2 years after I bought my 2008 Mazdaspeed 3, I had twin babies. They fit in the back fine for years, it was a tight fit, but it was doable. I have a 65# victorian bulldog and all of us fit in that car a few times. I never had a bike rack/tow hitch on it, so I can’t comment on that but a MS3 would definately fit the…