The Blackwing's 3.7-second run to 60 mph meant it trailed both the M5's 3.0-second time and the RS7's 2.9. BMW may have the power advantage, but its tremendous mass counteracts that. With its ...

Agile, very fast, and more entertaining than you might expect Its mass eventually makes itself felt; RS6 is just as engaging, but more useful Amazingly, the RS7 rides really nicely even on the ...