Dusters. This is a saving of over $500, depending on the version, compared to pay-as-you-go.