BMW 4 Power Loss: Common Causes & Fix Experiences

Hey there! I had pretty similar issues with my 2015 BMW 3 Series (coming from someone with some experience working on cars). The symptoms you're describing are exactly what I faced, rough running, jerking, and that dreaded check engine light. Turned out to be a faulty fuel injector in my case. Had to take it to my regular workshop, and they diagnosed it with their diagnostic tool. They replaced the defective injector, set me back about 515 Euro, but the car's been running like a charm since then. Before I can help more specifically, what's your mileage, and have you noticed any other symptoms? Also, is the check engine light steady or blinking? I'd recommend getting it checked soon since bad injectors can cause more damage if left unfixed. Love these BMWs, but when injection system issues pop up, you really need to address them quickly. My 5 Series had similar problems too. Let me know these details, and I can share more about what to expect at the workshop.

Hey there! I had pretty similar issues with my 2015 BMW 3 Series (coming from someone with some experience working on cars). The symptoms you're describing are exactly what I faced, rough running, jerking, and that dreaded check engine light. Turned out to be a faulty fuel injector in my case. Had to take it to my regular workshop, and they diagnosed it with their diagnostic tool. They replaced the defective injector, set me back about 515 Euro, but the car's been running like a charm since then. Before I can help more specifically, what's your mileage, and have you noticed any other symptoms? Also, is the check engine light steady or blinking? I'd recommend getting it checked soon since bad injectors can cause more damage if left unfixed. Love these BMWs, but when injection system issues pop up, you really need to address them quickly. My 5 Series had similar problems too. Let me know these details, and I can share more about what to expect at the workshop.

Hey there! I had pretty similar issues with my 2015 BMW 3 Series (coming from someone with some experience working on cars). The symptoms you're describing are exactly what I faced, rough running, jerking, and that dreaded check engine light. Turned out to be a faulty fuel injector in my case. Had to take it to my regular workshop, and they diagnosed it with their diagnostic tool. They replaced the defective injector, set me back about 515 Euro, but the car's been running like a charm since then. Before I can help more specifically, what's your mileage, and have you noticed any other symptoms? Also, is the check engine light steady or blinking? I'd recommend getting it checked soon since bad injectors can cause more damage if left unfixed. Love these BMWs, but when injection system issues pop up, you really need to address them quickly. My 5 Series had similar problems too. Let me know these details, and I can share more about what to expect at the workshop.

Hey there! I had pretty similar issues with my 2015 BMW 3 Series (coming from someone with some experience working on cars). The symptoms you're describing are exactly what I faced, rough running, jerking, and that dreaded check engine light. Turned out to be a faulty fuel injector in my case. Had to take it to my regular workshop, and they diagnosed it with their diagnostic tool. They replaced the defective injector, set me back about 515 Euro, but the car's been running like a charm since then. Before I can help more specifically, what's your mileage, and have you noticed any other symptoms? Also, is the check engine light steady or blinking? I'd recommend getting it checked soon since bad injectors can cause more damage if left unfixed. Love these BMWs, but when injection system issues pop up, you really need to address them quickly. My 5 Series had similar problems too. Let me know these details, and I can share more about what to expect at the workshop.

Thanks for the detailed response! My BMW has 38440 KM on the clock and just had its service last month. The check engine light is steady, not blinking. Haven't noticed any unusual sounds, but there's a slight hesitation when pressing the gas pedal. This injector issue you mentioned sounds pretty similar to what I'm experiencing. Good to know about the repair cost, helps me budget for what's coming. Will get it to the workshop this week before it potentially causes more problems.

Thanks for the detailed response! My BMW has 38440 KM on the clock and just had its service last month. The check engine light is steady, not blinking. Haven't noticed any unusual sounds, but there's a slight hesitation when pressing the gas pedal. This injector issue you mentioned sounds pretty similar to what I'm experiencing. Good to know about the repair cost, helps me budget for what's coming. Will get it to the workshop this week before it potentially causes more problems.

Thanks for the detailed response! My BMW has 38440 KM on the clock and just had its service last month. The check engine light is steady, not blinking. Haven't noticed any unusual sounds, but there's a slight hesitation when pressing the gas pedal. This injector issue you mentioned sounds pretty similar to what I'm experiencing. Good to know about the repair cost, helps me budget for what's coming. Will get it to the workshop this week before it potentially causes more problems.

Thanks for the detailed response! My BMW has 38440 KM on the clock and just had its service last month. The check engine light is steady, not blinking. Haven't noticed any unusual sounds, but there's a slight hesitation when pressing the gas pedal. This injector issue you mentioned sounds pretty similar to what I'm experiencing. Good to know about the repair cost, helps me budget for what's coming. Will get it to the workshop this week before it potentially causes more problems.

Hey again! Just saw your reply about the mileage and steady check engine light. Yeah, that hesitation with the gas pedal is exactly what I experienced with my BMW. Since you mentioned having a recent service, I'm even more convinced it's likely the injector, especially with those symptoms matching mine so closely. Mine started acting up around 42000 KM, so we're in the same ballpark. The steady light is actually a bit reassuring, when I had a blinking light on my old 5 Series, that was a way bigger problem! The steady light typically means it's not an emergency, but still needs attention soon. Just a heads up, when I got mine fixed, they found some carbon buildup too, which is pretty common in these engines. Might be worth asking them to check that while they're at it. My mechanic did a fuel system cleaning along with the injector replacement, and it made a real difference in how the car runs. The repair should be pretty straightforward for any decent BMW workshop. Let us know what they find, always interesting to compare notes with these cars. They're great machines when everything's running right!

