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

ZF boss thinks 9 speeds is enough for transmissions

The nine-speed transmission might be where the race to add gears ends, ZF Friedrichshafen CEO Stefan Sommer said. He referred to nine speeds as the "natural limit" because going beyond that number adds weight and complexity that cannot be offset by gains in fuel efficiency. "There is no hard line, but you have to consider the law of diminishing returns.

McLaren: The dealer network takes shape

The McLaren dealer network is starting to take shape Most of what we’ve written about McLaren in the last month or two hasn’t been about the new McLaren – the McLaren MP4 12C – but about McLaren’s venerable hypercar the McLaren F1. Firts we had Ron Dennis telling anyone who’d listen – quite rightly – that the showdown Top Gear staged between the Mac and the Bug had to be re-run repeatedly until the Bug actually won, but Ron being Ron had to go a step further and proclaim the Veyron a ‘Piece of Junk’. But it made his point.

Audi S3 Sportback (2013) prices revealed

Audi has revealed prices for the new S3 Sportback ahead of its arrival in September. The BMW M135i and Mercedes A45 AMG rival starts at £31,260 for the six-speed manual, but you’ll want to pay an extra £1480 and get the six-speed twin-clutch S-tronic 'box that helps the five-door version of Audi’s 296bhp Quattro hot hatch see off 0 to 62mph in 4.9sec. How does it compare to its closest rivals?