Because there was little difference between these two years and the 1974 model run was only a few months long (ending in March '74), we have grouped the two model years together here on the same page. 1973 and 1974 saw the end of the first-generation Dodge Challenger after a brief and tumultuous foray into the muscle car market.
Chrysler decided that there wasn't much that needed changing for the 1971 model year, with the Challenger enjoying strong sales and plenty of enthusiasm on the street. Like the 1970 model year, you could get the 1971 Challenger with numerous engine options, from a relatively-benign straight-6 to thunderous hemi-V8's.
By the time the 70’s came to a close, Chevrolet and Ford (as well as some other enthusiastic parties) had plenty of vehicles to carry the muscle car moniker.. Mustang, Firebird, Camaro, Nova, Chevelle... the roster list was pretty substantial. Even Dodge had quite a few participants in the horsepower war with the Charger, Coronet, Dart, and Barracuda. 1970 was a tough year to start a legacy, but that didn’t stop the newcomer from leaving a powerful mark on the industry.
The changes that Chrysler was forced to make to the Challenger for the 1972 model year reduced performance significantly, with available engines reduced to just three: a 225 ci slant-6, a 318 ci V8, or a 340 ci V8. Buyers could choose from a 3-speed manual, 4-speed manual (340 ci V8 only), or an automatic transmission.