The 2012 NASCAR Sprint Cup Series was the 64th season of NASCAR professional stock car racing in the United States and the 41st modern-era Cup season. The season started on February 18, 2012, at Daytona International Speedway, with the Budweiser Shootout, followed by the Daytona 500 on February 27. The season continued with the Chase for the Sprint Cup beginning on September 16 at Chicagoland Speedway and concluded with the Ford EcoBoost 400 on November 18 at Homestead-Miami Speedway.

During the 2011 season, NASCAR announced the Sprint Cup Series would be changing to fuel injection from carburetors, which had been used since NASCAR's founding in 1949. Sprint Nextel announced at the 2011 Awards Ceremony that they had extended their sponsorship of the series until 2016. Roger Penske won the Owners' Championship, while Brad Keselowski won the Drivers' Championship at the final race of the season. Chevrolet won the Manufacturers' Championship with 249 points. Keselowski became the first Dodge driver to win the championship since Richard Petty in 1975; he was also the last Dodge driver to do so, as 2012 was the manufacturer's final year in the Cup series. It was the first time since 2004 that the championship was won by someone other than Tony Stewart or Jimmie Johnson. Despite starting his season late, Stephen Leicht was the 2012 NASCAR Rookie of the Year after beating Josh Wise.^[1]

2012 was the final season that the fifth-generation cars (also known as the Car of Tomorrow)–which debuted in the 2007 season–were used in competition; as the new Generation 6 cars were introduced for the 2013 season.

On September 28, 2011, the final calendar was released containing 36 races, with the addition of two exhibition races. The schedule also includes two Gatorade Duels, which are the qualifying races for the Daytona 500.^[25]

Pre-season testing began on January 12, 2012, with NASCAR Preseason Thunder at Daytona International Speedway in Daytona Beach, Florida. The tests lasted three days, with each having a morning and afternoon session. In the morning session on the first day, Jeff Gordon was quickest ahead of Paul Menard and Kurt Busch with a time of 46.687 seconds.^[30] The afternoon test session featured limited tandem drafting, and Kyle Busch and six other cars broke the 200 MPH mark. Defending champion Tony Stewart stated his excitement for returning to Daytona, "Our sport is unique obviously having our biggest race the first race of the year, but it's very fitting at the same time because this race, we have more time during the offseason to prepare for this race than we do the others. You bring cars here that you have the extra time to just make them that little bit nicer than you normally have time to do."^[31]

On the second day, Martin Truex Jr. was quickest in the morning session after posting a time of 43.962 seconds, while Kurt Busch was quickest in the afternoon with a time of 43.677.^[32] The final day of testing was led by Jeff Gordon who topped the charts. The final day focused on neutralizing the controversial two-car draft. The third day of testing focused on drafting, and Vice President of Competition Robin Pemberton was pleased with the progress drivers and teams had made. "The way the cars run in the draft, the way they can draft and do draft and what they do to get their cars running to their maximum potential. So far, we like what we've seen. It's been a good mix of what they can do in a larger pack and how close they can get for a limited time to push."^[33]

This section does not cite any sources. (November 2023)

The season began with the annual Budweiser Shootout. Multiple cautions stemming from tight pack racing whittled down the field to only a few cars. On the last lap, Kyle Busch used a slingshot move to pass defending champion Tony Stewart to win his first Shootout. In the Duels, defending champion Tony Stewart held off the field for his third Duel victory, while Roush Fenway Racing teammates Matt Kenseth and Greg Biffle dominated the second duel, with Kenseth prevailing. In the season opening Daytona 500, persistent showers on February 26 forced the race to be postponed to Monday for the first time in its 53-year history. Starting at night, the race would take its most dramatic turn when Juan Pablo Montoya, attempting to catch up with the field under caution, had a part failure on his car, which veered up the racetrack into a jet dryer, sparking a brief fire that forced a 2-hour red flag, causing the race to run into Tuesday (another first). After the flag was lifted, Kenseth held off teammate Biffle and Dale Earnhardt Jr. on a green-white-checkered finish to win his second Daytona 500 and capture Jack Roush's 300th victory in NASCAR.

