Renault Koleos vs Mercedes-Benz X350

What's the difference?

To be fair to Renault, when the second-generation Koleos launched in 2016, it was a competitive offering. The problem is, a bunch of medium SUV rivals have been replaced in that time and some of them - Toyota RAV4, Kia Sportage, Mazda CX-5 and Hyundai Tucson, to name a few - are high-quality offerings with an engaging drive and the latest tech and in-car features.

Unfortunately, that leaves the Koleos towards the rear of the medium SUV pack.

It offers solid value-for-money, handles reasonably well and is still one the best-looking SUVs on the road. But beyond that, the Koleos can’t keep pace with those top-notch rivals.

The V6 X-Class is nice enough to drive on-road and it’s effective enough off-road, but it’s let down by its less-than-impressive interior and those elements combined certainly do not justify such a high price-tag.

Sure, its safety gear is top-notch but the X-Class, even in this V6 guise, feels like a lacklustre attempt at ute greatness, rather than a real effort. 

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An area that Renault has excelled at in the past decade has been exterior design. Under the stewardship of design chief Laurens van den Acker, Renault has transformed from somewhat quirky to modern and sleek.

The Koleos is getting on in years, having arrived in 2016, but it’s still a handsome SUV. A 2020 facelift sharpened its looks further and we reckon it’s one of the best-looking models in the medium-SUV segment.

Piano black inserts around the gear shifter are a nice touch, but the fake carbon-fibre inserts look and feel cheap. It’s all a bit generic.

But the appealing contrast yellow stitching on the seats, gear shifter housing, doors, centre armrest and more breaks up the grey with a little pop of colour.

From the outside, the X-Class looks pretty impressive – it’s chunky and blocky and has a real tough-truck presence.

As mentioned, a fair few of the cool exterior touches are actually paid-for options, and our tester was loaded with these extras and, as a result, looked like a work-or-play ready luxury workhorse.

So, it looks pretty good but, as always, looks can be deceiving and the interior is a very different story.

It might lack the up-to-date styling of those rivals, but the Koleos is practical and spacious inside and great for family duties.

As with the outgoing fourth-generation Nissan X-Trail, the Koleos is one of the larger offerings in the medium SUV segment, and it’s evident when sitting in the front or rear seating row.

Rearward visibility could be better, with a small rear screen and thick C- and D-pillars impeding vision and creating a blind spot.

The front seats are well supported and comfortable and while the driver’s side is power adjustable, the front passenger seat is manually adjustable.

It has a deep central storage bin with a hidden shelf for coins and more. The Koleos features a sizeable glovebox and good bottle storage in the doors, with room for other items.

There’s a weird fixed cup holder in the centre console. It’s not adjustable and there’s room for two very narrow cups and two larger, but not wide, cups. It’s strange. Interior designers could have used that space better.

The CVT's position indicators are located to the left of the shifter and are thus obscured, so you have to rely on the instrument cluster display to confirm what gear you want. 

The steering wheel looks and feels good, but the controls aren’t super logical. There are old school switches in the console to activate the cruise control and speed limiter, but then to adjust and reset the speed you have to hit buttons on the wheel that are not clearly marked. 

The audio controls are housed on a panel-like stalk to the right side of the steering column, which isn’t ideal. These make more sense if they’re housed on the wheel itself. 

Along with a number of cars we have sampled recently, the Koleos has split analogue and digital controls for the air conditioning. Just integrate it in the screen or have traditional controls - not both!

It has a part-digital instrument cluster which is fine, but there’s no head-up display.

Renault’s 'R-Link' multimedia set-up in the Koleos is old, with dated graphics and a small screen, but the menu layout is clear and logical. 

The Koleos lacks wireless phone charging and it makes do with wired Apple CarPlay and Android Auto. The quality of the Bluetooth and CarPlay phone audio is poor and sounds tinny. 

The proximity key that locks and unlocks the vehicle remotely when you walk towards or away from it works every single time. Many of these systems from other brands are patchy at best but the Renault system is faultless. 

