general problems of the 2008 BMW M3

Engine began suddenly making a very loud knocking sound without any warning, and I drove it straight to sandy sansing BMW service center, where they stated that the vehicle has suffered a catastrophic crank bearing failure. The engine has to be replaced now. . . Car has been meticulously maintained and always serviced at BMW dealers since it was new. . . A car with 56k miles on it should not have such an extreme failure in this nature. . .

There's an issue with the car's dct/transmission. The problem occurs when you slow down- like for a turn, but do not come to a complete stop. The dct transmission seems to have trouble figuring out what gear to select because when you step on the gas to accelerate, there is a very significant delay in the onset of power- up to 2-3 seconds. By this time, the driver is usually really digging into the throttle. The transmission finally picks a gear, which results in the car suddenly lurching forward, sometimes invoking the anti-skip control. This has happened several times since I bought the vehicle and can prove to be very dangerous when you're in close proximity to another car and the car thrusts forward.

My M3 with m-dct transmission has significant throttle delay in lower gears at rolling speeds. Car would not respond to throttle input for one second or more and then suddenly surge forward. This is a significant safety issue as the car fails to accelerate when needed.

I have a 2008 BMW M3 sedan, built 2/08, which I bought new in July, 2008. It has a dual clutch transmission. The problem is as follows. There is a significant hesitation or delay between stepping on the gas, and getting the car to go, when I have slowed almost to a stop, then want to accelerate. This happens all the time. It is dangerous especially when merging into traffic. In wyoming in late June, 2009, for example, I was coming from a side road onto a main highway. There was no stop sign for me, just a right curve in the road I was on, then merge into oncoming traffic on the main highway. The transmission had shifted into second gear because I had slowed down for the curve. As I turned right and stepped on the gas, nothing, it seemed like for a second or two. Oncoming traffic was moving along at a fast speed, and I almost got rear-ended before the motor finally responded to throttle input. I think this is dangerous. When I step on the gas, the motor should respond immediately, without any significant lag time. It seems like some computer is trying to figure out what to do. Maybe there is a software fix. Whatever it is, it is a dangerous condition.

My 2008 BMW M3 e92 rapidly slows when the dct transmission is downshifting. The car lags and has almost stalled several times in the middle of the road increasing the possibility of a crash. BMW north America customer service has refused to accept that there is a problem with the dct transmission software for all of these VIN production cars. Any help would be much appreciated. Thanks brad larkin.