My opinion is that unless you need the extra torque for mountans or towing or plan on putting 20,000 miles per year or have just boatloads of spare money, gasoline is the more cost effective option. In addition to the higher cost of fuel, mainenance is also more expensive. I dont think the two economics intersect until you get to the 200,000 mile mark - which very few RVs ever reach.
The Sprinter is certainly a well respected chassis, but they ain't cheap - even used. And the interior space (or lack of) might become an issue unless you plan on a constantly rolling vacation. BTW, we had a RoadTrek for years and loved it on the road, but not so much after we parked for the night.
Last edited by Hermit; 09/11/2014 11:38 AM.