The next week in Phoenix, Kevin Harvick dominated the race, but Denny Hamlin grabbed the lead late, and held off Harvick for his first win of 2012. The next week in Las Vegas, Tony Stewart dominated the race once again and held off Jimmie Johnson on a late restart to grab his first win of 2012 and his first at Las Vegas. The first short track race was at Bristol, and Brad Keselowski dominated the race, leading 232 laps and rolling to his first win of the season. The following weekend in California, Kyle Busch led for 80 laps, but Tony Stewart stayed on track when the rain came on lap 124, and was declared the winner when the race was called on lap 129. The next race at Martinsville, Jeff Gordon dominated the race, leading 329 laps. However, a late crash caused by Clint Bowyer and Jimmie Johnson set up a green-white-checkered finish, enabling Ryan Newman to take the lead and hold of A. J. Allmendinger for the win.

After an off-week, the teams returned to action at Texas. There, Greg Biffle held off Jimmie Johnson and grabbed his first win in 49 races. The next week at Kansas, Denny Hamlin held off a dominant Martin Truex Jr. to take his second win of 2012 under Darian Grubb. At Richmond, Carl Edwards dominated the race before a black flag on the restart knocked him out of contention. Tony Stewart held the point, but got caught up by a faulty final stop. Kyle Busch then inherited the lead to take his first win of 2012 and his fourth consecutive spring Richmond win. The series traveled to Talladega for its second superspeedway race of the year. After a flurry of late race cautions took out a number of contenders, Brad Keselowski, with help from Kyle Busch, drove past Daytona 500 winner Matt Kenseth and Greg Biffle to take his second win of 2012. At the Southern 500, Jimmie Johnson dominated the field, but stayed on track during the final round of pit stops on the advice of Chad Knaus and held off Denny Hamlin for his first win of 2012 and Rick Hendrick's 200th victory. At the Sprint All-Star Race, Dale Earnhardt Jr. and A. J. Allmendinger raced into the main event via finishing 1–2 in the Sprint Showdown, while veteran Bobby Labonte won the fan vote to transfer in. A slow restart after the fourth segment by Matt Kenseth allowed Jimmie Johnson to cruise to his third All-Star win. The following was NASCAR's longest race, the Coke 600. Greg Biffle once again had the dominant intermediate car, but Kasey Kahne drove past Denny Hamlin and teammate Dale Earnhardt Jr. on the final restart to take his first win of 2012 with Hendrick Motorsports.

The series moved to Dover, where Jimmie Johnson dominated the field and cruised to his second win of the year. At the repaved Pocono, polesitter Joey Logano pulled a bump and run on former mentor Mark Martin to score his first win since 2009. At a repaved Michigan, drivers had to contend with a new tire as well as a pre-race shower. Once the race got underway, Dale Earnhardt Jr. dominated the race, leading 95 laps en route to his first victory in 143 races. At Sonoma, Clint Bowyer dominated the race, leading 71 laps and holding off Tony Stewart and Kurt Busch on a green-white-checkered finish to win his first race with Michael Waltrip Racing. In the series return to Kentucky, Kyle Busch dominated the early stages of the race until a broken shock took him out of contention. A late crash by Ryan Newman set up a fuel mileage race, and Brad Keselowski took the lead and preserved enough fuel for his third win of the year. On the return trip to Daytona, the Roush duo of Matt Kenseth and Greg Biffle dominated the race. A late push from Kasey Kahne handed Tony Stewart the lead as well as his fourth Daytona victory. The next stop was Loudon, where Denny Hamlin dominated the race, leading 150 laps. However, a decision to take four tires on a final stop dropped him to 13th. Kasey Kahne held the lead on the final restart and held off a surging Hamlin for his second win of 2012.

After a week off, the Cup Series returned to action at the famed Brickyard. Denny Hamlin dominated the initial stages of the race, but lost the lead to Jimmie Johnson after a cycle of green flag pit stops on lap 30. From there, Johnson took over the lead and easily held off Kyle Busch for his 4th Brickyard victory. Moving for its return trip to Pocono, rain plagued the race all day, wreaking havoc on championship contenders. However, Jeff Gordon moved through a late wreck to shake off the bad luck and take his first win of the year; the race was called after 98 laps due to a second rainstorm that hit the circuit after earlier rain had delayed the start. The Cup Series made its final road course stop of the season at Watkins Glen. In a repeat of last year's race, Kyle Busch, Brad Keselowski and Marcos Ambrose dominated the day, but Busch, appearing on his way to a second win, spun in the esses with 2 laps to go, while Ambrose pulled a bump and run on Keselowski in turn 9, holding him off for the win. The drivers returned to Michigan, where polesitter Mark Martin dominated the early stages of the race until he was involved in a wreck with Kasey Kahne. Jimmie Johnson took the lead in the late stages of the race until his engine blew on lap 195, setting up a green-white-checkered finish. Greg Biffle took the lead and held off Brad Keselowski and Kasey Kahne for his second win of 2012.

