"The engine seems to rev forever and the cacophony that spreads through the cabin as those eight big pistons approach their peak has to be heard in person to fully understand the meaning of the phrase 'ripping through silk.'"
David Booth, The National Post
" With 500-hp under foot, the M5's turbine-like engine can literally shove you back in your seat and pin you there while accelerating, and it tracks around corners like a two-seat sports car."
Paul Williams, canadiandriver.com
"... all-alloy monster is equipped with 10 throttles (one for each cylinder), BMW's stepless variable valve timing and enough engine-control computer power to manage the Space Shuttle."