V60 Poor Cold Start

Those symptoms point towards a fuel delivery problem, possibly an injector issue. Rough idle and difficult cold starts are common. I had similar problems with my old BMW 3 Series – turned out to be a faulty injector. Have you considered an injector test to confirm if injectors are functioning correctly? Also look for engine misfire codes using an OBD2 scanner.

Thanks for the insights. Can you elaborate on the injector test process? What results confirm a defective injector? Where should I start?

An injector test measures fuel flow rate and spray pattern. A defective injector might show a lower flow rate or irregular spray pattern. Given the precision required, I recommend a workshop for a fuel system diagnosis. I went to a mechanic and paid a lot, but it was worth it. Could be electrical, but better to have it checked.

Appreciate the explanation and advice. I'll arrange a professional injector test and fuel system diagnosis at a trusted workshop. Thanks for sharing your experience; it's been most helpful. Total repair was 515€ for parts and labor.