The BMW E60 550i in countries like the United States is just ‘another car’. But in the UK where diesels dominate the mid-range sector, they’re incredibly rare beasts. In fact, there are only 15 550i M-Sports registered on UK roads.
With a 4.8-litre 362bhp V8 mated to a six-speed manual gearbox the 550i reaches 62mph in 5.3 seconds and goes on to a limited top speed of 155mph. I’m tempted to go for a well specced SE model. The M-Sport is arguably better looking than the SE but the 18-inch alloy wheels and body kit are a bit too showy for proper sleeper potential.
What do you think?