Mini Cabrio Diesel Reduced Engine Power

Reduced engine power and a check engine light on your Mini Cabrio diesel definitely points to a throttle issue. You said the accelerator pedal module might be the problem, but have you considered the throttle body itself? A buildup of carbon deposits can restrict air flow, causing the throttle sensor to malfunction. Before you replace the pedal module, maybe check the throttle body for obvious signs of gunk. How's the air intake look? I'm not sure if it's related, but is the air filter clean?

Thanks for the tip about the throttle body itself. When you say 'check', what exactly should I be looking for, and is it something I can realistically do myself with limited tools? Also, if it is dirty, is cleaning it a viable option, or is replacement generally recommended?

Okay, so 'checking' means visually inspecting the throttle body. It's located between the air intake and the engine. You're looking for a black, oily buildup. Cleaning can work, there are dedicated throttle body cleaners available, but at that mileage, and considering the cost of cleaner versus a new throttle body, replacement might be the more reliable option. A faulty throttle sensor can cause all sorts of issues with air flow. Honestly, if you're not comfortable working on cars, it might be best to take it to a workshop. A proper diagnosis, including checking for any stored error codes, will save you time and potential headaches!

Just wanted to update this thread. Took the Mini to a trusted workshop, they confirmed the throttle body was indeed faulty. Replacement cost including labour was 265€, which is what I expected. Car's running perfectly now, full power restored. Thanks for the input!