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

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.

U.S. sales, aided by General Motors, show some real spark in October

U.S. light-vehicle sales--bolstered by General Motor Co.'s first gain in 21 months--declined less than 1 percent in October as the industry showed signs of a recovery without the aid of government incentives. The drop was the smallest this year and made October the year's strongest month aside from August, which received a lift from the federal cash-for-clunkers program.

Chrysler posts first net profit since bankruptcy

Chrysler Group--the U.S. automaker that has survived two ownership changes and a U.S. bailout in the past four years--on Monday reported its first net profit since emerging from bankruptcy in June 2009.