At least two types of M2 test mules have been spotted lapping the Nürburgring in September 2016 and March 2017:
- with sound suggesting an N55 engine (maybe a B58 engine according to some): here and here;
- with sound suggesting an S55 engine: here, here, here, here, here and maybe here too (though unclear).
A German source reported last Winter to have had a quick peek at a parked M2 test mule inside BMW M at Garching (source:
here):
- body color: black
- transmission: manual
- dashboard and interior: camo, but digital speedometer and colored stitching visible
- engine bay: carbon fiber strut brace à la M3/M4 (which, as we know, features the S55 engine)
- headlights: new LED design
- front end: heavy camo (plastic parts) (likely still under construction)
- rear diffusor: partial camo (tape) (likely still under construction).