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BMW M4 Convertible revealed. Price from £60,730

The BMW M4 Convertible (pictured) revealed We reported last month that the new BMW M4 Convertible would debut at this year’s New York Auto Show, and here it is ahead of that debut complete with trick folding metal roof, 425bhp and a price tag that just nicks over the £60k line. A direct replacement for the old M3 Convertible, the M4 Convertible will cost you just over £4k more than the M4 Coupe, but for the extra money you get the same car but with infinite headroom – and a big weight penalty. The new 3-piece metal folding roof can be tucked away in a mere 20 seconds at the flick of a switch, with better noise insulation than the M3 Convertible had and more room in the boot when the roof is down too.

2012 Mercedes A-Class revealed in patent filings

The slightly drab 2012 Mercedes A-Class Car makers must hate filing for patents on new cars, because it means trusting images of their new and secret car to a third party. Basic images, admittedly, but the real-deal nonetheless. So Mercedes must be spitting feathers today as the images they sent with their patent applications on the 2012 A-Class leak out of every open window, door and PC and straight on to the interweb.

Audi Urban Concept preview

Following this past weekend's spy shots of the new urban concept caught on a film set in Berlin, Audi has released a set of sketches of the all-new 1+1-seat vehicle set for its global unveiling in Frankfurt. Claimed to combine the ‘elements of a racing car, a fun car and an urban car' the concept exploits new lightweight manufacturing processes. Its cockpit is made from carbonfiber-reinforced polymer (CFRP) and it features free-standing, low-rolling resistance 21-inch wheels with protective plates.