NHTSA complaint #11741002

Owner complaint summary

I am writing regarding my BMW X5 xDrive40i, model year 2019. For this G05 model coded cars, repeated transfer case failures have been reported due to a known issue: on the factory they put a wrong oil in it and then published a Technical Bulletin about it as if they are not the ones responsible for that. The problem is, due to that mistake, transfer cases of cars manufactured between 2018-2020 becomes dead in time. Cars shudders, jerking at low speeds, cannot deliver the power to the ground effectively due to intermittent and very disturbing, powerful shudders. This creates a huge safety concern cause: 1) if you are on an intersection the car might not join safely to the traffic in a perceived timing due to the shudders, intermittent power delivery. 2) If you are on a driveway and moving to the street the car might not move to the street for the perceived timing or once moved cannot move safely to join the traffic. 3) If there is a failure on the transfer case and if there is a sudden stop is needed. On the road with no shoulder access or if this is a bridge where there is no shoulder, it creates a huge risk to safely move the vehicle. An unavoidable sudden stop can create a huge accident risk for everybody. This is a very known and very common problem for BMW cars equipped with B58TU engine especially years 2018-2020. BMW is also definitely aware of that and this safety concern but instead of fixing it they moved away their responsibility as if they are not the ones made the mistake. But, when contacted with BMW NA, they refused to help.