2006 BMW 325I: sudden loss of power

Filed Sep 15, 2025 · Electrical, Engine · NY

The Valvetronic Actuator malfunctions. The malfunction may have been caused by a Battery Positive Cable that has corroded over time. The result is that the vehicle stops unexpectedly during acceleration. Driver safety and that of others is put at risk due to the vehicle suddenly losing power and stoping while being driven. The vehicle was evaluated by the dealer. Warning lamps were intermittent and inconsistent. To my knowledge there is no Valvetronic Actuator or Battery Cable specific warning lamps or messages. There was a 2017 recall for the Battery Positive Cable, but my specific VIN was not covered (by a few months). My VIN (1986 325I) should have been included in the 2017 recall.

Filed Jul 19, 2020 · Acceleration, Brakes · 154,000 miles · NC

I was traveling to a local store. My car suddenly jerked,radio turned off while lights on dash flickered on and off. I lost power temporarily and I began smelling wires. I also notice a 'pop' as I attempted to pull over and notice no brake operations so I had to coast to a stop with my 2 year old in the backseat. I started my flashers and turn off car to search for smell. It seems like dash but I didn't see any smoke. I get back in car and attempt to start it and nothing! I still have power so I was confused, I check trunk ultimately and remove battery cover and this is what I found! This is a safety issue and very dangerous. I got the car towed home and won't drive until it is repaired obviously. I am upset but even happier me and my kid made it home safely, something keeps telling me today was a blessing we made it.

Filed Jul 31, 2019 · Engine · 16,000 miles · TX

Tl* the contact owns a 2006 bmw 325i. While driving 70 MPH, the vehicle began to release smoke from the engine and overheat. The vehicle also began to lose engine power. As a safety precaution, the contact pulled the vehicle over to the shoulder. Once the vehicle reached a complete stop, it would not restart and was left on the side of the road overnight. The following day, the vehicle was towed to an independent mechanic who diagnosed that the engine failed. The dealer and manufacturer were not contacted. The failure mileage was 16,000.

Filed Oct 15, 2018 · Driver assistance, Engine · 172,000 miles · GA

Engine suddenly shot off complete stall - lost power steering on freeway while going 70 MPH

Filed Nov 21, 2015 · Engine, Steering · 125,000 miles · GA

Belt tensioner bolt broke off causing serpentine belt to slip off causing engine to fail. Car was being driven when car started to lose power and power steering stopped working. I have no documentation yet because car has just been diagnosed and is in repair shop now. I found online that this has happened to others as well.

Filed May 17, 2013 · Electrical · 110,000 miles · TX · fire

Car lost power abruptly while driving approximately 40mph in traffic. Upon looking into the rearview mirror, smoke was appearing from the trunk. We opened the trunk and saw part of the carpet, which covered the car battery, was burned. The positive battery cable somehow shorted and caused a small fire, causing the carpet and actual battery to burn. After the smoke cleared, the battery cable had a small slit in it and the copper cabling had turned to an oxidized white color. Luckily noone was hurt, but we spent our own money to have it towed and repaired. We complained to bmw north america but they simply said there was no recall. We had to buy our own expensive cable from a local bmw dealership and have it installed. It turns out bmw just recently started a positive battery recall program on various cars, but the 2006 325i is not in that list. The incident that happened to us last year is similar, if not worse, than what was described in their details of the current battery cable recall.