My experience with 1970s cars is mixed. I had two 1973 Ford LTDs which I loved, but one got wrecked by an illegal alien drunk driver while parked, and the other, which had a 429 cubic inch motor was stolen, even though it was locked and I had the key.
I also had a 1972 Chevy Impala which ran well after the tranny was rebuilt, but the metal under the back window rusted out, causing rainwater to flood into the trunk—a design flaw that plagued GM cars at the time.
My family bought a 1973 Pontiac Le Mans new, but it had a lot of problems. When we took it to the car wash for the first time, the trunk flooded because they forgot to put seals in the trunk at the factory. The motor mounts were too weak, and they had to be replaced. The alternator failed on the Hollywood Freeway, and we luckily coasted into the parking lot at Denny’s on Vignes in downtown Los Angeles—which is still there. Its life ended when it caught fire after I turned on the air conditioner—oddly enough, when I was driving around trying to find a new car. This car was designed by John DeLorean, and we figured he was probably on cocaine when he did so.
My first car was a 1973 Ford LTD. Bought it used in 1978. Great car.