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

McLaren managing director on leave, not expected in Geneva

McLaren Automotive's U.S.-born managing director, Antony Sheriff, is expected to be absent from the launch of the P1 hypercar at Geneva next week because he is on extended leave from the company. No reason for Sheriff's absence has been given, although McLaren is at pains to point out that he is “still employed as McLaren Automotive's managing director.” Rumors were circulating about Sheriff's absence from Woking in January, but company spokesmen back then stressed that he was still employed by McLaren and would unveil the P1 at Geneva. Despite those assurances, sources had reported earlier in the year that Sheriff “hadn't been seen in his office” for some days.

Dodge Dart unveiled at 2012 Detroit show

If you want confirmation that Fiat CEO Sergio Marchionne is shaking up his American patient look no further than the new Dodge Dart. It's a new compact car for Dodge - based on the underpinnings of an Alfa Romeo Giulietta. It's an important launch for Dodge and this sector accounts for 15% of all US car sales.

Mazda pushes fuel economy, plans a new engine by 2011

Mazda's push to increase fuel economy across its model line will include a new range of gasoline engines and may involve the introduction of diesel and idle-stop technology in the United States. Mazda is aiming to increase fuel economy across its global lineup by 30 percent by 2015. The first stage of that transformation will include the introduction of a more fuel-efficient four-cylinder powertrain in 2011.