[G.R]

Picked my new car up last week and was pleasantly surprised to find this feature came with my July built M3 as I thought this feature was only coming with cars built after September. At first I thought it was a great little concept by the boys at M division to save you fuel and reduce emissions and didn't have a negative effect on your driving experience.

For those that don't know what happens bascically everytime you get a red light or come to a stop by putting your foot on the brake the engine will stop for the 15-40 seconds until the light goes green or you are ready to resume driving. You then take your foot off the brake and the engine starts up again as you accelerate off.

Then I realised it wasn't always working, most of the time actually. So I changed from D mode to S mode to see if that made a difference. It turns out this auto engine stop feature only works when the car is in D (auto) mode. Which is only 5-10% of the time when I'm driving.

Why can't they get it working when it's in S mode?