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

Maserati Ghibli

Maserati has unveiled the first images of the 2013 Ghibli ahead of its official debut next week at the Shanghai Auto Show. While the Ghibli badge has previously been reserved for coupés – both Giugiaro's 1967 original and Gandini's Biturbo-based 1992 Ghibli II – this is a four-door sports sedan to sit below the larger Quattroporte revealed in January at the North American International Auto Show. It's the first time the carmaker has built a car for the E-segment since the 1994 Quattroporte IV and is set to challenge high end of the Mercedes E-Class and BMW 5-series in AMG and M5 guises respectively.

CAR tech: who's to blame for your car's terrible fuel economy?

In early 2013 Audi lost a case brought by the Advertising Standard Agency (ASA) because of ‘misleading’ fuel economy figures used in an advert, after a customer complained they couldn’t get anywhere near the 68mpg quoted. The court case once more exposes the yawning gap between officially sanctioned mpg figures and those experienced by owners. A recent study by the Independent Council on Clean Transportation (ICCT) looked at cars sold in the UK and Europe, and discovered the difference between official mpg figures and real-world driving had grown from 8% in 2001 to a barely believable 21% in 2011.

Chevrolet Corvette Z06 actually gets 650 bhp and 650 lb/ft of torque

The new Chevrolet Corvette Z06 Convertible (pictured) gets 650 bhp The American are found of telling us there’s no substitute for cubic inches, but throw in a supercharger to the equation and numbers become even more appealing, and more linear than a turbo too. So the fact the 6.2 litre V8 under the bonnet of the new Corvette Z06 already manages 465 bhp in naturally aspirated guise, it wasn’t a stretch when the car world was expecting around 625 bhp when Chevrolet finally revealed the power for the Z06. But it’s more.