Vehicle Virgins discusses the maintenance cost on Parker Nirenstein’s 2001 BMW M5. While the car is by no means unreliable, parts and labor are very costly so it is quite expensive to maintain. In his 2.5 years of ownership a combination of tires, brakes, clutch, driveshaft and other miscellaneous parts have totaled just under $10,000. Is it a lot? Yes. Is it worth it? Absolutely.