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

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.

McLaren 12C Concept showcases McLaren Special Operations (MSO) goodies

The McLaren 12C MSO Concept (pictured) highlights McLaren’s MSO upgrades Unless you’ve ever been and bought a supercar (or a high-end luxury car) new, you may not realise that the regular options list is just the starting point for individual customisation. In fact everyone, from Ferrari to Rolls Royce, will do pretty much whatever you want to your new car if your pockets are deep enough, and it’s a game – and a cash cow – McLaren are keen to make the most of. That’s why we had the extreme McLaren X-1 project a couple of years ago, but that went a lot further than most Mclaren buyers want to go with their new car.

Bonneville broadcast will add pepper to the salt

If you've ever been to Bonneville during Speed Week, you know what a thrilling corner of the motorsports world the place occupies: standing out on the endless, blazing-white expanse of salt, hearing the cars before you see them, seeing first the roostertail of salt rocketed into the air, then the tallest part of the rear fin, then the car itself, blasting over the curvature of the Earth, followed by engine cutoff, popping chutes, deceleration and the giddy celebration of driver and crew as yet another record falls. But most people -- those with jobs, kids, responsibilities (where are your priorities, people???) -- will never get a chance to go. So this year, the Southern California Timing Association has made a deal to broadcast audio of the entire Speed Week live, as it happens, direct from the salt, on the fabulous internet.