The RV in Christmas Vacation probably would also make the list now that I remember that one.
Then there was the Lincoln with the suicide doors that they destroyed in Animal House.
I used to live on the road to a pretty run down trailer park and you had quite a few “Uncle Buck” caliber cars go by on a daily basis. You got to know which vehicle it was without seeing it by the way they sounded after a while. Yes, cars can backfire that loud in real life.
I also had an old Jeep at one point that had been converted to a Ford 302 motor and it was done all wrong. They simply blocked the PCV off by putting .45 shell casings, .410 shotgun shell hulls, and such over the nipples. That is just one example of the fine rigs I found under the hood. The intake manifold had a large crack and it burned coolant and oil. It also backfired frequently like the Uncle Buck car which I assume also came with the Ford 302 or similar. I started to fix up the Jeep but it was a money pit and I had no idea of how certain things were done as it was a Frankenstein model… I finally gave up and sold it after the last engine fire. The guy who bought it from me said it backfired like a rifle going off when they first got it running. I told him that was normal.