BMW M2 VANOS Symptoms: Repair Advice Needed

Hey there. Had a similar issue with my 2017 M4 last summer. The symptoms you're describing match exactly what I experienced, rough idle, power loss, and increased fuel consumption. My problem turned out to be a faulty camshaft solenoid valve in the VANOS system. It's actually a common issue in these engines. When I brought it in, the diagnostic showed the solenoid wasn't getting proper power supply, causing the valve timing to get messed up. The repair wasn't a quick fix, had to keep my car at the garage for three days while they sourced the parts and did the work. It's definitely something you want to address soon because it can lead to bigger engine problems if left unchecked. The VANOS system is pretty critical for engine performance and efficiency. For what it's worth, the solenoid issue isn't typically catastrophic if caught early, but it's not something you want to ignore. You'll want to find a shop that specializes in BMW performance vehicles since they'll know what to look for with these specific symptoms.

Thanks for sharing your experience! That really sounds spot-on with what I'm dealing with. Just wondering, do you remember roughly how much you ended up paying for the whole repair? Also, has everything been running smoothly since then, or have you had any other VANOS-related troubles pop up?

Hey again! Yeah, I can definitely update you on that. Got the whole thing sorted, you'll be glad to know it only set me back about 250 € to fix that faulty camshaft solenoid valve. The issue was exactly what I thought, one of the valves wasn't getting proper power supply, which was messing with the inlet VANOS. And good news, since getting it fixed, my M4's been running like a dream! No more rough idling, power delivery is back to being smooth as butter, and fuel consumption's back to normal. Haven't had a single VANOS-related problem since the repair, and it's been several months now. Honestly, it's such a relief when you get these things sorted properly. The key is catching it early, which sounds like what you're doing. For the price and the peace of mind, it's totally worth getting it fixed by someone who knows what they're doing. My car feels just like new again, it's amazing what fixing one component can do! Let me know if you need any other details about the repair. Always happy to help another BMW owner out!

Just got back from the mechanic and wow, what a relief! Found a really good shop that specializes in BMW repairs. They diagnosed and fixed the VANOS issue in just two days. My wallet's actually pretty happy too, repair cost was similar to yours, around 300 for parts and labor. Honestly, I was stressing out way too much about this. The mechanics were super straightforward, showed me exactly what was wrong with the solenoid valve, and explained everything clearly. They even gave me some tips about preventive maintenance to avoid future issues. Car's running beautifully now, like night and day difference! No more rough idle, power's back to normal, and it's not guzzling fuel anymore. Should've done this weeks ago instead of worrying about it. Really appreciate everyone's input here, helped me understand what I was dealing with and gave me confidence to get it sorted properly. Guess sometimes you just need to hear from others who've been through the same thing. Thanks again for sharing your experience, it really helped point me in the right direction!