Mid to late 70s not good for Domestics!
This was the worst time I agree.
I used to get those huge "World Car Catalogs" from Italy, that have every car made in the world in them. To see what happened to the American car industry, I compare my 1971 guide to the 1976 guide...what horrible thing our industry morphed into, and never did really recover until the mid to late 80s and 90s (some question that, but that's how I feel).
I don't doubt the quality issues about your interior Kenmore and Rick's points too. Cadillacs were still very good in 71 though, in my opinion. My dad's CDV was a 1971 with leather, driven much harder and longer than my mom's Fleetwood. He sold it for like $300 when it had just sat for years in front of his house. 160,000 miles with no problems, aside from typical things such as brakes, an alternator and a water pump. I was amazed. The leather wore a bit on the drivers seat, yet never cracked.
My dad, love the guy, but he would sometimes take the budget way out of things, which is 180 degrees from me. He let the "vocation arts" students repaint his car, which had been a great metallic bronze. Not only did they have it for 5 months, it came back in a color best described as somewhere between salmon, almond and 1000 Island dressing. They said it was "close". Yechhh!
It did serve us very, very well however.