The 2003 Budweiser Shootout was the first of two exhibition stock car races of the 2003 NASCAR Winston Cup Series. The 25th Budweiser Shootout, and the first to be held at night to allow for prime time broadcasting, it was held on February 8, 2003, in Daytona Beach, Florida, at Daytona International Speedway, before a crowd of 75,000 spectators. Dale Earnhardt Jr. of Dale Earnhardt, Inc. won the 70-lap race from 19th. Hendrick Motorsports's Jeff Gordon was second, with Roush Racing's Matt Kenseth third. It was Earnhardt's first Budweiser Shootout win, and his first at Daytona International Speedway in the Cup Series since the 2001 Pepsi 400.

Although Geoff Bodine won the pole position by lot, he was immediately passed by Jimmie Johnson into turn one. Kurt Busch led laps five through fifteen before Earnhardt passed him on lap sixteen and kept the lead until the mandatory ten-minute pit stop at the end of lap 20. Ten laps later, Gordon took the lead, which he held until all drivers made a second pit stop on the 50th lap, when Mark Martin took the lead. Gordon regained the lead on lap 56, which he held until Earnhardt passed him ten laps later. Earnhardt won the race by keeping the lead for the final four laps. No yellow flag cautions were issued during the race, which had 13 lead changes among seven different drivers.

The 2003 Budweiser Shootout was the first of two non-points scoring exhibition stock car races of the 2003 NASCAR Winston Cup Series,^[1] the 25th edition of the event,^[5] and the first time it was held at night,^[6] to enable a prime time broadcast.^[7] It was held on February 8, 2003 in Daytona Beach, Florida at Daytona International Speedway,^[1] a superspeedway that holds NASCAR races.^[8] Its standard track is a four-turn, 2.5-mile (4.0 km) superspeedway.^[9] Daytona's turns are banked at 31 degrees, and the front stretch (the location of the finish line) is banked at 18 degrees.^[9]

The Budweiser Shootout was created by Busch Beer brand manager Monty Roberts as the Busch Clash in 1979. The race, designed to promote Busch Beer, invites the fastest NASCAR drivers from the previous season to compete.^[10] The race is considered a "warm-up" for the Daytona 500.^[11] It was renamed the Bud Shootout in 1998. The name changed to the Budweiser Shootout in 2001, the Sprint Unlimited in 2013 and the Advance Auto Parts Clash in 2017.^[12]

The race was open to 19 drivers, including the 15 pole position winners from the 2002 season and four previous shootout winners.^[6] Races where qualifying was cancelled due to rain or where the points leader started from the pole position did not count.^[13] Tony Stewart was the race's defending champion.^[6] The race was 70 laps long, with two segments of 20 and 50 laps separated by a ten-minute pit stop.^[7] Teams could change tires, add fuel, and make normal chassis tweaks during the pit stop, but not springs, shock absorbers or rear ends. If the race was stopped, pit crews could work on their vehicles in the garage or on the pit road. Yellow caution and green-flag laps were scored, and the second segment would be extended beyond 50 laps if necessary. Every rolling restart had cars alongside each other in pairs, and all lapped competitors had to move to the rear of the field.^[14]

In other changes, NASCAR mandated all cars to run a 13.6-US-gallon (51 L; 11.3 imp gal) fuel cell from the standard 22-US-gallon (83 L; 18 imp gal) cells to try to have an additional pit stop and prevent multi-car accidents.^[15] The smaller fuel cells required teams to make an extra pit stop in the second segment.^[7] Furthermore, all teams were mandated to use a new car package, which underwent 18 changes to remove several aerodynamic differences (such as the rear spoiler and deck lid) between each of the four types Cup Series car to offer parity throughout the field. The redesigned car package's body design was uniform in the center, but the front and rear were reshaped slightly.^[5][16]

Two practice sessions were held on Friday before the race. The first session lasted for 55 minutes, and the second 60 minutes.^[2] Ryan Newman lapped fastest in the first practice session with a time of 48.330 seconds, ahead of Jeff Gordon, Stewart, Terry Labonte, Dale Earnhardt Jr., Kurt Busch, Jimmie Johnson, Bill Elliott, Matt Kenseth, and Ricky Rudd in positions second through tenth.^[17] Labonte ran faster in the final practice session, setting a lap of 47.787 seconds to pace the field; Earnhardt was second, and Stewart duplicated his first practice session result in third place. Mark Martin, Ward Burton, Kenseth, Kevin Harvick, Dale Jarrett, Ken Schrader, and Gordon completed the top ten quickest competitors.^[18]

