Bimmerpost brings us some video of the next-gen BMW M3 undergoing testing at the Nürburgring. Although a fair portion of the clip shows the sedan and coupé prototypes on regular public roads as the cars make the short transit between the Nordschleife and BMW’s test facility in the village of Nürburg.

We think we know the F80M will be powered by a six cylinder engine (it certainly sounds this way). But we don’t know if it will be a straight six or a V6. We think we know the engine will be turbocharged. But we don’t know if there will be one, two or even three turbos.

We’re also not sure if the turbo(s) will be a traditional configuration or a fancy new electronic gizmo, or perhaps a combination of both technologies.

So, as you can see there’s a lot of speculation happening with the new M3 at the moment. Also, don’t forget a change in BMW model naming means the M3 will be a sedan and the more traditional coupé will be badged as an M4.

All should become much clearer when the M3 sedan debuts in concept form at the 2012 Geneva Motor Show next March. We think.

[Source: Bimmerpost]