- 2021 Buschy McBusch Race 400 Results Stock Car Online Results Reference
- 2021 Buschy McBusch Race 400 Results Stock Car Online Results Reference
| fin | qual | driver | team | laps led | car | sponsor | pts | laps | status |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 9 | Kyle Busch | Joe Gibbs Racing | 20 | #18 Toyota Camry | M&M's Mix | 59 | 267 | Finish |
| 2 | 4 | Kevin Harvick | Stewart-Haas Racing | 0 | #4 Ford Mustang | Busch Light For The Farmers | 40 | 267 | Finish |
| 3 | 1 | Brad Keselowski | Team Penske | 72 | #2 Ford Mustang | Verizon 5G | 48 | 267 | Finish |
| 4 | 5 | Matt DiBenedetto | Wood Brothers Racing | 0 | #21 Ford Mustang | Dickies \ Menards | 33 | 267 | Finish |
| 5 | 17 | Chase Elliott | Hendrick Motorsports | 0 | #9 Chevy Camaro | UniFirst | 43 | 267 | Finish |
| 6 | 15 | Martin Truex Jr | Joe Gibbs Racing | 0 | #19 Toyota Camry | Auto-Owners Insurance | 35 | 267 | Finish |
| 7 | 11 | Tyler Reddick | Richard Childress Racing | 0 | #8 Chevy Camaro | Childress Vineyards | 41 | 267 | Finish |
| 8 | 16 | Chris Buescher | RFK Racing | 13 | #17 Ford Mustang | autoTempest | 29 | 267 | Finish |
| 9 | 2 | William Byron | Hendrick Motorsports | 0 | #24 Chevy Camaro | Axalta | 34 | 267 | Finish |
| 10 | 6 | Austin Dillon | Richard Childress Racing | 0 | #3 Chevy Camaro | Bass Pro Shops/Tracker Off Road | 27 | 267 | Finish |
| 11 | 21 | Daniel Suárez | Trackhouse Racing | 0 | #99 Chevy Camaro | Camping World | 26 | 267 | Finish |
| 12 | 20 | Denny Hamlin | Joe Gibbs Racing | 7 | #11 Toyota Camry | FedEx Freight | 35 | 267 | Finish |
| 13 | 3 | Michael McDowell | Front Row Motorsports | 0 | #34 Ford Mustang | CarParts.com | 24 | 267 | Finish |
| 14 | 24 | Ross Chastain | Chip Ganassi Racing | 0 | #42 Chevy Camaro | Clover | 23 | 267 | Finish |
| 15 | 28 | Kurt Busch | Chip Ganassi Racing | 0 | #1 Chevy Camaro | Monster Energy | 22 | 267 | Finish |
| 16 | 14 | Ryan Newman | RFK Racing | 0 | #6 Ford Mustang | Hy-Vee | 21 | 267 | Finish |
| 17 | 29 | Joey Logano | Team Penske | 0 | #22 Ford Mustang | AAA Insurance | 20 | 267 | Finish |
| 18 | 25 | Alex Bowman | Hendrick Motorsports | 0 | #48 Chevy Camaro | Ally | 19 | 267 | Finish |
| 19 | 32 | Kyle Larson | Hendrick Motorsports | 132 | #5 Chevy Camaro | Hendrickcars.com | 37 | 267 | Finish |
| 20 | 19 | Chase Briscoe | Stewart-Haas Racing | 0 | #14 Ford Mustang | HighPoint.com | 17 | 267 | Finish |
| 21 | 7 | Ryan Blaney | Team Penske | 0 | #12 Ford Mustang | Menards \ Moen | 24 | 267 | Finish |
| 22 | 38 | Austin Cindric | Team Penske | 0 | #33 Ford Mustang | Verizon 5G | 0 | 267 | Finish |
| 23 | 22 | Anthony Alfredo | Front Row Motorsports | 0 | #38 Ford Mustang | Dude Wipes | 14 | 266 | Finish |
| 24 | 10 | Cole Custer | Stewart-Haas Racing | 0 | #41 Ford Mustang | HaasTooling.com | 13 | 266 | Finish |
| 25 | 27 | Erik Jones | Legacy Motor Club | 0 | #43 Chevy Camaro | Black Entrepreneur Initiative | 12 | 266 | Finish |
| 26 | 13 | Bubba Wallace | 23XI Racing | 0 | #23 Toyota Camry | Dr. Pepper Zero Sugar | 11 | 266 | Finish |
| 27 | 26 | Corey LaJoie | Spire Motorsports | 0 | #7 Chevy Camaro | NationsGuard | 10 | 265 | Finish |
| 28 | 8 | Christopher Bell | Joe Gibbs Racing | 0 | #20 Toyota Camry | Rheem | 12 | 265 | Finish |
| 29 | 18 | Aric Almirola | Stewart-Haas Racing | 0 | #10 Ford Mustang | Smithfield \ Price Chopper | 8 | 264 | Finish |
| 30 | 31 | Justin Haley | Spire Motorsports | 0 | #77 Chevy Camaro | NASCAR TRUCKS AT KNOXVILLE | 0 | 263 | Finish |
| 31 | 30 | BJ McLeod | Live Fast Motorsports | 0 | #78 Ford Mustang | Celsius | 0 | 260 | Finish |
| 32 | 12 | Ryan Preece | JTG Daugherty Racing | 0 | #37 Chevy Camaro | Nature Valley | 5 | 259 | Accident |
| 33 | 36 | Garrett Smithley | Rick Ware Racing | 0 | #53 Chevy Camaro | Smart Sanitizer | 0 | 259 | Finish |
| 34 | 23 | Ricky Stenhouse Jr | JTG Daugherty Racing | 23 | #47 Chevy Camaro | Kroger/Energizer | 3 | 258 | Accident |
| 35 | 35 | Joey Gase | Rick Ware Racing | 0 | #15 Chevy Camaro | Explore Branson | 0 | 258 | Finish |
| 36 | 33 | Cody Ware | Rick Ware Racing | 0 | #51 Chevy Camaro | Nurtec ODT | 0 | 257 | Finish |
| 37 | 34 | Quin Houff | StarCom Racing | 0 | #00 Chevy Camaro | 8 Ball Chocolate Whiskey | 1 | 256 | Finish |
| 38 | 39 | Matt Mills | B.J. McLeod Motorsports | 0 | #55 Ford Mustang | Siebert Electric/J.F. Electric | 0 | 255 | Finish |
| 39 | 37 | Josh Bilicki | Rick Ware Racing | 0 | #52 Ford Mustang | RBR Aviation | 1 | 250 | Finish |