The 1999 MBNA Platinum 400 was the 13th stock car race of the 1999 NASCAR Winston Cup Series season and the 31st iteration of the event. The race was held on Sunday, June 6, 1999, in Dover, Delaware at Dover International Speedway, a 1-mile (1.6 km) permanent oval-shaped racetrack. The race took the scheduled 400 laps to complete. Depending on fuel mileage, Joe Gibbs Racing driver Bobby Labonte would manage to save enough fuel to almost lap the field to win his eighth career NASCAR Winston Cup Series victory and his first of the season.^[1][2] To fill out the podium, Hendrick Motorsports driver Jeff Gordon and Roush Racing driver Mark Martin would finish second and third, respectively.

Dover International Speedway is an oval race track in Dover, Delaware, United States that has held at least two NASCAR races since it opened in 1969. In addition to NASCAR, the track also hosted USAC and the NTT IndyCar Series. The track features one layout, a 1-mile (1.6 km) concrete oval, with 24° banking in the turns and 9° banking on the straights. The speedway is owned and operated by Dover Motorsports.

The track, nicknamed "The Monster Mile", was built in 1969 by Melvin Joseph of Melvin L. Joseph Construction Company, Inc., with an asphalt surface, but was replaced with concrete in 1995. Six years later in 2001, the track's capacity moved to 135,000 seats, making the track have the largest capacity of sports venue in the mid-Atlantic. In 2002, the name changed to Dover International Speedway from Dover Downs International Speedway after Dover Downs Gaming and Entertainment split, making Dover Motorsports. From 2007 to 2009, the speedway worked on an improvement project called "The Monster Makeover", which expanded facilities at the track and beautified the track. After the 2014 season, the track's capacity was reduced to 95,500 seats.

Qualifying was split into two rounds. The first round was held on Friday, June 4, at 3:30 PM EST. Each driver would have one lap to set a time. During the first round, the top 25 drivers in the round would be guaranteed a starting spot in the race. If a driver was not able to guarantee a spot in the first round, they had the option to scrub their time from the first round and try and run a faster lap time in a second round qualifying run, held on Saturday, June 5, at 11:30 AM EST. As with the first round, each driver would have one lap to set a time.^[3] Positions 26-36 would be decided on time, while positions 37-43 would be based on provisionals. Six spots are awarded by the use of provisionals based on owner's points. The seventh is awarded to a past champion who has not otherwise qualified for the race. If no past champion needs the provisional, the next team in the owner points will be awarded a provisional.^[8]

Bobby Labonte, driving for Joe Gibbs Racing, would win the pole, setting a time of 22.596 and an average speed of 159.320 miles per hour (256.401 km/h).^[9]

Three drivers would fail to qualify: Darrell Waltrip, Buckshot Jones, and Hut Stricklin.