: Demand full documentation. These cars do not respond well to skipped oil changes or deferred cooling system maintenance. Market Availability
: Offers massive power and a great soundtrack but comes with higher risks of expensive oil leaks and cooling issues. buy used bmw 6 series convertible
: Ensure the infotainment screen, navigation, and all dashboard functions work. Intermittent iDrive displays are a known issue. : Demand full documentation
: V8 models are notorious for valve stem seal failures (look for smoke after idling) and oil leaks from various gaskets. Even a "minor" leak in these cars can be costly to fix due to limited engine bay space. buy used bmw 6 series convertible