Raybestos Mk1615 Master Cylinder Repair Kit on 2040-parts.com

A closer look at the 2015 BMW M3 sedan and M4 coupe: Turbocharged performance is gonna cost you

By the time the 2015 BMW M3 sedan and M4 coupe were revealed at the Detroit auto show, we already knew a lot about what to expect from the Roundel's newest generation of high-performance driving machines. It was no secret, for example, that the new M3 sedan and its two-door counterpart, the M4, will be down two cylinders and a few hundred pounds from their predecessors. Now that we've had a chance to get a look at the cars in production trim, here's a closer look at what's under all the aggressively vented fascias, spoilers and M badges.

Almost 90% of drivers ignoring MOT checks

AN INCREDIBLE 86% of drivers think their car will pass its MoT test first time and without the need for any remedial or service work. A further 62% of British drivers fail to put any money aside to help with the cost of an MoT and any repairs that result from the legally required annual test. The research by Asda Money found that only 7% of drivers think their car will fail its MoT.

Video: Porsche GT2 RS attacks GingerMan Raceway

You saw our walk-around and overview of the 2011 Porsche GT2 RS earlier this week. As promised, here's the VBox footage of Autoweek editors blasting around GingerMan Raceway in southwest Michigan doing what the Porsche does best. So far we've brought you track-day action featuring the Chevrolet Corvette Z06 and the Porsche GT2 RS--what's missing?