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

Fabia Estate

2017 Skoda

Fabia Estate

48,420 milesManualPetrol1.2L

Cash £9,497
View Fabia Estate
Cooper Electric

2021 MINI

Cooper Electric

29,368 milesAutomaticElectric

Cash £11,100
View Cooper Electric
Corolla Touring Sports

2021 Toyota

Corolla Touring Sports

49,616 milesAutomaticPetrol1.8L

Cash £16,600
View Corolla Touring Sports
2008

2017 Peugeot

2008

79,550 milesManualDiesel1.6L

Cash £4,995
View 2008

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

Hyundai Tucson

Hyundai Tucson

RRP £29,820Avg. savings £6,182 off RRP*Used from £12,295
Audi A3

Audi A3

RRP £26,295Avg. savings £4,213 off RRP*Used from £10,995
Volkswagen Golf

Volkswagen Golf

RRP £25,235Avg. savings £2,502 off RRP*Used from £10,695
Nissan Juke

Nissan Juke

RRP £19,785Avg. savings £4,644 off RRP*Used from £9,295
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Toyota Yaris in-line for major rethink to try and please hybrid and EV buyers
Toyota Yaris - front (watermarked)

New Toyota Yaris in-line for major rethink to try and please hybrid and EV buyers

The Mk5 Toyota Yaris will be offered with internal-combustion, hybrid and electric powertrains to suit buyers’ needs, and our exclusive images preview…
News
16 Feb 2026
It’s time to be clear and honest about battery health on used electric cars
Opinion - used EV battery health

It’s time to be clear and honest about battery health on used electric cars

Paul Barker explains why sellers need to be clearer about battery degradation in order to give used EV buyers a confidence boost
Opinion
15 Feb 2026
Electric cars are more expensive to buy and insure, and will depreciate faster
Opinion - EVs

Electric cars are more expensive to buy and insure, and will depreciate faster

Mike Rutherford is not surprised to see the electric car market slowing down in the UK
Opinion
15 Feb 2026