Heading to a newly configured Bristol, Joey Logano dominated the early stages of the race, leading 139 laps. The lead changed hands multiple times as pit strategy dictated the nature of the race. Carl Edwards in need of a victory, stayed out after a caution involving polesitter Casey Mears. However, he dropped through the pack, handing the lead over to Denny Hamlin, who held off Jimmie Johnson for his third win of the season. At Atlanta, the battle up front was contested between Kevin Harvick and Denny Hamlin. However, Martin Truex Jr. got out front until a late crash by Jamie McMurray brought the field down pit road, and Hamlin exiting first. Hamlin then held off Jeff Gordon on a green-white-checkered for a series high 4th win of the season. At the final regular season race at Richmond, the wild card contenders attempted to get into victory lane to make the Chase field. Denny Hamlin dominated the first half of the race, leading 202 laps. However, a caution for rain on lap 276 shuffled the running order significantly. Clint Bowyer inherited the lead on lap 312, stretching his fuel mileage and holding off Jeff Gordon for his second win of the season. Gordon, despite falling a lap down early on, rallied to leapfrog Kyle Busch for the second wild card position in the Chase.

The Chase for the Sprint Cup kicked off at Chicagoland Speedway. Polesitter Jimmie Johnson dominated the race, leading 172 laps. However, Brad Keselowski got ahead of Johnson after the final round of pit stops, enabling Keselowski to pull away and score his fourth win of the season. At Loudon, Denny Hamlin backed up a promise he made on Twitter (later stating it was overblown) to win the race, and led 193 laps despite starting 32nd to take his fifth win of the season. The following week at Dover, the JGR duo of Kyle Busch and Denny Hamlin dominated the race. However, a lack of cautions in the race set up a fuel mileage race, forcing the duo to pit. June winner Jimmie Johnson attempted to take advantage, only to be forced to conserve fuel. Brad Keselowski inherited the point and managed to stretch his fuel to take his 5th win of the year as well as the points lead. The teams returned to Talladega, where a lack of cautions produced differing pit strategies between the teams. At the end, the race was about to come down to fuel mileage when leader Jamie McMurray spun with 6 to go. Matt Kenseth stayed out on track and stayed in front of the field when "The Big One" erupted, handing him his second win of 2012.

The Chase reached the halfway mark at Charlotte. Points leader Brad Keselowski dominated the race, looking to pad his points lead. However, Keselowski pitted one lap too late on his final stop and ran out of fuel on pit road, dashing his hopes for a win. Clint Bowyer, who pitted on lap 278, stretched his fuel mileage and held off Denny Hamlin for his third win of the season to tighten the points race. The series returned to Kansas, where a recent repave turned the race into a war of attrition. Matt Kenseth stayed out during the final caution and ran away from the field to pick up his third win of the season. The series headed back to Martinsville, where polesitter Jimmie Johnson dominated the race, capturing his 4th win of the season. At Texas, Johnson once again dominated from pole and held off a late charge from championship contender Brad Keselowski to take his second win in a row. The penultimate race at Phoenix was dominated by Kyle Busch. However, the championship race took a significant turn when points leader Johnson crashed out of the race. Bowyer who was third in the point standings was also knocked out of the championship contention after being intentionally wrecked by Jeff Gordon on lap 311. At the end of the race, winless Kevin Harvick would take the lead and capture his first win in 44 races. At the season finale in Homestead, the race once again came down to fuel mileage. Jimmie Johnson attempted to make the race on one less stop than his competitors, but was knocked out of contention for the win and the Championship when the drive train failed. Teammate Jeff Gordon took the point on lap 254 and used Johnson's strategy to take his first win at Homestead, while points leader Brad Keselowski finished 15th to secure his and Roger Penske's first Sprint Cup Championship.

• 2012 NASCAR Nationwide Series
• 2012 NASCAR Camping World Truck Series
• 2012 NASCAR K&N Pro Series East
• 2012 ARCA Racing Series
• 2012 NASCAR Canadian Tire Series
• 2012 NASCAR Toyota Series
• 2012 NASCAR Stock V6 Series
• 2012 Racecar Euro Series