For qualifying, the 19 entered drivers chose their starting positions by lot, a feature unique to the event.^[19] Geoff Bodine drew the pole position, with Johnson, Busch, Rudd and Kenseth in second through fifth.^[20] Ricky Craven drew sixth place, and Jarrett, Todd Bodine, Martin, and Burton selected positions seven, eight, nine and ten. Schrader, Stewart, Elliott, Rusty Wallace, Newman, Harvick, Labonte and Gordon drew the following eight placings. Earnhardt chose the race's 19th and final starting position.^[19] Once the lot was completed, Bodine said, "This is what's called brotherly love and I'm happy to be able to help Brett out. It's a tune up for Brett to get ready for the 125s (qualifying races) and the Daytona 500. I love my brothers Brett and Todd. When we put our helmets on it gets a little heated, but this is going to be a lot of fun."^[21]

The 70-lap race commenced at 8:00 p.m. Eastern Standard Time (UTC−05:00), and was broadcast live in the United States on Fox.^[13] Commentary was provided by play-by-play announcer Mike Joy, with analysis from three-time Cup Series champion Darrell Waltrip, and former crew chief Larry McReynolds.^[2] Around the start of the race, weather conditions were clear with the air temperature at 52 °F (11 °C); a 60 percent chance of rain was forecast though none fell on the circuit.^[22] Hal Marchman, pastor of Central Baptist Church in Daytona Beach, began pre-race ceremonies with an invocation. Country music group SHeDAISY performed the national anthem, and actress and model Susan Ward commanded the drivers to start their engines.^[23] No driver moved to the rear of the field during the pace laps.^[2]

At the start, Bodine was passed by Johnson entering turn one.^[22] He felt a tire rubbing against the car's bodywork on lap three.^[2] Bodine entered the garage on that lap,^[2] where suspension damage was discovered, necessitating his retirement from the race on lap four.^[24] Every driver was separated by seven-tenths of a second after the first four laps.^[25] Johnson lost the lead to Busch on lap five.^[1] Busch led the next ten laps until Earnhardt overtook him in turn three to lead the 16th lap.^[22][26] During the three-abreast racing,^[27] Wallace's left-rear tire lost pressure and burst two laps later, slowing him.^[24][28][29] He remained on the lead lap,^[24] because the ten-minute pit stops for tires, fuel and car adjustments followed soon after on lap 20.^[30] At this point, Earnhardt led Busch, Johnson, Gordon and Kenseth.^[25] Earnhardt told his crew chief Tony Eury Jr. he wanted fuel, tires and no chassis adjustments because he felt comfortable with his car.^[22]

Once green flag racing resumed, Kenseth overtook Earnhardt on the outside for the lead on lap 22.^[24] Both drivers exchanged first place over the next seven laps,^[1] until Gordon executed a bump and run technique on Kenseth in the first turn for the lead on lap 30.^[24][25] On the 50th lap, every driver made a second pit stop. Most drivers had two tires installed to their cars, though Johnson's pit crew replaced all four of his tires.^[2] Martin, Schrader, Todd Bodine and Rudd made fuel stops;^[27] after all the pit stops were completed, Martin took the lead on lap 52,^[1] as varying team strategies changed the running order.^[31] Martin led the next four laps before Gordon passed him to return to the lead.^[24] Earnhardt moved to fifth by the 59th lap, before advancing to third soon after.^[30] Earnhardt steered left on lap 64 to try a pass on Gordon for the lead, but was unable to complete it since there were no car to provide drafting assistance,^[24] leading Gordon to believe the inside was the best position to race in.^[30]

Earnhardt signaled to Newman two laps later that he needed drafting assistance.^[5] Newman clung onto Earnhardt's back bumper panel,^[22] moving the latter past Gordon on the outside lane at turn three for the lead.^[27][29] Gordon could not respond to Earnhardt in the final four laps, as the remainder of the field went two abreast behind him.^[27] Earnhardt held off Gordon and Kenseth to win from last on the grid.^[30] It was Earnhardt's maiden Budweiser Shootout victory,^[22] and his first at Daytona International Speedway in the Cup Series since the 2001 Pepsi 400.^[30] Gordon finished second, Kenseth third, Newman fourth, and Burton fifth.^[1] Schrader was in second in the final seven laps as a tailwind increased his top speed,^[32] but fell to sixth after a failed overtake to Earnhardt's outside.^[33] Johnson, Rudd, Harvick, and Craven completed the top ten finishers.^[1] The first 15 drivers finished within a second of one other.^[7] No yellow caution flags were issued since no driver had an accident or collided with another car,^[28] and there were 13 lead changes among seven different participants.^[27] Gordon's 31 laps led was the most of any competitor. Earnhardt led four times for 13 laps.^[1]