BMW X2 MAF Issues: Poor Acceleration and Rough Idle

Hey there! I have some experience working on cars as a hobby mechanic. I actually faced almost the exact same issues with my 2020 BMW X1 last year. The symptoms were identical to what you're describing, sluggish acceleration, rough idling, and terrible fuel economy. After scanning the code, my trusted workshop confirmed it was indeed a faulty mass air flow sensor. The repair cost me about 365 Euro including parts and labor. They replaced the sensor and cleared the codes. My X3-driving had the same problem too, seems like it's not uncommon in these models. The car's been running perfectly since the fix, smooth acceleration, normal fuel consumption, and no more check engine light. Before I can give more specific advice, could you share: How many miles/kilometers on your X2? Have you recently had any work done on the air intake system? When did these symptoms first appear? This would help me better understand if your situation matches what I experienced.

Thanks for sharing your experience! I've got 130692 KM on my X2, and just had my regular service last month. The symptoms started about 2 weeks ago, pretty suddenly actually. No recent work on the air intake, just routine maintenance. Your situation sounds exactly like what I'm dealing with. It's somewhat reassuring to hear that fixing the MAF sensor solved it for you. The repair cost seems reasonable too, I was worried it might be something much more expensive. I'll definitely get it checked out at the shop. Did you notice any warning signs before your MAF sensor completely failed? Just curious if I could've caught this earlier.

Hey again! Yeah, looking back at my X1's situation and comparing it to yours, it's even more certain now that we're dealing with the same issue. The sudden onset of symptoms is very familiar, that's exactly how mine started too. Actually, thinking about it now, I did notice some minor signs before it got bad. About a week before the major symptoms, my car would occasionally hesitate for a split second when accelerating from a stop. I brushed it off thinking it was just the cold weather, but now I know better. Also, my fuel economy started creeping up slightly, but I only realized this in hindsight when checking my fuel logs. With your mileage being pretty close to what mine was when it failed (I was at around 125,000 KM), it's really looking like the same scenario. These MAF sensors typically start acting up around this mileage in our models. One thing I learned after my repair, keeping the air filter clean and changing it regularly can help prevent premature MAF sensor failure. My mechanic mentioned this wasn't my issue, but it's good preventive maintenance anyway. Given how similar our cases are, I'd bet you're looking at the same fix I needed. Just make sure they do a proper diagnostic scan to confirm before replacing parts. Let me know how it goes!

Thanks for all that detailed info! It's super helpful to know about those early warning signs, wish I'd known to watch for that hesitation from a stop. I actually remember experiencing something similar but, like you, just blamed it on other factors. And now that you mention fuel logs, I should've paid more attention to my gradually increasing fuel consumption. I just scheduled an appointment with my mechanic for tomorrow morning. Really glad to hear this is likely just the MAF sensor and not something more serious. I'll definitely ask them to do a full diagnostic scan first, and I'll make sure to be more diligent about the air filter maintenance going forward. Thanks again for sharing your experience, it's made me feel a lot better about the whole situation. I'll update you once I get it sorted out!

Hello, after sending the car to the mechanics to change the oil cooler, there is a loss of torque, diagnostic sometimes show that there is air mass flow sensor fault, everything os plugged nothing is abnormal what is the cause and repair?

Start by checking if the mass air flow (MAF) sensor is clean and properly connected. Sometimes, oil or debris can contaminate the sensor during maintenance, affecting its performance. If it's dirty, you can try cleaning it with a MAF sensor cleaner. If the issue persists, consider having the sensor tested or replaced. Let me know how it goes or if you have any further questions!