A0028207989 Mercedes 6 Disc Changer 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.

MG Dynamo EV Concept debuts at SMMT

The MG Dynamo EV Concept (pictured) is on display at the SMMT MG may not be what it once was (which you can take either way), but as a marque MG is 90 years old. As part of celebrations for the 90th birthday of MG, there’s an exhibition of MG’s models at the Society of Motor Manufacturers and Traders (SMMT) offices in London this week, which include a global debut for an electric MG city car. The MG Dynamo Concept is MG’s vision of an electric city car which, say MG, encompasses “the latest in design and engineering technology”.

Autoweek in review: The new BMW M3 draws controversy, Spyker takes GM to court, and the 2013 Honda Accord takes a bow

The upcoming 2014 BMW M3 is ruffling feathers with enthusiasts. The new car will initially be available as only a sedan with an automatic transmission, which has led Bimmer fans to message boards and comment sections to express their disappointment. Can BMW win them over?