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Mercedes’ AMG division unveils new twin-turbo V8

Those obsessed with torque bemoaned Mercedes’ high-revving 6.2-litre V8 when it was launched in 2005, but just as the world has come to accept the naturally aspirated engine, the company has now unveiled a new twin-turbo 5.5-litre V8. Up to 563bhp – which is the same as the SLS AMG – and 663lb ft, which is much more than the 479lb ft the modern-day Gullwing supercar manages. The engine is an all-new 5.5-litre V8 (5461cc to be exact) with direct-injection technology, an aluminium crankcase and two turbochargers.

Google continues autonomous car tests [w/video]

Google is leading the charge towards the production of a fully autonomous car, releasing a video earlier this week of the car being tested on a programmed route. Steve Mahan, who is 95 per cent blind, successfully tested the car with Google engineers and a member of the local police close at hand should something go awry. Google kitted out a Toyota Prius with its software, taking the shape of a spinning cylinder on the car's roof, which senses traffic or activity close to the car and automatically adapts to its situation.

Chrysler first-quarter profits down

Chrysler Group said net income fell to $166 million in the first quarter as costs of two large product launches crimped the automaker's seventh consecutive quarterly profit. Profit fell 65 percent from the $473 million posted during the same quarter of 2012, Chrysler said in a statement today. First-quarter revenues dropped 6 percent to $15.4 billion.