If you plan to drive your RV a lot (more than 6,000 miles/year), then diesel RVs will be recommended. engines have a long life and will outlast gas engines. It's obvious that these diesel pushers are more expensive than their gas counterparts. However, with the longer engine life, diesel motorhomes will definitely get higher resale value. A diesel engine can be also driven for longer periods of time between maintenance. Besides, the increased torque in diesels means much more power! Not only are these engines more powerful, they’re located in the back which clear the issue of having the heat from the cab or the engine noise to deal with up front.