A diesel pusher motorhome is a Class A motorhome with a diesel engine, mounted in the rear of the RV motor home. One of the benefits of a diesel pusher is that they have a very long lifespan. In fact, most diesel engines can travel about 500,000 miles before a major repair will be required. Of course, regular maintenance is required. And with proper maintenance the life expectancy of a diesel motor is often more than 1,000,000 miles. Class A Diesel pushers are also much quieter for the front seat passengers, making for a much more comfortable ride, as the engine noise is all behind them. Class A Diesel Pushers RV Coaches also outperform Class A RVs with gasoline engines in higher elevations because they handle lower air density better than an RV with a gasoline engine.