 2006 Mercedes with 63,711 miles and has had all recommended service performed at the suggested mileage, including regular oil changes every 4,000 miles (synthetic oil).Car stalled without warning.Towed to Park Place Mercedes where it was diagnosed that pistons in cylinders 1 and 4 had come apart, requiring a complete engine block replacement.The cost of repair was quoted at $15,000.00. The value of the car, prior to the catastrophic event, as listed on Kelley Blue Book is $17,000.00 private sale.My expectation is that an engine on a well-maintained, vehicle should last beyond 63,711 miles, unless there are issues with quality of parts used, or the quality of the engine construction.