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New BMW M3 and M4 engine secrets laid bare

BMW's M division has lifted the veil of secrecy on the inline six-cylinder engine bound for its upcoming M3 sedan and new-to-the-range M4 coupe and convertible, revealing a potent twin-turbocharged 3.0-liter direct injection gasoline unit that produces an official 424 hp at 7,500 rpm and what officials describe as "significantly more than 369 lb-ft" of torque. The newly developed engine, known under the internal codename S55 B30, shares its 84.0 mm bore and 89.6 mm stroke with BMW's standard turbocharged 3.0-liter in-line six-cylinder direct-injection gasoline mill, the M55 used across the German car maker's lineup, endowing the aluminum block unit with an overall swept volume of 2,979 cc. This represents a sizeable 990 cc reduction on the engine BMW's M division's new unit replaces, the S65.

Audi reveals monster V12 diesel

By Phil McNamara First Official Pictures 18 September 2006 08:15 Audi has revealed details of a flagship diesel Q7, which runs a V12 TDI inspired by the company's Le Mans-winning diesel racer. Ingolstadt claims the engine is the world's most powerful production diesel. The blown 6.0-litre V12 kicks out 493bhp and a staggering 737lb ft at just 1750rpm.

Citroen DS3 Cabrio Racing confirmed for production – and it’s OFFICIAL

The Citroen DS3 Cabrio Racing is officially going in to production It’s been more than three years since the Citroen DS3 Racing arrived as a performance pocket rocket to sit at the top of the DS3 range, but all we’ve had so far on the obvious next route – the DS3 Cabrio Racing – is a concept at Goodwood this year. We did hear shortly after its appearance at Goodwood that the Citroen DS3 Cabrio Racing is going in to production, but now that’s been made official by Peugeot. In terms of what’s on offer, the Cabrio – apart from the hole in the roof – is going to be exactly what the DS 3 Racing is with a 1.6 litre four-pot Turbo delivering a very healthy 207bhp, enough for a 0-62mph in around 6.5 seconds.