Mini Cabrio Engine Issue

I understand your frustration with the engine issues on your Mini Cabrio. I experienced similar symptoms with my old Volkswagen Golf – check engine light, reduced power, and increased fuel consumption. In my case, the problem was also related to emission control, specifically a faulty oxygen sensor. Have you checked for any visible signs of damage or leaks in the exhaust system around the exhaust sensor? It might be a starting point before considering sensor replacement.

Thank you for your response. I appreciate you sharing your experience with your Volkswagen Golf. I have inspected the exhaust system to the best of my ability, but I am not particularly knowledgeable about car mechanics. Could you perhaps elaborate on what specific signs of damage or leaks I should be looking for? And how did you proceed with the exhaust sensor issue on your vehicle?

In my case, with the Volkswagen Golf, the garage identified a small crack in the exhaust manifold near the exhaust sensor, which was causing the faulty readings and triggering the check engine light. It's difficult to spot without a thorough inspection, often requiring specialized equipment. Given that you've observed similar symptoms, it would be prudent to have a professional mechanic examine the exhaust component and the exhaust sensor. They can perform a more detailed assessment and advise on the necessary repairs. Sensor replacement might be required, but it's best to confirm the source of the problem first.

I wanted to provide an update on the situation with my Mini Cabrio. As suggested, I took it to a workshop, and they confirmed the exhaust temperature sensor was indeed faulty, likely due to a small leak in the exhaust system. The sensor replacement and addressing the exhaust component issue cost approximately 265€. The check engine light is now off, and the engine power has returned to normal. Fuel consumption also seems to be improving. Thank you very much for your advice; it was greatly appreciated.