Mini Roadster fuel filter heater issue

I encountered a similar power loss issue with my Mini Roadster. The symptoms you describe, particularly the poor engine response and uneven idling, resonate with my experience. Did you check the fuel system relay? I would advise taking a look at the fuel filter itself. When was the last time you changed it? A clogged filter can also mimic these symptoms. I'd also suggest checking the fuel pressure; it could be a faulty fuel pump. If that's the case, you will experience engine stalling, especially during cold start. Has it been hard to start?

Thank you for your response. Could you please elaborate on the specific connection issue you encountered with your Roadster's fuel filter? Was it visibly damaged, or did you diagnose it through electrical testing?

In my case, the issue was intermittent, and there was no visible damage to the connector. The error code pointed directly to the fuel filter heater circuit. Given the intermittent nature and your symptoms, I recommend a visit to a workshop equipped to perform electrical diagnostics on the fuel system. They can test the heater element and wiring harness to pinpoint the fault.

I appreciate your input. The issue has been resolved; it was indeed a defective connection to the fuel filter heater. The repair cost was 95€, as initially suspected.