As a luxury performance option among used cars, the 2012 BMW 650i Coupe has relatively higher maintenance cost compared to mainstream models. For reference, a 20,000 km service including oil and filter change costs approximately $204, while replacing spark plugs costs around $249 and a cabin air filter replacement is about $128. However, this particular vehicle boasts strong used car values: it has a clean inspection record and is priced at approximately $28,286 (a $248,429 discount off the original MSRP of $276,714), offering significant value for its performance and features. Proper regular maintenance will help keep long-term ownership costs manageable, which is key when investing in best used cars that offer luxury and power.