Mercedes have been making high quality vans for years, and the Sprinter is perhaps the best commercial van available today. Used by just about every courier service in Europe, the Sprinter is ultra-reliable and very well made.
Although not as popular as other makes for use as a camper van, probably because of a higher purchase price, the Mercedes Sprinter is the best choice camper van if you intend to travel a long way on a single trip. Maintenance is rarely required, breakdowns almost unheard of, and parts are available worldwide.