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

Lamborghini Aventador J at 2012 Geneva motor show

There maybe other Italian sports car manufacturers looking to hog the limelight at the 2012 Geneva motor show (and Ferrari and its 730bhp F12 is one of them) but Lamborghini will vie for attention with the Aventador J. A two-seat, open top speedster based on the Aventador LP700-4, it has some intriguing bits of carbonfibre tech and highly individual design. Named 'J' after the FIA’s Appendix J that governs the tech spec of race cars in certain classes, it’s proper bedroom wall material – but little boys and girls are unlikely to ever see it on the road as it’s a one-off and will go to a lucky owner after its appearance at Geneva.

Revealed: Mercedes-Benz CL63 AMG

Less than a month after revealing a raft of changes to standard versions of its range-topping coupe, Mercedes-Benz has lifted the veil on a more powerful and significantly more economical CL63 AMG. Set for U.S. sale from November, the up-market performance coupe receives a series of mid-life styling tweaks, including larger headlamps, a restyled grille, more heavily contoured hood and re-profiled bumpers--all aimed at providing the CL63 AMG with added appeal against stiff competition from the likes of the Bentley Continental GT and the newly refreshed Aston Martin DB9.

Mercedes CLA starts to roll off production line in Hungary

The Mercedes CLA – the baby Mercedes CLS based on the new A Class – has started to roll off the production line at Kecskemét in Hungary. But that’s probably unfair; based as it is on the new A-Class, the CLA is a very good car under the skin, even if its big USP is the dramatic styling. Now, just over a week after the CLA got its first public reveal (if you don’t count the Mercedes Concept Style Coupe on which its based), the first production car has rolled off the line at the Mercedes plant in Kecskemét, Hungary.