Thanks for posting the ads, very cool.
My first car was a 1974 Dodge Dart. the same blue color as the 1974 Plymouth Scamp in the ad posted.
I inherited it when I was about 17 and it was already 17 years old. My family got it with 80K on the clock. I got it when it had about 120K on the 318 (5.2L). What an experience. It was a stupid "My first car" attachment.
Terrible MPG, about 13.7MPG no matter what I did. I realized after some years of driving it the carb needed to be rebuild and a rebuild carb resulted in about 15+MPG, I think that was its potential. The slant six engine did better but not much. The combo I had was the 318 engine / 3 speed transmission which was actually fairly bulletproof. Everything else wasn't. I went through several alternators, a water pump.. one alt would go out, would get another one from a junk yard for $10 and install it myself in a few minutes. A long list of things I DIY being a poor college student.
It was the quintessential uncool car.
It had points.. not much power, 145HP. For the first year, I had to manually set the choke - (close when start the car, open when warmed up), the coil was broken. AC never worked so I did 4/80 AC on hot days. Door locks were broken and I ended up not ever locking it. Classic Chrysler rust around rear fenders and a hole formed in the trunk, after every rain, I would get a 2" puddle in the spare tire area. I carried tools with me and a spare gas can because the tank was so small and MPG was poor. Tiny space in the trunk. Bench seat, weird seat belts that you had to pull just right. Paint flaking off.
That was in the late 80's/early 90's and I really wanted a newer car, like 1987Chrysler New Yorker 5th Avenue with the same 318/3 speed, so it had the same guts in a better package (leather seats, no bench, etc.) except that it had one of these electronic feedback carbs with emissions stuff connected to it. Or Dodge Diplomat. Or Chrysler Cordova with the 360 as the paradigm of luxury. I don't think 1974 was the worst of the worst, 1976 Plymouth Volaire rusted so bad you could hear it rust at night.
For some reason I wanted a Plymouth station wagon and test drove a few old ones from the 70s, some GM cars with big blocks. Now that's an experience. Overall quality seemed abysmal and much emissions stuff under the hood, pounds of it. Reducing power, complicating repairs.
I never did wear out the 318/3 speed tranny in the Dart but it's everything else around it that was malfunctioning. Front end was weak.. Tiny gas tank relative to the thirsty V8, I ran out of gas more than once and carried a plastic 5 gallon jug in the trunk with the gas smell getting inside.. you get used to it. I miss those days in a strange way. When I was young, broke and drove a Dodge Dart with the entire tool set inside as something broke in it every 2-3 weeks it seemed.
You can look at it this way, the fact these 70's Chrysler ran for 20+ years and there were plenty on the roads in the 90's was a testament to their well engineered parts, at the same time, much was overlooked (rust-prone bodies). I recall in late 90's I wanted to upgrade to a newer Chrysler/Dodge and these cars were even more questionable, in retrospect - harder to work on, systematic tranny failures. 20 years later none are on the roads.