Table 1 shows two common other fuel system related problems of the 2015 Mini Cooper S.
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System problems | |
| Other Fuel System Tank Filling/charging problems |
The fuel filling nozzle turns off repeatedly (as if already full) while filling the fuel tank. About 1/4 to 1/3 of a gallon of fuel will go in before it turns off, backs up, and the gas overflows onto the outside of the car and onto the concrete. It happens regardless of the pump being used. It started happening occasionally a few months ago if the tank was refilled when a quarter full. It now happens consistently, no matter the fuel level. I had the car put on a lift and the system diagnosed today. The mechanic said the cause is a faulty service valve within the fuel tank assembly. They also said it is a known issue with f56 Mini coopers.
Fuel filling nozzle shuts off repeatedly while refueling. Upon gassing up, valve clicks immediately and pump shuts off like it's full no matter which gas station or pressure I exert. I saw a bulletin "si m16 01 15" which affected Minis produced in 2014 but did not include my 2015 Cooper S. A comment from the bulletin had a temporary solution which is to angle the pump to 45, then pump slowly at the magic speed, though this can take anywhere from 10 to 30 minutes. This is dangerous on my part as I travel past midnight for several hours and spending more time at a gas station in the dark is worrisome. I do get spills occasionally which I have to keep wiping and is a station hazard. Replacing the fuel tank completely at an estimated $2k+ is too costly especially during this pandemic and is due to faulty manufacturing.