Each 2007 Porsche Boxster comes with a respectable warranty, including four-years/50,000-miles of basic coverage, four-years/50,000-miles of powertrain coverage, and ten years and unlimited mileage of corrosion protection. There isn’t a free maintenance plan like you’d find with a new BMW, but with the Boxster’s recommended oil change interval of 20,000 miles and maintenance-free fuel filter and engine coolant, you wouldn’t be saving as much as you might expect anyway.