Unofficial test speeds from organizational Next Gen testing for the NASCAR Cup Series on Oct. 11-12 at Charlotte Motor Speedway’s road course. Note that times are unofficial, with no technical inspection conducted before each session.
Day 1
| Pos. | No. | Driver(s) | Best time |
Diff. | Best speed | Make | Team |
| 1 | 4 | Chase Briscoe | 01:20.2 | — | 104.115 | Frd | SHR (black) |
| 2 | 47 | Ricky Stenhouse Jr. | 01:21.3 | -1.069 | 102.746 | Chv | JTG Daugherty Racing |
| 3 | 12 | Ryan Blaney | 01:21.7 | -1.497 | 102.208 | Frd | Penske |
| 4 | 16 | AJ Allmendinger | 01:22.0 | -1.803 | 101.826 | Chv | Kaulig Racing |
| 5 | 8 | Tyler Reddick | 01:22.3 | -2.05 | 101.521 | Chv | RCR |
| 6 | 5 | Kyle Larson / Chase Elliott | 01:22.4 | -2.212 | 101.321 | Chv | HMS |
| 7 | 14 | Cole Custer | 01:22.5 | -2.253 | 101.271 | Frd | SHR (blue) |
| 8 | 7 | Corey LaJoie | 01:22.6 | -2.426 | 101.059 | Chv | Spire Motorsports |
| 9 | 21 | Austin Cindric | 01:22.7 | -2.443 | 101.038 | Frd | Wood Brothers |
| 10 | 22 | Joey Logano | 01:22.7 | -2.506 | 100.961 | Frd | Penske |
| 11 | 51 | Joey Hand | 01:22.7 | -2.521 | 100.943 | Frd | Petty Ware |
| 12 | 43 | Erik Jones | 01:22.8 | -2.556 | 100.900 | Chv | RPM |
| 13 | 27 | Loris Hezemans | 01:23.1 | -2.901 | 100.481 | Frd | Team Hezeberg |
| 14 | 0 | Kaz Grala | 01:23.3 | -3.075 | 100.271 | Chv | StarCom |
| 15 | 99 | Daniel Suarez | 01:23.4 | -3.150 | 100.181 | Chv | Trackhouse |
| 16 | 42 | Ross Chastain | 01:23.6 | -3.347 | 99.945 | Chv | CGR |
| 17 | 48 | Alex Bowman | 01:23.6 | -3.369 | 99.919 | Chv | HMS |
| 18 | 17 | Chris Buescher | 01:23.8 | -3.552 | 99.700 | Frd | RFR |
| 19 | 19 | Martin Truex Jr. | 01:24.1 | -3.855 | 99.341 | Tyt | JGR |
| 20 | 94 | Ty Dillon | 01:24.1 | -3.924 | 99.260 | Chv | GMS |
| 21 | 23 | Bubba Wallace | 01:24.2 | -3.948 | 99.231 | Tyt | 23XI |
Day 2
| Pos. | No. | Driver(s) | Best time | Diff. | Best speed | Make | Team | Laps run |
| 1 | 19 | Denny Hamlin/ Martin Truex Jr. | 01:18.6 | — | 106.296 | Tyt | JGR | 72 |
| 2 | 8 | Tyler Reddick | 01:21.7 | -3.169 | 102.175 | Chv | RCR | 132 |
| 3 | 4 | Kevin Harvick | 01:22.0 | -3.423 | 101.859 | Frd | SHR (black) | 95 |
| 4 | 21 | Austin Cindric | 01:22.1 | -3.498 | 101.766 | Frd | Wood Brothers | 83 |
| 5 | 14 | Aric Almirola | 01:22.2 | -3.579 | 101.665 | Frd | SHR (blue) | 81 |
| 6 | 12 | Ryan Blaney | 01:22.2 | -3.592 | 101.649 | Frd | Penske | 97 |
| 7 | 51 | Joey Hand | 01:22.5 | -3.898 | 101.272 | Frd | Petty Ware | 105 |
| 8 | 22 | Joey Logano | 01:22.6 | -4.037 | 101.102 | Frd | Penske | 110 |
| 9 | 99 | Daniel Suarez | 01:22.6 | -4.051 | 101.084 | Chv | Trackhouse | 38 |
| 10 | 7 | Corey LaJoie | 01:22.6 | -4.076 | 101.054 | Chv | Spire Motorsports | 54 |
| 11 | 42 | Ross Chastain | 01:22.8 | -4.200 | 100.902 | Chv | CGR | 79 |
| 12 | 27 | Jacques Villeneuve/Loris Hezemans | 01:22.8 | -4.238 | 100.856 | Frd | Team Hezeberg | 78 |
| 13 | 47 | Ricky Stenhouse Jr. | 01:22.8 | -4.251 | 100.840 | Chv | JTG Daugherty Racing | 89 |
| 14 | 48 | Alex Bowman | 01:22.9 | -4.317 | 100.760 | Chv | HMS | 84 |
| 15 | 5 | William Byron | 01:22.9 | -4.367 | 100.699 | Chv | HMS | 69 |
| 16 | 16 | Justin Haley | 01:23.2 | -4.609 | 100.406 | Chv | Kaulig Racing | 23 |
| 17 | 0 | Kaz Grala | 01:23.3 | -4.719 | 100.274 | Chv | StarCom | 43 |
| 18 | 23 | Bubba Wallace/Denny Hamlin | 01:23.4 | -4.798 | 100.179 | Tyt | 23XI | 47 |
| 19 | 43 | Erik Jones | 01:23.5 | -4.886 | 100.073 | Chv | RPM | 53 |
| 20 | 17 | Chris Buescher | 01:23.6 | -5.026 | 99.906 | Frd | RFR | 77 |
| 21 | 94 | Ty Dillon | 01:24.0 | -5.438 | 99.416 | Chv | GMS | 50 |