Which? uses cookies to improve our sites and by continuing you agree to our cookies policy

Fast, efficient new Mercedes C250 CDI

BlueEfficiency C-class won’t stint on luxury

Mercedes C250 CDI

High-powered C-class diesel is also more frugal

Many manufacturers cut back on equipment and luxury when producing ‘green’ versions of their cars. Not Mercedes-Benz.

This week the German carmaker unveiled a new ‘BlueEfficiency’ C-class, the C250 CDI. It uses an all-new 2.2-litre turbodiesel engine, which claims official fuel economy of 54.3mpg, while emitting just 138g/km CO2.

This is despite the C250 CDI being based on Mercedes’ high-level ‘Avantgarde’ spec, and loaded with equipment.

Twin turbo

Mercedes BlueEfficiency badge

BlueEfficiency Mercs will maintain the commitment to luxury

However, what makes this new Mercedes doubly impressive is that it’s no slouch in the performance department, either.

It use twin sequential turbos – which means a small high-pressure turbo provides the initial throttle response, gradually handing over to a larger low-pressure turbo as the revs build – and the latest common rail direct injection technology.

And the result is a power output of 201bhp and an enormous amount of pulling power – and all in a so-called eco model. Top speed is 155mph and the 0-62mph sprint takes 7.0 seconds.

Other green tweaks

Other BlueEfficiency modifications include low-rolling resistance (their lower friction should improve fuel economy), longer gearing, improved aerodynamics, more accurate fuel consumption information, and a gearshift indicator – all becoming commonplace on the latest .

Initially available in Europe only in a limited run of 5,000 ‘Prime Editions’, the C250 CDI arrives in the UK next year. Expect to pay around £32,000.

Lower powered and even more economical versions of the new engine will then follow, and make their way into other Mercedes models.

All the latest car news

For daily consumer news, subscribe to the here. If you have an older web browser you may need to copy and paste this link into your newsreader: https://www.which.co.uk/feeds/reviews/news.xml . Find out more about RSS in the Which? guide to news feeds.

To be kept in the loop on all the manufacturer offers and great car deals we spot each week, sign up for our Which? Car email – delivered to your inbox every Friday, and including all our latest news and first drive reviews, too.

Back to top