This is a great long term review showing the real world MPG results of owning a Thor Gemini. This motorhome runs on the Ford Transit Chassis and has the proven Ford 3.5 Ecoboost motor and 10 speed transmission backing it up. 310 HP and 400 Lbs of torque behind this beast. The drivetrain combo works great together and the MPG results are, to me, surprisingly high!