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.

No Porsche plan for model priced less than Boxster

Porsche has no plans to sell a car costing less than the Boxster, according to the automaker's head of sales and marketing. "To build a Porsche for 30,000 euros [$37,800 at current exchange rates] currently doesn't fit our brand," Bernhard Maier told the Automotive News Europe Congress in Monaco on Thursday. "The extraordinary purchase experience is not for free and the entry price is currently covered with the Boxster and in the future by the Macan." He said Porsche's plan to double sales won't compromise exclusivity.

2015 Subaru Legacy revealed in Chicago

Subaru pulled the sheets off the 2015 Legacy sedan at the Chicago Auto Show on Thursday. The company says it's the roomiest version of the Legacy yet, boasting the largest passenger cabin in the midsize segment. Two engines will be offered.