Nascar officials said all four automakers’ redesigned Sprint Cup Series cars had been approved for next season.
Series officials announced Monday that the new Chevrolet SS, Dodge Charger, Ford Fusion and Toyota Camry designs have met the necessary targets for approval based on final aerodynamic tests July 18.
The new cars will make their racing debuts at Daytona International Speedway next February.
This approval is another step forward in the new-car process and permits manufacturers the ability to begin making parts and pieces for the new models.
“With all the designs and surface areas of the car now approved, manufacturers can now move forward with building the components needed to outfit their cars,” NASCAR vice president of competition Robin Pemberton said in a statement.
Ford, Toyota and Dodge already have revealed their 2013 models. Chevrolet has released only a camouflaged version of its SS, which is based on the Australian-built rear-wheel-drive Holden Commodore.
Cup teams will have the 2013 model for an Aug. 7-8 test at Martinsville Speedway that is aimed at rules tweaks to make the cars lighter and help Goodyear develop tires with more grip to improve racing.