See post #6. Some were terrible. My ‘Cuda was really nothing more than a streamlined Valiant, one of the icons of dependability in that era. It had a 318 V8 that very reliable and was actually made for bigger cars and trucks. Pushed a compact car around very well.
I had a 1968 Charger, and made deliveries in NYC with a Dodge van, both 318 powered with Torqueflites. Those engines and transmissions were virtually indestructible. My dad made the mistake of buying a Chevy Vega at that time. Even though my Charger used twice as much gas, it was actually cheaper to drive because the Vega was such an unreliable a** bucket.