10. 1972 Dodge Challenger
The 1972 Dodge Challenger, while retaining its iconic and fearsome exhaust note, suffered from significant performance reductions due to stringent emissions regulations. The 340-cubic-inch V8 engine, previously a powerhouse, was detuned to produce only 240 horsepower, a notable decrease from its earlier output. This reduction, coupled with the shift from gross to net horsepower ratings, made the Challenger’s performance fall short of its aural promise. The 318-cubic-inch V8, now producing 150 horsepower, and the 225-cubic-inch Slant Six with 110 horsepower, further emphasized the model’s transition from muscle car to a more subdued cruiser. (musclecarfacts.com)