Skip advert
Advertisement

Mercedes C320 CDI Sport: 13,620 miles

FINAL REPORT: One year on, did V6 diesel pass its toughest test?

Find your Mercedes C-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

Busy, busy, busy! Our Mercedes C-Class has had one of the most hecticyears of any car we’ve ever tested on our long-term fleet. You name it,and our diesel Sport model has done it!

We’ve put it through itshigh-speed paces on a demanding handling track at Mercedes-Benz Worldin Surrey. Then there was the session on a skidpan, testing out theMerc’s excellent safety and stability systems. In addition, it’s beenpart of several high-profile tests, mixing it with fierce new rivalsfrom the likes of BMW and Audi on road and track.

Advertisement - Article continues below

Oh, and it’sattended a photocall at one of the UK’s leading karting circuits, aswell as being serviced by Mercedes’ own European-award-winningmechanics from south London.

Add in all the mileage that our C320CDI has clocked up in motorway and town commuting, plus the many otherdemands of everyday life, and I think you will agree that this is onetest car which has certainly earned its keep.

So, as we prepareto hand back the C-Class after 14 months, what end-of-term summing updoes our sporty Merc get? Well, if this was a school report, we’d giveit a ‘highly promising, but there’s room for improvement’. It looksgood with its lowered suspension and AMG cosmetics, is surprisinglyquick thanks to its powerhouse engine, and delivers highly respectablemid-30mpg economy. But we’d prefer to see a bit more personality inwhat is a bland cabin, while build quality, although better than theprevious model’s, is still some way short of its predecessors from theSeventies and Eighties. We were also disappointed to find a rattlydriver’s seat, squeaky electric folding door mirror and malfunctioninggearshift paddle.

Also, for a top-spec model with all the bellsand whistles, I would have liked a bit more flexibility. I was forcedto borrow another long-termer – a Jaguar XF – to transport aglass-topped coffee table. The British model swallowed this item withreasonable ease, thanks to its folding rear seats. If Jaguar fits thisuseful feature as standard, why can’t Mercedes?

And I guess thatsums up life with the C-Class. There’s plenty to like about it,especially in Sport trim, but with a bit more attention to detail, itcould go from being good to being great.

Second Opinion

Placing a large-capacity diesel in a compact saloon certainly gives the Merc dragster-like acceleration. However, I wish the C320 would stop as effectively as it goes. Admittedly the brakes are supremely effective, but the hi-tech Brake Assist set-up, which actively adjusts pedal pressure as you slow, makes it difficult to come to a halt smoothly.

Dean Gibson

Senior sub-editor

Skip advert
Advertisement

New & used car deals

Mercedes C Class

Mercedes C Class

RRP £34,480Used from £10,137
BMW 3 Series

BMW 3 Series

RRP £35,060Avg. savings £8,640 off RRP*Used from £11,999
Audi A5

Audi A5

RRP £42,760Avg. savings £5,003 off RRP*Used from £14,995
Vauxhall Corsa

Vauxhall Corsa

RRP £19,870Avg. savings £5,301 off RRP*Used from £9,477
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Ford Explorer Van revealed for those seeking more style than a humble Transit
New Ford Explorer Van - front angled

New Ford Explorer Van revealed for those seeking more style than a humble Transit

Explorer Van has arrived as an official conversion from Ford’s team in Dagenham
News
9 Apr 2026
We got it wrong: VW ID.3 and ID.4 will be replaced by “true Volkswagens”
Volkswagen ID.3 - front and rear

We got it wrong: VW ID.3 and ID.4 will be replaced by “true Volkswagens”

The inside story on how the people’s car maker lost touch with the people, before rediscovering its mojo under boss Thomas Schäfer
News
10 Apr 2026
Car Deal of the Day: Tesla Model 3 for £197 a month is the ultimate high fuel price hack
Tesla Model 3 - front cornering

Car Deal of the Day: Tesla Model 3 for £197 a month is the ultimate high fuel price hack

Elon’s Musk’s big-seller is a premium-feeling and efficient electric saloon. It’s our Deal of the Day for April 10
News
10 Apr 2026