General Motors has postponed the launch of three planned variants of its new Chevrolet Camaro.
The Z28 high-performance model, convertible and four-cylinder versions of the Camaro are all affected.
GM started to ship coupe Camaros to US Chevrolet dealers this week, and Z28 and convertible versions were expected to follow next year.
However, with GM slashing budgets as it fights to save money, the Z28 and convertible have been delayed.
Meanwhile, falling fuel prices have made a four-cylinder version of the car unnecessary. The V6 Camaro has also produced impressive fuel economy figures, further reducing the need for a more economical four-cylinder model.
A Chevrolet spokesman said neither the Z28 or convertible had been completely cancelled. He insisted that the company was still hopeful of releasing at least the drop-top in 2011.