During the last chase scene after Starsky picked up Hutch if you look at the left rear tail light there's no damage (near miss a blue van). Then a few seconds later Starsky nearly misses a tractor trailer you can see the left tail light and bumper damaged. Then by the next scene when the Grand Torino is visible there isn't any damage. I don't think Starsky would have visited a body shop and had his car fixed while Hutch's life was on the line.