2008 BMW 135I: sudden loss of power

5 of the 51 complaints about the 2008 BMW 135I describe sudden loss of power.

owner complaints: 5
of this car's complaints: 10%
typical mileage: 24,000
recalls: 0

Is there a fix? 11 service bulletins cover this area of the car. See below

Sudden loss of power by model year

2012
2
2011
2
2010
6
2009
8
2008
5

What owners say

Filed Nov 1, 2010 · Electrical, Fuel system · 2,000 miles · IL

Tl*the contact owns a 2008 bmw 135i. While driving approximately 50 MPH, the engine loss power with the illumination of the warning indicator. The vehicle restarted in the low power mode. The vehicle was taken to an authorized dealer for diagnosis. The computer software was updated and replacement of the fuel pump. The vehicle exhibited poor acceleration performance after the repair. The vehicle was taken back to the dealer and they informed that the vehicle experienced a turbo lag which was associated with the newly installed fuel pump. The failure continued to occur. The failure mileage was 2,000. Updated 01/13/11 *bf updated 01/24/11

Filed Sep 3, 2010 · Fuel system · 24,000 miles · CA

Vehicle is a bmw 135i, model year 2008, convertible. Car suffers sudden and complete loss of power at high speed and often during high-traffic, rush- hour speeds on moderate incline sometimes with minimal safe shoulder and median. This the 6th incident over the last year and a half. Bmw of san diego replaced fuel pressure sensor and multiple high-pressure fuel pumps. We have barely avoided multiple accidents. We are scared to drive our car.

Filed Jul 25, 2010 · Fuel system · 45,150 miles · TX

While driving on a busy, 45-MPH road, my car lost power suddenly and began to shudder when I applied the gas pedal. I was losing speed and unable to accelerate. I had no choice but to put on my hazard lights, and pull into the nearest parking lot I could find. After researching the problem, along with scanning the car for any error codes, I discovered that the high pressure fuel pump (hpfp) had failed and needed replacement. Oddly enough, this was the 3rd hpfp that has failed on this car.

Filed Nov 9, 2009 · Fuel system · 26,300 miles · MD

My 2008 bmw 135i started taking 10-20 seconds for the vehicle to start. The problem has been ongoing for a couple of months now. I took the vehicle to a bmw dealer and complained about it. The dealer informed me that bmw informed them that it was normal for the vehicle to do this. And told me that they couldn't change the fuel pump, which has been known to go bad on this vehicle, until a code was detected. Today, while trying to merge in traffic on the highway, the car suddenly had reduced power and I couldn't accelerate. I was very fortunate that there was no car behind me or the incident could have been disastrous. The car also showed an icon on the dash that indicated the car had gone into limp mode or reduced power mode. This is a serious safety issue, which could have resulted in serious injury or death if a car had been behind me. Please look into this problem before someone is injured.

Filed Apr 30, 2009 · Fuel system · 10,000 miles · TX

I would often hear a liquid pumping sound on when put onto reverse after ignition. Serviced at bmw dealership but they oddly were not able to replicate the problem. I could replicate it every time. One night the car started with long cranks. "reduced power" warning came on and car was sluggish, jerky, and could not go above about 30 MPH. Took it in to dealership. The fuel pump was replaced with new pump. I asked how come it wasn't replaced when I reported the problem earlier. They said they don't replace it until the pump actually dies. This is not a very safe practice.