My BMW 320i feels under powered sometimes

Asked by May 13, 2017 at 11:44 PM about the 2005 BMW 3 Series 2.0 320i SE

Question type: Maintenance & repair

I brought my BMW 320i (55 plate) few months ago but past few weeks
sometimes the car will lack major power when driving. most of the time it
drives fine but then I will turn it off then on again and try and accelerate foot  
down and it takes 30 seconds just to reach 30mph so i carnt pull off fast or
anything. the only way i have over come this is to restart the engine a few
times but im not sure was is causing this lack of power.

2 Answers


Hi Nero3906, sorry to hear you're having problems with your BMW 320i, and I'm also sorry that I won't be able to give you a definitive answer on what's wrong as these are complex engines and it could be several things. I would get it into a BMW specialist for a proper diagnostic check. The most likely cause of the fault is that a coil has failed, but it could be that the plugs need replacing, or that you have faulty injector. There are also a myriad of different sensors on these cars and you could have a fault with something like an oxygen sensor, a nitrogen sensor, a low fuel pressure sensor or a camshaft position sensor. Good luck in getting it sorted out and let us know what the fault was. Bob

I would change the coil packs or maybe it midle box on exhaust has gone? Does it make a tinging noise and blowing noise when you just rev it high and let it reduce itself?

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