Skip advert
Advertisement

Mercedes C-Class

There's something very special about this C-Class, and it's all to do with what you can't see, rather than the things you can. Under the bonnet, the car has a revolutionary new 3.0-litre powerplant. This holds the key to the future success of virtually every model Mercedes builds.

In this highly competitive sector, the addition of this diesel engine means the C-Class can meet the challenge from BMW and Audi head-on. Although its rivals have newer cars, Mercedes' continuous refinement of the C has kept it in the race for compact executive sales. We are sure that the V6 will be a welcome arrival across the German firm's line-up.

Advertisement - Article continues below

There's something very special about this C-Class, and it's all to do with what you can't see, rather than the things you can. Under the bonnet, the car has a revolutionary new 3.0-litre powerplant. This holds the key to the future success of virtually every model Mercedes builds.

Controversially, the unit is a V6 diesel, and it is the first small-capacity V-formation oil-burner the firm has made. Set to power the forthcoming R-Class luxury MPV and S-Class, as well as future editions of the SL, SLK and E-Class, it's hard to imagine the consequences if the engine isn't up to scratch.

Replacing the impressive straight-six unit which we experienced in the E320 CDI last week (Issue 843), the V6 makes its debut in the new C320 CDI. Aimed at BMW's latest 3-Series and Audi's A4, the new machine promises to be the most powerful and economical car in its class.

Backing these claims is advanced technology which boosts muscle and fuel-sipping ability without harming emissions. The Merc delivers 224bhp and a massive 510Nm, and combined with the optional seven-speed auto box, it gives incredible acceleration.

Maximum torque is available at 1,600rpm, so overtaking requires only the lightest touch of the throttle. Flat-out, the car will hit 0-62mph in 6.9 seconds. Top speed is limited to 155mph, which underlines its sporting saloon credentials.

The performance does not come at the expense of refinement, though. At idle or when cruising, the engine is quiet and smooth. Even when extended, the diesel unit emits a pleasing thrum. Economy also impresses, with acombined figure of around 36mpg giving a competitive blend of performance and frugality.

The new diesel engine is a perfect partner for the Sport package. This gives the car an AMG bodykit as standard, including a discreet rear spoiler, which brings out the best features of the C-Class shape. Colour options are restricted to silver or black. The 17-inch alloy wheels wrapped in wider tyres look better and provide more grip - essential with the amount of torque available.

Sport editions also have a firmer suspension set-up, which improves body control without paying a significant comfort penalty. Despite the bigger wheels, the C-Class retains its good ride quality, but the Sport brings competitive handling.

The interior also benefits from the racy treatment. The three-spoke steering wheel is pleasant to hold, while the silver-faced dials boost the cabin's appeal. Standard sports seats provide good comfort as well as side support. The Sport edition is a welcome addition to the C-Class range, bringing extra equipment for a competitive price. The real star of the show, however, is the diesel engine. This new motor combines genuine performance with refinement and economy, which makes this Mercedes a fine all-rounder.

Skip advert
Advertisement

New & used car deals

Mercedes C Class

Mercedes C Class

RRP £32,830Used from £13,495
BMW 3 Series

BMW 3 Series

RRP £33,570Avg. savings £7,674 off RRP*Used from £10,995
Audi A5

Audi A5

RRP £42,660Avg. savings £5,069 off RRP*Used from £19,569
BMW 5 Series

BMW 5 Series

RRP £52,285Avg. savings £11,775 off RRP*Used from £19,495
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Who needs hybrids? Diesel Skoda breaks world record with 1,759 miles on one tank
Record breaking Skoda Superb fuel run - car driven by Rally driver Miko Marczyk

Who needs hybrids? Diesel Skoda breaks world record with 1,759 miles on one tank

Rally driver Miko Marczyk has driven from Poland to Paris (and back) in a diesel Skoda Superb
News
24 Oct 2025
Chinese hybrid mega test: the truth about PHEV range and efficiency
Chinese hybrid SUV mega test - header image, front static

Chinese hybrid mega test: the truth about PHEV range and efficiency

There’s a tidal wave of Chinese SUVs hitting our shores, but are they any good? We test five new hybrid models to find out
Features
29 Oct 2025
Who needs diesels? Kia PV5 does record-breaking 431 miles with a full load!
Kia PV5 record-breaking - front 3/4

Who needs diesels? Kia PV5 does record-breaking 431 miles with a full load!

Just days after Skoda announced its diesel-car world record, Kia hits back with a fully laden electric van
News
28 Oct 2025