Skip advert
Advertisement

378bhp Mercedes B-Class revealed

Mercedes-Benz B-Class MPV gains rear wheel drive and 378bhp. Meet the monster B55 V8

Mercedes has unveiled a 378bhp B-Class. It’s the bright idea of a group of Daimler apprentices, apparently, who thought shoehorning a stocky V8 engine into the front of a mini-MPV to be a brilliant thing to do. And we’re inclined to agree. A regular diesel B200 had its sensible power source removed, a 5.5-litre V8 from the E500 taking its place. The B55 serves up 378bhp and and 391lb ft of torque, which are sent to the rear wheels (after a conversion from front-wheel drive) via Merc’s seven-speed G-tronic gearbox. Top speed is limited to 155mph though 0-62mph takes just 5.2sec – around half a second quicker than a 345bhp Ford Focus RS500 manages, putting it in prime position to be the quickest hot hatchback on sale. Though sadly (and all too predictably) the Mercedes B55 is not for sale – it’s a one-off for now. But with an all-new B-Class due in the near future, keep your fingers crossed those dozen apprentices can influence their bosses further…

Skip advert
Advertisement
Skip advert
Advertisement

Most Popular

New Lotus Emira 420 Sport review – taking aim at the Porsche Cayman GT4
Lotus Emira 420 Sport front
Reviews

New Lotus Emira 420 Sport review – taking aim at the Porsche Cayman GT4

Lotus’s sports car gets added focus and is all the better for it. As it needs to be with such a lofty target...
22 Jul 2026
Why car bosses are quietly scrapping their multi-billion pound EV plans
Porsche badge
Opinion

Why car bosses are quietly scrapping their multi-billion pound EV plans

Industry giants U-turning on EV plans is not entirely good news, reckons Meaden
21 Jul 2026
Audi Quattro restomod uses RS4 underpinnings, with an optional 10,000rpm V8
Audacious IV Audi Quattro restomod front
News

Audi Quattro restomod uses RS4 underpinnings, with an optional 10,000rpm V8

A modern interpretation of the original Quattro swaps five-cylinder power for high-revving or supercharged V8 power
23 Jul 2026