Chevrolet Vega Cosworth
The Chevrolet Vega Cosworth claims its place among the worst muscle cars due to a combination of mechanical issues and unmet performance expectations. Introduced in the mid-’70s, the Vega Cosworth aimed to bring a performance edge to the Vega line. However, engine reliability problems and a failure to deliver on promised power tarnished its reputation. The Vega Cosworth’s ambitious goals were overshadowed by its shortcomings, marking it as a regrettable entry in Chevrolet’s muscle car history.