2011 NASCAR Sprint Cup Series

The 2011 NASCAR Sprint Cup Series was the 63rd season of professional stock car racing in the United States and the 40th modern-era Cup series season. The season included 36 races and two exhibition races, beginning with the Daytona 500 at Daytona International Speedway and ending with the Ford 400 at Homestead-Miami Speedway. The final ten races were known as 2011 Chase for the Sprint Cup.

The 2011 season is considered by many to be one of the greatest and most exciting seasons in Cup Series history.^[1][2] It had the closest points battle in history, with Tony Stewart winning the Drivers' Championship with a victory at the final race of the season in a tiebreaker over Carl Edwards due to having five wins on the season vs. Edwards' one win. To much surprise, Stewart, after barely making the Chase that year and having zero wins when the postseason began, went on to win five of the final ten races and then the title over Edwards, who led the points for most of the year despite only scoring one win early in the season at the Las Vegas. There were eighteen different race winners, the most since 2002. There were also five first-time Cup Series winners, most notably Trevor Bayne, the first of those, with his upset win in the Daytona 500 in just his second career Cup race. The other first-time winners were Regan Smith at Darlington, David Ragan at Daytona in July, Paul Menard at Indianapolis, and Marcos Ambrose at Watkins Glen. Some of those races the first-time winners won are also the biggest and most prestigious on the schedule. In addition, Jimmie Johnson's photo finish win over Clint Bowyer at the spring Talladega race became tied (with Ricky Craven's photo finish with Kurt Busch at Darlington in 2003) for the closest finish in the series, and six other races were decided by a margin of 0.059 or fewer.

During the 2010 season, NASCAR announced several calendar changes for 2011, including race additions at Kansas Speedway and Kentucky Speedway, and the removal of one race each from Atlanta Motor Speedway and Auto Club Speedway. Once the 2010 season had concluded, NASCAR also announced changes to the point system, and that the fuel changed from Sunoco unleaded to an ethanol blend called 'Sunoco Green E15'.

In addition, Stewart-Haas Racing, owned by Stewart and Gene Haas, won the Owners' Championship, while Chevrolet won their ninth-consecutive Manufacturers' Championship with 248 points. Stewart became the first owner-driver to win a Cup title since Alan Kulwicki in 1992.

Jimmie Johnson's streak of winning five consecutive Cup Series championships ended in 2011, and he finished sixth in points this season.

That was first season without the 2-time winner & 4-time polesitter John Andretti since 1992, he unexpectedly died in 2020.

This was the final season Cup cars would use carburetors in the engines which goes back to the NASCAR Cups first season in 1949. In 2012 the series would shift to fuel injection.