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Today we review the 2021 Airstream Interstate 19 Class B motorhome on the Mercedes-Benz Sprinter van chassis. By Tony Barthel Everything in life has a balance. One of the balances when choosing any RV is the tradeoff between a larger rig with more interior space and a smaller rig that’s more maneuverable. Today I’m looking at the 2021 Airstream Interstate 19 , a Class B RV based on the Mercedes-Benz Sprinter van. The difference in vans Unlike the ultra-popular Winnebago Travato I reviewed recently, the vans on which the Airstream and the Travato are based couldn’t be more different. The Fiat Ducato/Ram Promaster is front-wheel drive using a transversely-mounted gasoline-fired V6. The Mercedes-Benz Sprinter is rear-wheel drive using a longitudinally-mounted turbocharged V6 diesel engine. So what, you say? Well, it does make a difference. For example, by having front-wheel drive in a van, it moves all the driving components up front essentially under the hood. This allows for a lower floor and the ability to hang a generator, as Winnebago does, under the floor easily. Disadvantages of Sprinter chassis With the Sprinter chassis, a good bit of the space under the floor is consumed by the driveshaft and the rear axle with its differential. This means that the floor must be higher. That also means there is less space for things like water tanks and generators and all of that stuff. Furthermore, while there used to be an absolute advantage to a diesel engine in the past with their […]