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RS and Dusk sedan join Chevy's Sonic lineup

The Chevy Sonic RS sedan and the Sonic Dusk sedan will join the bow tie's lineup of small city commuter cars next spring. Both start at just more than $20,000. The Sonic RS sedan will take the styling cues of the RS hatchback, including the deep air dam in the front fascia, aluminum sport pedals, flat-bottom steering wheel and leather seats with red accents.

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.

A look at Acura future products

Acura is in the middle of a major product changeover, reflecting plans to challenge second-tier luxury rivals Audi, Buick, Infiniti and Volvo rather than Mercedes-Benz, BMW and Lexus. Acura has launched the ILX compact sedan and redesigned the RDX compact crossover. It will redesign the RL flagship this fall and make changes to the MDX crossover and TL mid-sized sedan in 2013.