Hey again! Just saw your reply about the mileage and steady check engine light. Yeah, that hesitation with the gas pedal is exactly what I experienced with my BMW. Since you mentioned having a recent service, I'm even more convinced it's likely the injector, especially with those symptoms matching mine so closely. Mine started acting up around 42000 KM, so we're in the same ballpark. The steady light is actually a bit reassuring, when I had a blinking light on my old 5 Series, that was a way bigger problem! The steady light typically means it's not an emergency, but still needs attention soon. Just a heads up, when I got mine fixed, they found some carbon buildup too, which is pretty common in these engines. Might be worth asking them to check that while they're at it. My mechanic did a fuel system cleaning along with the injector replacement, and it made a real difference in how the car runs. The repair should be pretty straightforward for any decent BMW workshop. Let us know what they find, always interesting to compare notes with these cars. They're great machines when everything's running right!

Hey again! Just saw your reply about the mileage and steady check engine light. Yeah, that hesitation with the gas pedal is exactly what I experienced with my BMW. Since you mentioned having a recent service, I'm even more convinced it's likely the injector, especially with those symptoms matching mine so closely. Mine started acting up around 42000 KM, so we're in the same ballpark. The steady light is actually a bit reassuring, when I had a blinking light on my old 5 Series, that was a way bigger problem! The steady light typically means it's not an emergency, but still needs attention soon. Just a heads up, when I got mine fixed, they found some carbon buildup too, which is pretty common in these engines. Might be worth asking them to check that while they're at it. My mechanic did a fuel system cleaning along with the injector replacement, and it made a real difference in how the car runs. The repair should be pretty straightforward for any decent BMW workshop. Let us know what they find, always interesting to compare notes with these cars. They're great machines when everything's running right!

Hey again! Just saw your reply about the mileage and steady check engine light. Yeah, that hesitation with the gas pedal is exactly what I experienced with my BMW. Since you mentioned having a recent service, I'm even more convinced it's likely the injector, especially with those symptoms matching mine so closely. Mine started acting up around 42000 KM, so we're in the same ballpark. The steady light is actually a bit reassuring, when I had a blinking light on my old 5 Series, that was a way bigger problem! The steady light typically means it's not an emergency, but still needs attention soon. Just a heads up, when I got mine fixed, they found some carbon buildup too, which is pretty common in these engines. Might be worth asking them to check that while they're at it. My mechanic did a fuel system cleaning along with the injector replacement, and it made a real difference in how the car runs. The repair should be pretty straightforward for any decent BMW workshop. Let us know what they find, always interesting to compare notes with these cars. They're great machines when everything's running right!

Thanks so much for all this info, really helpful! The carbon buildup you mentioned makes total sense, especially since I've noticed the symptoms getting a bit worse over time. I've booked the car in for tomorrow morning, and I'll definitely ask them to check for carbon deposits too. I'll make sure to mention the fuel system cleaning as well, sounds like it could be worth doing while they're working on it anyway. You're right about these cars being great when they're running properly. I was getting a bit worried about the potential repair costs, but knowing what you paid for your injector repair gives me a better idea of what to expect. It's actually a relief to hear from someone who's dealt with the same issue and got it sorted without any major complications. I'll update the thread once I get the diagnosis. Really appreciate you taking the time to share your experience!

Thanks so much for all this info, really helpful! The carbon buildup you mentioned makes total sense, especially since I've noticed the symptoms getting a bit worse over time. I've booked the car in for tomorrow morning, and I'll definitely ask them to check for carbon deposits too. I'll make sure to mention the fuel system cleaning as well, sounds like it could be worth doing while they're working on it anyway. You're right about these cars being great when they're running properly. I was getting a bit worried about the potential repair costs, but knowing what you paid for your injector repair gives me a better idea of what to expect. It's actually a relief to hear from someone who's dealt with the same issue and got it sorted without any major complications. I'll update the thread once I get the diagnosis. Really appreciate you taking the time to share your experience!

Thanks so much for all this info, really helpful! The carbon buildup you mentioned makes total sense, especially since I've noticed the symptoms getting a bit worse over time. I've booked the car in for tomorrow morning, and I'll definitely ask them to check for carbon deposits too. I'll make sure to mention the fuel system cleaning as well, sounds like it could be worth doing while they're working on it anyway. You're right about these cars being great when they're running properly. I was getting a bit worried about the potential repair costs, but knowing what you paid for your injector repair gives me a better idea of what to expect. It's actually a relief to hear from someone who's dealt with the same issue and got it sorted without any major complications. I'll update the thread once I get the diagnosis. Really appreciate you taking the time to share your experience!

Thanks so much for all this info, really helpful! The carbon buildup you mentioned makes total sense, especially since I've noticed the symptoms getting a bit worse over time. I've booked the car in for tomorrow morning, and I'll definitely ask them to check for carbon deposits too. I'll make sure to mention the fuel system cleaning as well, sounds like it could be worth doing while they're working on it anyway. You're right about these cars being great when they're running properly. I was getting a bit worried about the potential repair costs, but knowing what you paid for your injector repair gives me a better idea of what to expect. It's actually a relief to hear from someone who's dealt with the same issue and got it sorted without any major complications. I'll update the thread once I get the diagnosis. Really appreciate you taking the time to share your experience!