The rear seats recline and fold manually 60/40. They’re also surprisingly comfortable. There’s enough bucketing to sink in a bit, and the seats are set high up so kids can easily see out windows.

Space is ample in the second row, with loads of head, leg, toe and knee room, even behind my six-foot (183cm) driving position.

The rear pew has ISOFIX points on the outboard seats, lower air vents, a 12-volt outlet, map pockets, a centre folding armrest with two cupholders, but no USB ports. You have to make do with the two ports at the front.

Open the power tailgate and you’ll find a decent 458-litre boot with all seats in place (maximum 1690L), which is off the pace of its cousin, the Nissan X-Trail (565L), as well as the Toyota RAV4 (580L) and Hyundai Tucson (539L).

A 17-inch steel spare wheel is housed under the boot floor which might explain the lower boot capacity, and there are handy tie-down hooks, a couple of smaller storage nooks and a solid cargo blind. 

I’m not a snob about interiors but if I spent almost $90 grand on a ute I’d expect it to have a very high level of fit and finish inside, plenty of storage options and an overall premium feeling inside.

That’s sorely lacking in here.

From the many hard-plastic surfaces, fake leather, brushed-aluminium sections and sort of half-hearted attempts at three-pointed star styling – such as the vents – no part of the interior looks or feels anything like the premium quality you’d expect to find in a Mercedes-Benz.

As for equipment inside, you get the 7.0-inch floating touchscreen and a few other bits and pieces but there are some glaring omissions: you don’t get a reach-adjustable steering wheel, heated seats, or real leather (our tester has the optional black leather seats fitted at a cost of $1750), you don’t get much in the way of storage anywhere, and you don’t get Apple CarPlay or Android Auto – you don’t even get a driver-side grab handle. All of those sort of mod cons, you get in a ute that costs much less than this X-Class. 

Room and comfort inside is adequate but a long way from unreal for something so pricey.

Driving position is nice, with plenty of vision all-round, but everyone's seats could do with a bit more cushioning and length in the base.

In the grand tradition of all utes, the rear seat is really the realm of young children and, at a stretch, smaller adults, especially for longer trips in the saddle. 

Storage is minimal in the back seat – you don’t even get a drop-down arm-rest with cup-holder.

The 350d Power ($79,415 plus on-road costs*) is the top-spec variant in a two-variant V6 X-Class range; the other variant is the Progressive, which starts from $73,270 plus on-road costs.

Our tester has a 3.0-litre six-cylinder diesel engine a seven-speed automatic transmission and permanent all-wheel drive system – all from Benz. All of those certainly make a refreshing change from the Navara-based four-cylinder model that preceded this X-Class. (Price as tested is $88,618, including GST plus on-roads.)

Standard gear includes steering-wheel paddle shifters, 19-inch alloy wheels (our tester had the optional 18-inch rim design, part of the $1990 Style Pack), body-coloured exterior parts with chrome accents, fog-lamps, dusk-sensing LED High Performance headlamps, ARTICO/DINAMICA seat upholstery, ARTICO dash and door sill covering with contrast stitching, Electric front seats with lumbar support, front foot-well, vanity and door illumination lamps, dashboard trim in aluminium and black roof liner and more.

Safety gear includes seven airbags, AEB, tyre-pressure-monitoring system, Active Lane Keeping Assist, Hill Start Assist, 360 degree surround-view camera, i-Size child seat anchorages and more.

The roof rails and side steps add to the X-Class’s commanding appearance, but those are part of the optional $1990 Style Pack, they are not standard.

The silver styling bar ($1551) and the tray liner ($899) also look cool– but they’re optional extras.

The Koleos shares its powertrain with the X-Trail. That means it uses a Euro 5-rated 2.5-litre four-cylinder, naturally aspirated petrol engine delivering 126kW of power at 6000rpm and 226Nm of torque at 4400rpm.  

It is paired with a CVT and drives with the front, or all four wheels, depending on the grade. 

