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

McLaren slows MP4-12C production for fixes

British supercar maker McLaren has slowed production of the MP4-12C because of quality issues. The company says the problems are not safety- or performance-related. "There are no safety concerns for the delay," Tony Joseph, director of McLaren North America, told Autoweek.

Lexus RC F & RC F Carbon price and specs – costs from £59,995

The Lexus RC F (pictured) costs from £59,995 The Lexus RC F Coupe arrived earlier this year at the Detroit Motor Show and now, following the end of IS F production to make way for it, the RC F is going on sale in the UK, with prices starting at £59,995. Whether the RC F offers enough to prove a challenge to the BMW M4 remains to be seen, but on paper it all looks very promising – and good-looking. In the UK, the RC F will come in two guises – RC F and RC F Carbon – with both models getting the same 5.0 litre V8 with ‘more than’ 450bhp and 383lb/ft of torque driven to the back wheels through an eight-speed Sports Direct Shift gearbox.

Carlsson C25 super coupé (2010) first official pictures

Mercedes tuner Carlsson will whisk the covers off this slinky new sports coupe at the 2010 Geneva motor show. The new C25 is Carlsson’s take on the Merc CL and this reskinned supercar will be one of the world premieres at the Palexpo arena.  Carlsson says it’s the company’s first own-developed and badged road car and it just about looks convincingly different enough from the SL to warrant that claim, we reckon. Just 25 C25s will be built, each powered by a breathed-on Mercedes 743bhp bi-turbo 6.0-litre V12.