Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Driven: Chevrolet Volt

Meeting the Chevrolet Volt could easily have been an anti-climax. This is a design that ‘feels' nearly four years old — the concept first seen in Detroit in 2007. Together with the online hype surrounding it, and the part it plays in GM's renaissance, the weight of expectation is alarmingly high.

Nissan LEAF gets 5 Star Euro NCAP

Nissan LEAF - first electric car to get5 a 5 Star NCAP rating We moan about the Nissan LEAF. But only because it’s an inferior product to the cars we already enjoy, and at an inflated price. But we’ve never said it was a bad car.

Why the BMW M4 is better than the M3 V8 (2013)

It’s no exaggeration to say that the turbocharged engine in the upcoming BMW M3 (saloon) and M4 (coupe) models is one of the most important engines ever produced by BMW’s M Division. No, it’s not the first turbo lump the performance off-shoot has built – you'll probably know we’ve already had the X5/X6M mutants plus the brilliant 1M and M5 and M6 – but it is the first turbo ever to slot in a production M3, the car that personifies BMW’s iconic performance sub brand, which itself has always been defined by high-revving, naturally aspirated engines. All of this explains why M’s engineers have cut their teeth on other engines first before plucking up the courage to develop the M3/M4 turbo while turning their backs on the outgoing E92 M3’s exceptional V8.