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 £35,510Used from £6,150
Audi A5

Audi A5

RRP £42,760Avg. savings £4,082 off RRP*Used from £18,110
BMW 3 Series

BMW 3 Series

RRP £34,280Avg. savings £8,952 off RRP*Used from £9,900
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

Car Deal of the Day: Skoda Octavia Estate is a cavernous family car for £210 a month
Skoda Octavia Estate vRS - front cornering

Car Deal of the Day: Skoda Octavia Estate is a cavernous family car for £210 a month

Not many cars tick all the boxes, but the Skoda Octavia Estate is one of those. It’s our Deal of the Day for 3 July.
News
3 Jul 2026
Car Deal of the Day: Lofty Toyota bZ4X Touring comes with a low price
Toyota bZ4X Touring - front cornering

Car Deal of the Day: Lofty Toyota bZ4X Touring comes with a low price

Toyota has continued to improve the bZ4X, and the new Touring version is probably the best of the lot. It’s our Deal of the Day for 2 July.
News
2 Jul 2026
Death of the manual car: shock new data shows record low demand
Manual gearbox

Death of the manual car: shock new data shows record low demand

Just 7.9 per cent of Marketplace enquiries so far in 2026 have been for manual cars, with experts suggesting the transmission could be dead by 2030
News
3 Jul 2026