For subscribers
Car review: BMW's new 3.9-second M3 and M4 offer infinite drive configurations
Sign up now: Get ST's newsletters delivered to your inbox

The BMW M3 (left) and BMW M4 are powered by a new 3-litre inline-six engine fed by two turbochargers.
ST PHOTO: KUA CHEE SIONG
SINGAPORE - It used to be that when you took delivery of a test-drive car, the company representative would just throw you the key and say "here, take it for a spin".
Increasingly these days, a new test-drive car comes with a half-hour mini lesson on electronic operating systems. Which is weird, because when you buy a new computer, the salesman takes your money, thanks you and waves goodbye.


