We just returned from a 1500 mile trip towing my 3,700 lb Jeep TJ with our 2011 Via (Sprinter chassis). I know a lot of people tow Jeeps with these, and others tow lighter 2300 or less lb cars like Chevy Sparks, Fiat 500s, Nissan Versas and Smart cars.
On the flats we had no problems but...