Mercedes Sprinter has Gross Vehicle Weight Rating of 11,030 pounds.
They also have Gross Combined Weight Rating of 15,520 pounds.
At full load, it still leaves ~ 4,500 pounds for flat towing. If motorhome is less than fully loaded, then 5,000 pounds is within rating.
Whether you feel comfortable towing a car with a Sprinter is a personal decision. I’ve seen many Sprinter-based motorhomes towing relatively light cars.
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