Roy Fullee:
So the SL appears to still be an excellent car after 7year, even in its revised AMG spec. One car that appears to be missing as a rival is the BMW M6. Was this car forgotten, or is it outclassed by the Merc? Me thinks the latter!
Autocar, for whatever reason, doesn't think much of the M6. They are both great cars and I doubt if M6 gives much away to the SL in terms of build quality, performance, handling etc.
More to the point, I'm not sure if they are direct rivals. the SL is a strict two-seater, whereas the M6 makes a fair fist of being a four-seater coupe and is considerably the bigger and heavier car. The M6 is probably more of a rival to the bigger Merc CL coupe.