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

Qashqai

2022 Nissan

Qashqai

29,816 milesManualPetrol1.3L

Cash £14,360
View Qashqai
Kona Hybrid

2023 Hyundai

Kona Hybrid

56,950 milesAutomaticPetrol1.6L

Cash £13,695
View Kona Hybrid
Yaris

2019 Toyota

Yaris

31,650 milesManualPetrol1.5L

Cash £8,595
View Yaris
Q3

2018 Audi

Q3

107,920 milesAutomaticPetrol1.4L

Cash £9,295
View Q3

• 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

Kia Sportage

Kia Sportage

RRP £28,085Avg. savings £3,409 off RRP*Used from £10,995
MG MG4

MG MG4

RRP £27,005Avg. savings £5,225 off RRP*Used from £10,840
Renault Clio

Renault Clio

RRP £16,275Avg. savings £2,564 off RRP*Used from £6,795
Nissan Qashqai

Nissan Qashqai

RRP £27,435Avg. savings £5,987 off RRP*Used from £8,995
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Car Deal of the Day: Volvo XC60 Black Edition offers mean looks for mighty value
Volvo XC60 - front cornering

Car Deal of the Day: Volvo XC60 Black Edition offers mean looks for mighty value

Family-favourite Volvo XC60 is looking like tremendous value for money right now. It’s our Deal of the Day for 31 July.
News
31 Jul 2026
Vauxhall Corsa vs SEAT Ibiza: Spanish supermini takes on British favourite
Vauxhall Corsa vs SEAT Ibiza - header

Vauxhall Corsa vs SEAT Ibiza: Spanish supermini takes on British favourite

Updates have kept the long-running SEAT Ibiza and Vauxhall Corsa superminis feeling fresh. But which is the better buy?
Car group tests
1 Aug 2026
Dacia Duster and Dacia Bigster Hybrid 150 4x4: step-up from 2WD costs just £1k more
Dacia Bigster AWD - front

Dacia Duster and Dacia Bigster Hybrid 150 4x4: step-up from 2WD costs just £1k more

All-wheel drive hybrid power extends the appeal of the popular Dacia Duster and Dacia Bigster even further
News
3 Aug 2026