Skip advert
Advertisement

Mercedes E400 Cabriolet

We drive the new range-topping Mercedes E-Class Cabriolet, ahead of its UK arrival in October

Find your Mercedes E-Class
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

Mercedes has focused on all the right areas for this facelift. The E-Class Cabriolet was already one of the most comfortable and relaxing convertibles out there, and now it has been improved in all the ways it had begun to lag behind the competition. The updated styling makes it look completely fresh, while the new technology and a few updated engines improve its safety, ease-of-use and performance. One of the best four-seater cabriolets on the market has just got a little better.

Advertisement - Article continues below

The Mercedes E-Class Cabriolet has been facelifted, borrowing some of the updates from the recently tweaked saloon and estate variants. There’s also a new E400 variant, which replaces the E500 at the top of the UK line-up, and Auto Express has been behind the wheel.

The changes are already familiar from the more traditional members of the E-Class family, such as the more cohesive headlight design, the new single-bar grille and the LED rear lights. Importantly, the pontoon-style rear wheelarches remain, whereas they had been smoothed out for the saloon and estate.

The interior tweaks are even more subtle, with the gear selector moving from the centre console to a steering wheel-mounted stalk, some new brushed metal finishes and updated dials.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

A-Class

2012 Mercedes

A-Class

38,000 milesAutomaticPetrol1.5L

Cash £5,499
View A-Class
TRANSIT CUSTOM

2027 FORD

TRANSIT CUSTOM

29,300 milesAutomaticDiesel2.0L

Cash £29,940
View TRANSIT CUSTOM
TRANSIT CUSTOM

2021 FORD

TRANSIT CUSTOM

50,000 milesManualDiesel2.0L

Cash £23,990
View TRANSIT CUSTOM
Q5

2020 Audi

Q5

60,564 milesAutomaticPetrol2.0L

Cash £19,640
View Q5

The Cabriolet’s top-down credentials are now better than ever thanks to the automatic AirCap, which drivers used to have to raise and lower manually. Now it’ll go up at 25mph, and almost completely stops buffeting even when you're driving at 60mph.

This new 328bhp engine is fantastic, too, although the big seller is still expected to be the E350 CDI V6 diesel. The E400 may be a tenth of a second slower from 0-62mph (with a time of 5.3 seconds) but it genuinely feels every bit as quick as the E500 it replaces. It delivers power just as consistently, too, despite the fact it’s turbocharged rather than naturally-aspirated.

Advertisement - Article continues below

That means good news for running costs, which have now improved from 31.0mpg in the E500 to 35.8mpg, with CO2 emissions down from 213g/km to 185g/km.

It’s also an engine that fits with the E-Class Cabriolet’s character as a relaxed cruiser. It’s quiet and smooth, which helps complement the smooth ride and top-notch refinement but – as ever with this car – driving thrills aren’t top of the list.

There have been big changes to the amount of technology on offer, with a new Distronic Plus system able to steer, accelerate and brake you through traffic jams and a 360-degree camera to help parking. As standard there’s a Pre-Safe Plus system that can detect a rear end collision and apply the brakes hard to stop you ricocheting in to the car in front.

The new E-Class Cabriolet is available in two trim levels: SE and AMG Sport. Going for an entry-level SE model will cost an extra £2,095 over the old car, while going for AMG Sport means paying £2,435 more than you would have done for the old Sport model.

Those premiums may seem like a lot but Mercedes claims you get extra standard kit in the facelifted car, which actually adds up to more than the premium you’re paying. With that in mind, if you’re after one of the most comfortable, refined and hi-tech cabriolets on the market, then the E-Class is better than ever.

Skip advert
Advertisement

New & used car deals

Skoda Kodiaq

Skoda Kodiaq

RRP £39,045Avg. savings £4,963 off RRP*Used from £10,490
MG MG4

MG MG4

RRP £27,005Avg. savings £3,637 off RRP*Used from £10,895
Volkswagen Polo

Volkswagen Polo

RRP £15,270Avg. savings £2,398 off RRP*Used from £6,460
Toyota Yaris Cross
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Ford Focus: full details on the iconic name’s SUV return
Ford Focus exclusive image

New Ford Focus: full details on the iconic name’s SUV return

An all-new Ford Focus is set to make a comeback and our exclusive image previews how it could look
News
10 Aug 2026
Long-term test: Volvo EX90 Ultra Twin Motor Performance
Volvo EX90 Ultra Twin Motor Performance - family header

Long-term test: Volvo EX90 Ultra Twin Motor Performance

First report: Range-topping version of flagship SUV joins our fleet and is fast becoming a family favourite
Long-term tests
9 Aug 2026
New Hyundai Ioniq 9 Calligraphy Black Ink has a price to write home about
New Hyundai Ioniq 9 Calligraphy Black Ink - front

New Hyundai Ioniq 9 Calligraphy Black Ink has a price to write home about

Design tweaks inside and out give electric SUV a menacing look, taking Hyundai into rarefied pricing territory
News
7 Aug 2026