Hello Forumgemeinde. I have a problem with my Mini Roadster where the workshop doesn’t know any more. I turned with my Mini on a narrow road and drove with the right front wheel into a small pothole. Immediately afterwards the engine warning lamp went on and the engine had almost no power any more. I drove then still about 1 km to the next workshop and put the car there. Since this workshop had no BMW special tools, have which only superficially tested and meant it would have to have a problem with the control times. I then had the car transferred to a specialist workshop specialized in BMW engine technology. Main engine revision and control chain replacement. There the valve cover was removed, the control times and the voltage of the control chain checked. Everything was flawless. But all cylinders have only a compaction between 4.5 and 6.5. That is actually far too little. Usually m the engine had at least 10. The compression was measured with a digital and an analog measuring instrument. Comparable results. The engine has only about 80k down and was always gently driven. Does any of you have any idea what the problem could be? I would be infinitely grateful to you. Greetings from Christian