Mini Cooper engine stalling at idle

Sounds like you might be having issues with your EVAP system. I had a similar problem with my Mini Cooper a while back – the engine light kept popping on, and it would stall sometimes, especially when the fuel tank was less than half full. Have you checked the fuel tank ventilation valve and its hoses? That was the culprit in my case. If the hoses are cracked or blocked, it can cause all sorts of weirdness.

Thanks for the quick reply! That's really helpful. When you say you checked the ventilation valve, did you do it yourself, or did you take it to a workshop? And how did you figure out it was the hoses specifically that were blocked?

I wasn't able to fix it myself, and I ended up taking it to a workshop. The engine light and the stalling were driving me crazy. They diagnosed it pretty quickly – said the hoses for the tank ventilation were all gunked up. The mechanic mentioned it's a fairly common issue with these cars. If you're not comfortable poking around yourself, I'd suggest getting it checked out professionally. It could save you a lot of time and hassle.

Just wanted to update you that it was indeed the tank ventilation valve. The hoses were all clogged up as you suspected. The automotive repair ended up costing around 175€. Thanks a bunch for the help!