The Koleos has a braked towing capacity of 2000kg.

The V6 350d Power V6 has a Benz-built 3.0-litre diesel engine (190kW at 3400rpm and 550Nm at 1400rpm-3200rpm), matched to a Benz-built seven-speed auto. It’s a mostly smooth combination and any perceived throttle or turbo lag can be swiftly overcome through switching to one of the more sporty of the five driving modes – one of which is actually called Sport – and making judicious use of the steering-wheel-mounted paddle shifters. The other driving modes are Comfort, Eco, Manual and Off Road and all are designed to adjust throttle input, gear changes and shift times to suit the terrain.

This X-Class has Benz’s 4Matic full-time 4WD system with 4MAT (40:60 torque split for daily driving), 4H (the X-Class’s high range, with 30:70 torque split for looser surfaces) and 4L (aka low range with a 50:50 torque split to suit low-speed 4WDing). The driver uses a simple dial – unfortunately tucked away low down, almost hidden, on the centre console – to switch between these modes.

According to Renault, the combined fuel consumption figure for the FWD Koleos is 8.1 litres per 100 kilometres. The AWD Koleos sips 8.3L.

After a week of mixed urban, freeway and semi-rural driving, we recorded 11.3L/100km.

Koleos uses 91 RON petrol, has a 60-litre fuel tank and emits 188g/km of CO2 emissions.

Fuel consumption is listed as 8.8L/100km (combined). 

We recorded 10.9L/100km on test and that included plenty of low-speed 4WDing. 

The V6 X-Class has a 80-litre fuel tank. 

The drive experience is a mixed bag with some highlights and lowlights.

The ageing 2.5-litre engine is responsive enough from a standing start - it has a 0-100km/h time of 9.5 seconds - but it lacks any real punch and becomes breathless the second you encounter a hill.

It is noisy and revs hard when pushed, with the CVT drone not making for a particularly pleasant aural experience. You’ll hear a fair bit of road and tyre noise in the cabin, too.

The steering is dull and feels quite artificial, but the brakes feel strong.

Unless you’re on a perfectly smooth road surface, the ride is a little busy and the damper tune fails to adequately soften corrugations, potholes and speed bumps. 

It is, however, a more capable handler than expected. The chassis is well sorted, and aside from feeling top heavy with body roll when cornering, it has decent grip and displayed impressive roadholding characteristics, even on a sweeping bend with a loose shoulder surface.

There was a little understeer detected turning into a particularly tight bend.

It can’t match the dynamism of the Kia Sportage or Mazda CX-5, but it does engage the driver to some extent.

Well, this is where the news gets a little bit better.

The V6 is a much better fit for the X-Class than the four-cylinder and it works well with the seven-speed auto, punching the more-than-2190kg ute along – although there is, at times, a substantial delay between foot down and go-time but, as mentioned earlier, that can be overcome by switching to Sport and using the paddle shifters.

It does sit nicely on the road, and ride and handling are generally okay with the X-Class only infrequently revealing some of the skips and jitters you’d expect of an unladen ute.

The coil-spring suspension tends to yield a spongy, comfortable ride rather than the too-firm ride of a ute, especially those of the leaf-spring variety, with nothing onboard.

Steering is pretty sharp and, despite its bulk, the X-Class is reasonably easy to manoeuvre for its size on- and off-road. It has a 12.8m turning circle.

A big plus in the X-Class’s favour is its class-leading suite of active safety tech including AEB, lane keeping assist, as well as that 360-degree view camera and more.

It has seven airbags, and a five-star ANCAP rating.

The Koleos is covered by Renault’s five-year/unlimited kilometre warranty, which is stadatd in the meainstream market, now. 

It is available with a five-year capped-price servicing plan, with each service costing $429, except year four which will set you back $999.

The servicing schedule is every 12 months or 30,000km, whichever occurs first.  

A three-year/200,00km warranty applies to this ute. Service intervals are up to one year/20,000km.