I bought this bmw in September 2023, with 2 owners and stamped service book.  

It was running well and suddenly began to  knock/tick during a trip away. The car still starts and drives with no lights on the dashboard however the knock/tick becomes very prominent when accelerating. 

I recommend the car to be towed on collection. 

Other than the engine problem, it was a good car and in generally a good condition for its age.