BMW 2 Series Stalling: Rough Idle and Emissions Failure

I had very similar issues with my 2019 BMW 3 Series last winter. The symptoms you're describing match exactly what I experienced, rough idle, stalling, power loss, and failed emissions. Turned out to be a faulty fuel injector. After diagnosis, they found one injector wasn't spraying fuel properly, causing uneven combustion. The repair involved replacing two injectors that were completely clogged. It was a serious job as they had to partially dismantle the intake manifold to access them properly. The problem isn't uncommon in these engines when they get high mileage. My car was around 95k km when it happened. Left unfixed, it can cause more engine damage, so I wouldn't wait too long. I'd say get it checked soon, as running with bad injectors can lead to bigger problems. My repair was pretty straightforward once they identified the issue, but finding a good mechanic is key. Make sure they specialize in BMW engines. Let me know if you need more specific details about the repair process.

Hey Dave, thanks a lot for sharing your experience. That's really helpful, as it does sound exactly like what I'm dealing with! Just curious, do you remember roughly how much you ended up paying for the whole injector replacement job? Also, has everything been running smoothly since the repair, or have you noticed any other issues pop up?

Great news, I can actually update you on the whole situation now! I took your advice and got it sorted at a BMW specialist. The total bill came to 515 € for replacing the faulty injector, and I'm happy to report it was worth every penny. The best part? The car's running like a dream now! That annoying mixture preparation error is completely gone, and all those symptoms, the rough idle, stalling, power loss, they've all disappeared. It's like having a different car, honestly. The engine's smooth as silk, even at idle, and I haven't had a single problem since the repair. If you're still having those issues, I'd definitely recommend getting it checked out sooner rather than later. The relief of having it properly fixed is worth it, and it prevents any potential bigger problems down the road. These BMW engines are pretty sensitive to injection issues, but once they're sorted, they're solid. Let me know how you get on with yours!

Thanks Dave, Yeah, I bit the bullet and took it to a specialist BMW shop yesterday. You were spot on about the injectors! They did a full diagnostic and found two bad ones, just like in your case. The mechanic was actually really thorough and showed me exactly what was wrong. The total came to about 650 € for both injectors plus labor, which wasn't as bad as I feared. They had it done in a day, and I've got to say, what a difference! The engine's purring now, no more stalling, and that annoying power loss is completely gone. Feels like I'm driving a new car again. Really glad I didn't put it off any longer. The mechanic mentioned that letting it go could've caused more damage to the catalytic converter, so I probably saved money in the long run. They even cleared the check engine light and ran another emissions test, passed with flying colors this time! Thanks again for pushing me in the right direction. Sometimes you just need that extra nudge to get things sorted.