We are running into more and more Mini Cooper S supercharger failures. The supercharger on a Mini Cooper S is belt driven and drives the water pump off the rear of the supercharger. Mini Cooper has no service interval for the replacement of the supercharger oil. We have had many Mini Cooper superchargers fail due to supercharger oil break down or supercharger rear housing leakage. To completely service the supercharger on a Mini Cooper S the water pump must be removed, The supercharger has both a front and rear oil reservoir. The water pump block access to the rear fluid reservoir fill/check hole. To remove the water pump the whole front of the vehicle has to be removed (see picture below). So this IS NOT a do-it-your self type job. We are seeing super chargers failing as early as 60,000 miles if they have not been serviced. Unfortunately the only symptom that the customer experiences is a slight overheating problem under excessive load. This is due to the water pump not spinning fast enough because the gears in the rear of the supercharger have already failed (see pictures below). The gears in the rear of the supercharger can only be service with a new supercharger. The MORAL OF THE STORY: have the supercharger service on you Mini Cooper regularly, if not, Mini will be happy to sell you a new one... We can take care of your supercharger service and all other services on your Mini Cooper and we will back  it with the best/most comprehensive/longest Nationwide Warranty in the automotive industry. Come see us, you will be glad you did!!! Click HERE to what our clients have to say about us.