The 2017 BMW X5 xDrive35i generally maintains good long-term reliability for used cars, but some common problems reported by owners include oil leaks from the valve cover gasket, turbocharger rattling noise during cold starts, and panoramic sunroof squeaks on bumpy roads. This specific used vehicle has passed a third-party inspection confirming no major accidents, fire damage, or water damage, with only a minor flaw on the left front shock absorber mount. Regular maintenance—focusing on engine oil checks, turbocharger seals, and sunroof track cleaning—can help prevent potential issues, keep maintenance costs manageable, and reduce the need for replacing expensive used car parts prematurely. For anyone looking to buy used cars, being aware of these common problems and staying on top of maintenance is crucial to keeping your used car in optimal condition.