New Denso Oxygen Sensor, Mhk500840 on 2040-parts.com

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.

Mercedes A45 AMG: Official

The Mercedes A45 AMG – Mercedes’ first ’Hot Hatch’ – has been revealed ahead of a debut at Geneva 2013. It gets 355bhp and does 0-62mph in 4.6 seconds. The 2.0 litre turbo 4-cylinder engine under the bonnet of the A45 produces a very healthy 355bhp and 332lb/ft of torque, enough to scoot the A45 AMG to 62mph in 4.6 seconds yet still returns official economy of 34mpg.

Plenty of contenders for Pebble Beach honors

The one we saw first was Sam Mann's 1930 Duesenberg J Graber Cabriolet. It was entered in the Tour, a 60-mile pre-Pebble cruise around Monterey, down to Big Sur and back, which gives cars entered in the Pebble Beach Concours d'Elegance a chance to show that they are more than just pretty things. Mann's Duesey had all the looks of a winner, with its long front hood, flowing fenders and two seats way in the back.