Skip advert
Advertisement

New Mercedes CLS 350 d 2018 review

The Mercedes CLS 350 d is the entry-level model in the range, but it offers a great combination of price, speed and refinement

Find your Mercedes CLS
Compare deals from trusted partners on this car and previous models.
Or are you looking to sell your car?
Value my car
Fast, no-nonsense car selling
Value my car

This entry-level 350 d is our pick of the new CLS range. It’s plenty quick enough, supremely refined, and cheaper than the flashier 400 d. It’ll waft its way to motorway speeds with ease, while the sumptuous cabin is comfortable and laden with technology. Unless the bigger badge is your be-all and end-all, this is the CLS we’d have.

Advertisement - Article continues below

Not content filling niche upon niche, Mercedes is now bolstering its sleek CLS line-up with extra engine options. We’ve already tried the flagship diesel and mild-hybrid CLS 450 petrol, and there’s an electrified AMG version on the way, too.

Now it’s the turn of the cheapest diesel you can buy: the 350 d 4MATIC. Yet, with 282bhp and a whopping 600Nm of torque, it’s far from the weak link in the range. In fact, we’d argue it’s all the CLS you’d ever need.

New Mercedes CLS 400 d review

Surging to 62mph in just 5.7 seconds, the smooth and refined CLS 350 d is remarkably quick. Its standard-fit nine-speed auto box appears better resolved than some of Merc’s early efforts, too, continually selecting the right gear at the right time. Plant your foot at any speed and this CLS has plenty of torque in reserve for spontaneous overtakes.

The steering isn’t all that responsive, but while that may mean it’s not enormous fun on a twisting B-road, it’s incredibly relaxing to drive on the motorway. The cabin is hushed – even on the standard-fit 19-inch alloy wheels – and the air-sprung ride is little short of sublime. Every version gets 4MATIC all-wheel drive, too, allowing you to deploy every last ounce of power as and when you need it.

Advertisement - Article continues below
Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

ZS

2023 MG

ZS

11,062 milesManualPetrol1.5L

Cash £13,150
View ZS
XCeed

2022 Kia

XCeed

28,438 milesAutomaticPetrol1.5L

Cash £14,870
View XCeed
Cooper Electric

2023 MINI

Cooper Electric

33,691 milesAutomaticElectric

Cash £12,400
View Cooper Electric
A3 Saloon

2024 Audi

A3 Saloon

25,119 milesManualPetrol1.0L

Cash £18,497
View A3 Saloon

• New Mercedes CLS 450 review

Ok, so it’s not as fast as the 400 d, but it’s almost £3,000 cheaper – and fractionally more economical, too. The quoted CO2 emissions are identical, however, so company car drivers able to splash out on the quicker car shouldn’t see too much of a Benefit in Kind tax hike.

Of course, as the CLS is only available in AMG Line trim – regardless of engine choice – the cabin is laden with all the same kit. The fantastic dual-screen 12.3-inch infotainment system not only looks great, it works well, too. Admittedly, it’s not quite as intuitive as BMW’s iDrive system, but the touchpad control is operable in various ways and on the whole is easy to use.

There’s 64-colour ambient lighting, electro-pneumatic four-way lumber support for the carefully contoured leather seats, and brushed aluminium pedals. Despite being labelled a four-door coupe, room in the back is adequate, and the seats fold for longer loads, as well. 

Other standard features include Merc’s Active Parking Assist system with a built-in reversing camera, and Agility Control adaptive damping. The Multibeam intelligent headlights are a particular highlight, too. Opt for the Premium Plus package and you’ll add a Burmester stereo, electric sliding sunroof and an online media system.

Skip advert
Advertisement
Richard Ingram deputy editor Auto Express
Deputy editor

Richard has been part of the team for over a decade. During this time he has covered a huge amount of news and reviews for Auto Express, as well as being the face of Carbuyer and DrivingElectric on Youtube. In his current role as deputy editor, he is now responsible for keeping our content flowing and managing our team of talented writers.

New & used car deals

Volkswagen Polo

Volkswagen Polo

RRP £15,270Avg. savings £2,398 off RRP*Used from £7,500
Volkswagen Golf

Volkswagen Golf

RRP £25,250Avg. savings £2,419 off RRP*Used from £10,995
Toyota Yaris Cross
Dacia Spring

Dacia Spring

RRP £11,990Avg. savings £703 off RRP*Used from £10,000
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Dodge Charger 2026 review: real US muscle makes some UK sense
Dodge Charger Sixpack - front cornering

New Dodge Charger 2026 review: real US muscle makes some UK sense

The Dodge Charger is both characterful and practical, but it's likely to be a rare sight on UK roads.
Road tests
17 Sep 2026
New Mercedes C-Class Electric gets a bittersweet range boost
Alastair Crooks with the Mercedes C-Class Electric

New Mercedes C-Class Electric gets a bittersweet range boost

New model has launched in Germany but won’t be coming to the UK
News
17 Sep 2026
Car Deal of the Day: A fully-loaded Range Rover Evoque is now just £455 a month
Range Rover Evoque P300e Autobiography - full width front

Car Deal of the Day: A fully-loaded Range Rover Evoque is now just £455 a month

Not often do we feature a Range Rover, but today is an exception. The top-spec Evoque is our Deal of the Day for 18 September.
News
18 Sep 2026