2003 BMW 325I Transmission and drivetrain Problems

“I have a 2003 325I when coming to a stop with the foot on the brakes (lightly), as the transmission downshifts I can hear a thud/clunk coming from the rear end of my car along with a increase in the RPM's. I also hear it as soon as I let off my foot of the gas pedal or accelerate causing my car to not drive properly and my transmission to hit my suspension very hard. So, I've searched this issue and other Bmw forums and found that other people had the same complaints and this exact problem which is dangerous & very scary.”

“Driving on 12/12/2019 on interstate highway about 65mph, going straight, when all of a sudden rear wheels (this is rwd - 2003 Bmw 325I) locked up completely - the vehicle went forward at about 45 degrees sideways before it straightened out when the speed dropped. Thankfully I did not hit anybody, and no one hit me although there was quite a bit of traffic on this multi lane interstate. I got aaa tow it home. He had to drag it onto the truck bed as the rear wheels continued to be locked up. When I removed and opened the differential tapered roller bearing rollers were in the oil space. …”

“Own a Bmw 3251, rear end started making popping noise when put in reverse and when turning curves. When on interstate rear end locked up while driving causing my car to skid through all lanes of traffic. After having car inspected the rear end had broke, we replaced the rear end. Also having trouble with head lights staying on and blinkers. Right rear tail light over heated and burnt items in trunk. Radiator has broke and driverside window regulator and clutch fan.”

“I went to start my vehicle in the morning and it started and then turned back off on its own. This happened about 3 times,before it stayed on. I then drove the vehicle about 40 miles and the transmissions started to thump. The vehicle only has 100k miles. I kept up on all its maintenance. I took the vehicle to the dealership and the transmission light and check engine light both came on. I was informed it would cost 6,500 to repair my transmission.”

“Bought 2003 Bmw 325I brand new. After driving it for 4 years (39,800milies) it started making a thumb sound and started losing transmission power and the gear indication light turns on. Brought to dealership and I thought it was fixed. It was always happening until the warranty expired. I can not use the car specially during cold weather. This problem was happening on the highway and city street while in motion. Most of the time the car is in the garage. I can not believe that at only 39,800 miles, this car is going to have such a major problem. But I believe this a transmission issue. …”