What Is 2005 NASCAR Nextel Cup Series

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Last updated: April 15, 2026

Quick Answer: The 2005 NASCAR Nextel Cup Series was the 57th season of NASCAR's top racing series, running from February to November 2005 with 36 races; Tony Stewart won his second consecutive championship.

Key Facts

The 2005 NASCAR Nextel Cup Series began on February 20 with the Daytona 500 and ended on November 20 with the Ford 400.
Tony Stewart won his second consecutive NASCAR championship, becoming the first driver to do so since Jeff Gordon in 1998.
Dale Earnhardt Jr. won the most races in 2005 with six victories.
The series featured 36 points races and included the inaugural Chase for the Championship format with 10 drivers.
Jimmie Johnson finished second in the final standings, just 35 points behind Stewart.

Overview

The 2005 NASCAR Nextel Cup Series marked the 57th season of NASCAR's premier racing division, transitioning from the Winston Cup era to the Nextel sponsorship era. This season introduced the revised 'Chase for the Championship' playoff format, which reshaped how titles were contested over the final 10 races.

Competition spanned 36 races across the United States, starting with the Daytona 500 and concluding with the Ford 400 at Homestead-Miami Speedway. The season featured intense rivalries, dramatic finishes, and record-breaking performances, solidifying its place as one of NASCAR’s most memorable campaigns.

Tony Stewart won his second consecutive championship, becoming the first driver since Jeff Gordon in 1998 to achieve back-to-back titles.
Dale Earnhardt Jr. led all drivers with six race victories, including wins at Daytona, Talladega, and Michigan.
The season kicked off on February 20, 2005, with the Daytona 500, won by Jeff Gordon in a rain-shortened event.
NASCAR implemented the Chase for the Championship format, narrowing the title contenders to 10 drivers after 26 races.
Jimmie Johnson finished just 35 points behind Stewart in the final standings, making it one of the closest championship battles in recent history.

How It Works

The 2005 season operated under NASCAR's updated points and playoff structure, designed to increase excitement and viewer engagement during the final stretch of the season.

Chase for the Championship: Introduced in 2004 and refined in 2005, this playoff system included the top 10 drivers in points after 26 races, resetting their standings to create a tighter title race.
Points System: Drivers earned 185 base points for a win, with additional points for leading laps and leading the most laps, totaling up to 195 points per race.
Regular Season: The first 26 races determined which drivers qualified for the Chase, based on cumulative points and win totals.
Playoff Reset: After Race 26, the top 10 drivers had their points reset within a forfeited gap of 1,000 points, with tiebreakers based on wins.
Final 10 Races: The Chase spanned the last 10 events, including tracks like Martinsville, Atlanta, and Homestead, where consistency and performance were critical.
Manufacturer Competition:Chevrolet dominated the season with 15 wins, followed by Dodge with 11 and Toyota making its debut in select races.

Comparison at a Glance

Here’s how the top contenders in the 2005 NASCAR Nextel Cup Series compared across key performance metrics:

Driver	Wins	Top 5s	Top 10s	Championship Points
Tony Stewart	4	16	22	6,500
Jimmie Johnson	4	17	23	6,465
Dale Earnhardt Jr.	6	14	20	6,295
Kurt Busch	1	12	19	6,150
Mark Martin	0	10	17	6,080

The table highlights how consistency in top finishes, rather than just wins, influenced the final standings. Despite Dale Earnhardt Jr.'s series-leading six victories, his inconsistent finishes outside the top 10 cost him the title. Tony Stewart’s ability to remain competitive throughout the Chase, including three top-five finishes in the final five races, secured his championship.

Why It Matters

The 2005 NASCAR Nextel Cup Series had a lasting impact on the sport, both in terms of competition structure and fan engagement. Its playoff format became a model for other racing series and major sports leagues looking to boost late-season excitement.

The Chase format introduced in 2004 and refined in 2005 kept fans engaged through the final races, increasing TV ratings by 12% compared to previous seasons.
Tony Stewart’s back-to-back titles solidified his legacy as one of NASCAR’s most versatile and aggressive drivers of the 2000s.
Dale Earnhardt Jr. remained a fan favorite, winning the NASCAR Most Popular Driver Award for the fifth consecutive year.
The season marked Nextel’s second year as title sponsor, helping modernize NASCAR’s image with wireless technology integrations.
It set the stage for Jimmie Johnson’s rise, who would go on to win five consecutive championships from 2006 to 2010.
The increased manufacturer rivalry between Chevrolet, Ford, and Dodge intensified competition, leading to tighter engineering and marketing strategies.

Overall, the 2005 season was a pivotal moment in NASCAR history, blending dramatic racing with structural innovation, and setting the tone for the sport’s evolution in the 21st century.