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

McLaren P1 (2013) CAR's race-speed Goodwood ride

The McLaren P1 leaves the startline like a shard of shrapnel riding the percussion wave of an explosion. It needs high-definition slow-mo to describe it, like those films of a bullet shattering an apple, or the slow-motion shots of an F1 car skipping over a kerb, front wing flexing, tyres deflecting, all that physics captured in beautiful, drowsy detail. In my mind, when I re-live the first moments of my ride up the Goodwood hillclimb in McLaren’s new hypercar, I see the release of energy in the same 1500-frames-per-second style.

New 2015 Mercedes S 65 AMG Coupe revealed – price from £183,065

The new 2015 Mercedes S65 AMG Coupe arrives The range-topping Mercedes S65 AMG Coupe has been revealed, and offers up its credentials as the perfect alternative to the Bentley Continental GT W12 with its 621bhp V12 delivering performance of 0-62mph in a 4.1 second whoosh. Even with its AMG badge, the S65 AMG Coupe is probably best thought of as the luxury take on the more aggressive and sporty S63 AMG Coupe – just as the V8 Continental GT is the sporty side of the Bentley Continental range – with its more effortless take on performance and power. There’s no doubt you get plenty of power and torque from the big V12, with 621 bhp and 737lb/ft of torque – driven to the back wheels through Mercedes’ seven-speed Speedshift automatic ‘box – on tap, enough to get to 62mph in 4.1 seconds and on to a 155mph limited top speed – but in a more creamy and effortless way than the S63.

Renault Mégane Coupé-Cabriolet (2010) first pictures

Renault has whisked the covers off the new 2010 Mégane Coupé-Cabriolet, the sixth bodystyle of the latest Mégane family. There are few surprises: it's a two-door with a foldling hard top, like its predecessor. The roof is mainly smoked glass and there's a new fixed glass wind deflector positioned behind the rear seats to minimise buffeting up to 50mph.