23. Jeep Commando
The U.S. car industry slowly accepted the V6 configuration. But Buick was the first company in the early ’60s with a V6 engine, which was basically a chopped-off V8. However, the Jeep Commando was the first successful model that used a V6.
It showed how this type of engine was more than enough to power this capable off-roader. Interestingly, under the hood was a 225 V6 Buick built and named the Dauntless V6.