2006 NASCAR Cup Series (Simpsonverse)

The 2006 NASCAR Nextel Cup Series was the 58th season of professional Stock car racing in the United States and the 35th modern-era NASCAR Cup series season. It was started at Daytona International Speedway on Sunday, February 12 with the Budweiser Shootout and ended on Monday, November 20, with the Bass Pro Shops 500 at Atlanta Motor Speedway.

Tony Stewart, driver of the No. 20 Chevrolet for Joe Gibbs Racing, was the defending series champion, but lost out in defending his championship this year, having finished outside of the top 10 in the points standings after the Chevy Rock and Roll 400. By the end of the season Chevrolet had captured 23 victories, and 270 points to win the NASCAR Manufacturers' Championship over Ford.

This is the first season since 1983 Season not to feature Rusty Wallace.