I have towed 3 Mazda Miatas (2000-2010-2012) nearly 70,000 miles and everybody says it cannot be towed either.
I know nearly 100 owners towing their Miatas and I know 3 who are towing Mazda 3s.
BOTH Roadmaster and Blue-Ox make baseplates for some of the 3s, so if they have invested time and money in research and manufacturing, you can bet someone is towing them.
By the way, I pulled the 2000 over 35,000 miles from Dallas to both coasts with a 22' Four Winds with a Chevy 350 engine. Everything went fine.
If I didn't have clearance issues with the Miata, you won't have them with a 3.
Don't let the naysayers beat you down.
Tim
