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

BMW X6 M50d: Performance & economy revealed

BMW X6 M50d: Performance & Economy figures revealed With the BMW X6 M50d confirmed as on its way, we now get news on its performance and economy. We’ve been reporting the likelihood that BMW will drop their new three stage turbo diesel in to the X6 for a long time now, and that’s a racing certainty after BMW teased what is almost certainly the X6 M50d this week with a video. But what about power, performance and economy on the M50d?

Top 5 most important cars at the 2013 Frankfurt motor show

The five most important memorable cars in attendance at the world’s biggest motor show Nothing is as controversial as irritating your core enthusiasts, and the Audi Sport Quattro concept risks doing just that. Its name and styling riff off one of the most iconic cars in Audi’s back catalogue – and in WRC history – yet the new yellow version unveiled at the 2013 Frankfurt motor show has abandoned the five-cylinder engine, manual gearbox, and respectable kerbweight of the 2010 Quattro concept. In its place, we’ve an RS7-based coupe with the power of a Lamborghini Aventador (691bhp), twice the claimed economy of a Golf GTD (113mpg), but only because of a twin-turbo V8 mated to a hefty hybrid powertrain, and that means this new Sport Quattro weighs as much as a Bugatti Veyron Super Sport (1845kg).

One Lap of the Web: Peugeot climbs, an extremist sinks and a proposed $1,500 race car

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- Peugeot has prepped a Pikes Peak 208, and the folks at Gizmag take an in-depth look at the car.