Driver's side door bushings were shot and I had to lift up the door while closing it with the knee.
The headliner kept sagging.
I went through four or five left front rotors in 3 years.
This car was specifically bought to ship to the Philippines while I was in the service. While the car took some abuse due to the roads over there, the headliner, brakes, AC, etc. were problematic and the build quality of this car was rather inferior in comparison to more contemporary vehicles. With credit to GM, I did own a 1979 Caprice, which was a faultless car.
Ouch! You had to bring up the bad points. Honestly, there were quite a few, but I liked my '80 Monza w/the 3.1 V-6. It ate front brakes, tires and yes, I had the door bushing problem too. By today's standards it would be a P.O.S. For some reason I have a soft spot for the car. Maybe it's because it was my first car. The styling was clean and attractive. It was dark blue with light blue pin striping.
My sister had a '77 w/the 305 V-8. It kicked butt! Silver with red interior. Sharp car! Aaahhh the old days.