Originally Posted by CanAutM3
I know it is not very smart on my part, but I did track the car until the displayed range was down to an indicated ---.- km
When I went to the pump, it drank 61.5 litres of fuel (63 litre tank). I never had any fuel starvation symptoms. This shows how well the fuel tank and pick-up are designed
In the general M3 forum, there was a recent thread suggesting that the M3 fuel tank is slightly larger than in normal 3 series, perhaps by .5 gallons, and BMW didn't bother to recalibrate. I haven't looked it up myself, but others have reported a different part number on RealOEM (aluminum vs steel). If so, this may explain how you can run it to 0 and still not yet have starvation.