cars to flat tow for class C motor homes

I've towed a 2001 Ford Ranger pickup (about 3600 pounds) and a 2012 Honda Fit (2600 pounds). Smaller tows better. Both were manual transmission, an issue for some folks. For "less expensive" consider used vehicles (now called pre-owned). My son-in-law seldom pays more than $5000 for a vehicle, and has had a couple in the $500-1000 range (both would have been towable four-doors), which he considers disposable, drive it until it breaks.

I would not buy any new car as a towed vehicle. I bought the Ranger 6 years old, for about 1/3 of original price. I drove the Fit three years before converting it to a towed vehicle.