The Geneva Motor Show seems to be turning into quite the affair for tuners and AC Schnitzer is so proud of what they plan to bring that they’ve started teasing us.

What we have here is titled the AC Schnitzer Tuning ACS5 and it uses the fantastic F10 BMW M5 as a base.

The teaser shots AC Schnitzer provided are pretty intriguing since they give us a look at the interior and one of the engine bay.

There’s a third image of the exterior of the ACS5 but it’s so dark and un-understandable that you might as well consider it nonexistent.

Getting back to the stuff we can actually use, AC Schnitzer tells us the ACS5 uses the same twin-turbo 4.4 liter V8 engine you find in the M5. No swaps, no induction changes, nothing major, at least in appearance, hasn’t changed.

Despite this, the output figures have now grown to 620 horsepower and 531 lb-ft which means they’ve obtained a bump of 60 hp and 30 lb-ft.

Inside the ACS5 BMW M5 we find that the changes applied by AC Schnitzer are relatively tamed. There’s a bit of a reorganized look blending white, black and some blue accents.

If we’re honest, though we like the look of this interior, it actually identifies more with the sort of stuff Alpina would do than AC Schnitzer.

The new pedals are fine, since they’re made out of stainless steel but the new iDrive button isn’t. We might be deceived by the viewing angle but it looks awfully kitsch at the moment.