I need to buy a used vehicle, just an economical commuter car. Have noticed more than a few Minis in my price range. For those who have owned them, how are the maintenance costs? Any big services that I should be aware of and at what mileage are those scheduled for? Any other problems or potential problems I should be aware of? Like the look of them as they are a bit more sporty than other brands/models in that range. Any advice will help. TIA.