Mini Paceman Engine Troubles

Sounds familiar. I had a similar issue with my Paceman. Check engine light, jerking, the whole shebang. Did you check the oxygen sensor? I had to replace mine. Also, have you ruled out any issues with the fuel pump? Sometimes a failing fuel pump can cause similar symptoms.

Thanks for the quick reply! The oxygen sensor seems fine, according to the diagnostic tool. But the fuel pump is a good point. How did you diagnose yours? Was it throwing any specific codes, or did you just replace it as a precaution? Also, could a faulty crankshaft sensor cause similar problems?

Yeah, the diagnostic tool didn't give me a clear fuel pump code either, but the mechanic suspected it based on the other symptoms. Crankshaft sensor could also be a culprit, but in my case, it was definitely the oxygen sensor and a small exhaust leak causing the misfire. If you've checked the obvious stuff, I'd suggest getting it to a workshop to check for exhaust leaks with a smoke test before replacing more parts at random. They can also check fuel pressure which could indicate a failing pump.

Just wanted to give you an update. Dropped the Paceman at the shop, and you were spot on! Turned out to be a leak in the exhaust system, causing the engine to run unevenly. They replaced the faulty part, and now it's running smoothly again. Cost me 265€, but at least it's fixed. Thanks a bunch for your help!