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

BMW to offer four-cylinder diesels in North America to improve fuel efficiency

BMW will offer four-cylinder diesel engines in North America as it seeks to improve fuel efficiency and match the performance of its current six-cylinder gasoline engines. BMW is considering diesels in a range of models, including its 1 series, 3 series and 5 series sedans and possibly the X3 crossover and Z4 roadster, said Tom Baloga, vice president of engineering for BMW of North America. "You're going to see it in the 3 series, and the 5 series is a good possibility," Baloga said.

Porsche lineup takes shape for Rennsport Reunion at Mazda Raceway

More than 350 retired Porsche race cars will participate on track at the Mazda Raceway Laguna Seca during the Porsche Rennsport Reunion IV, Oct. 14-16. Many of the participating cars have tackled the 11-turn Mazda Raceway during professional racing days.

BMW 5-series GT: Don't call this concept an MPV

BMW's desire to compete in every conceivable luxury-market niche has moved up a gear with the unveiling of the 5-series GT, a car known until now by its working title, the Progressive Activity Sedan (PAS). Although BMW will be billing the five-door liftback as a concept at its public showing at the Geneva motor show in early March, little about its bold design is expected to change before it reaches showrooms. In fact, the official photographs reveal the new car in its production-based glory.