No way!!! I will rather give the guy the money for a new battery
than let a stranger hook up cables to my car and then having two
cars needing a jumper.
Thinking of it... I doubt that I would have the guts to ask an M3 owner
for a jump start if I was in the other end with a dead beater..
2012 E92 M3 | Alpine White | Extended FR | DCT | Premium | Competition | BMW Apps | M Performance Exhaust | CF Front Splitters | V1 M Steering Wheel