An E92 M3’s, then? A properly edgy V8 warble but volume limited and far too civilised by comparison. The V8 M5’s, surely? A creamy baritone but hardly brutish. The CSL drowns it, kills it.

The high-revving E92 M3's V8 is good for many things. Putting one under the hood of a 135i, though, might just be the best thing you can do with the old S65 engine. My position on the 1M would be ...

the M3’s V8 is a terrifically advanced power unit that uses knowledge gained from Formula 1. The secret to its high-revving ability is an impressive reduction in mass – the new eight-cylinder ...