2015 Thor Motor Coach 24SA, 2015 Thor Motor Coach Citation Sprinter 24SA When it comes to fuel efficient diesel-powered Class C Touring/Class B+ Motorhomes, look no further! Citation Sprinter Motorhomes are where luxury meets the road. Built on a Mercedes-Benz Sprinter chassis, these luxurious motorhomes are engineered and built to be practical, comfortable and easy to drive while maximizing fuel economy.