BMW built just 803 M4 GTS track weapons worldwide, and the very last one — #803 with only 305 miles — is now for sale at $1 million.

As BMW's in-house tuning division, BMW M is responsible for some of the world's finest performance vehicles. The brand is famously known for not being content with its already blazingly fast machines.

MotorTrend has performed instrumented testing of more than 300 BMWs over the years, and from that group, we’ve rounded up the 10 fastest BMW models we’ve tested to date. Out of those 10 vehicles, the ...