Towing a 2500lb car with a Class C is very doable. Just be sure your hitch receiver and max vehicle loading (GCWR) is not exceeded.
The flat tow or dolly tow choice is not as clear. Brakes on the towed car (toad) is very smart and safe. It is not always required by law in many places, so that is up to you. I hope you pick brakes.
Many dolly's have brakes. They can be electric using a controller in the RV or "surge" brakes that are totally automatically adjusting.
Flat towing brakes will be a more expensive set-up to actuate the car's brakes remotely.
Dolly's cost new from $1200 - over $6000. Used costs for a very good dolly can be very low and are available most everywhere. Dollys usually have their own lights attached
Flat towing tow-bars, mounting plates, lighting systems and labor costs for mounting will usually be much more $ than the cost of a dolly, and like you see above, flat-tow RVers will tell you it is worth it.
Bottom line is that not all cars can be flat towed. If you have the funds, the right car, and the desire - get your car set-up to flat tow. If you want to save some money, want to maybe switch cars someday in the future, and want your car to be safe from rock strikes and save the added miles on the car's lower drive-line with the car riding up high....get a dolly.
Kim and Steve, Mustang LCDR (Ret), '07 Damon Outlaw #1193
I have seen gross intolerance shown in support of tolerance, Samuel Coleridge
WE LOVE OUR OUTLAW RV