Which BMW is the easiest to maintain?
BMW Maintenance Cost – FAQs The BMW 3 Series—especially the 320i and 330i—is widely considered the cheapest to maintain due to its reliable 4-cylinder engine, simple RWD layout, and wide availability of parts. BMW oil changes are expensive because BMW vehicles are engineered differently than standard economy cars. The combination of premium synthetic oil, larger oil capacity, specialized filters, turbocharged engines, dealership labor rates, and advanced engineering all contribute to the higher cost.