Reputations can be tricky business. (Just ask a certain pop singer.) At their best, they’re impossible to live up to; at their worst, they make it all but impossible to overcome the prejudice against you. For BMW, the brand has staked its reputation on being ‘the Ultimate Driving Machine’ for so long, the carmaker finds itself forever at risk of disappointing its fans if a new car doesn’t live up to their definitions of the slogan — something that
