I have 3 MINIs and my newest is a 2015 R60 with just under 60K miles. They're all well cared for in the last 3K miles all new filters, new iridium plugs, oil change, etc. I recently had the HPFP changed on our R57 and now I am experience a similar behaviour on the R60. It starts out good but after a bit the idle is very unstable and yesterday it started showing the yellow CEL engine warning although I felt no stumbling.

Carly shows the following DTC codes oldest first:
2BC0 MIXTURE TOO LEAN (NOT SERIOUS)
2775 AIR MASS TOO LOW (NOT SERIOUS)
2EEF CYL 4 MISFIRE
2EEB CYL 3 MISFIRE
2EE5 CYL 1 MISFIRE
2F00 CYL 2 MISFIRE RECOGNISED
2F02 CYL 4 MISFIRE RECOGNISED
2F01 CYL 3 MISFIRE RECOGNISED
2EFF CYL 1 MISFIRE RECOGNISED
2EFE MISFIRING SEVERAL CYLS RECOGNISED

I am trapping no issues with the HPFP or injectors and it seems very doubtful that every coil pack would tank at the exact same time. I'm wondering if I got a bad tank of gas perhaps with moisture contamination?

Any recommendations to troubleshoot this more accurately?

Thanks in advance.

 

Did you ever get any solution to this? I recently started getting something similar after coming back from holiday.

 

If not identical to original post, post all of your fault codes and add car information.

 

I'd look for an air leak since you have the MAF and a O2 code indicating lean and a lean condition can also cause a misfire.