Alex Bowman topped the final practice session for the NASCAR Cup Series Auto Club 400 at Auto Club Speedway.
Click to view practice speeds at NASCAR.com
Click to view speeds and best 10 consecutive averages (pdf)
| Pos | Car | Driver | Make | Time | Speed | Lap # | # Laps | -Fastest | -Next |
| 1 | 88 | Alex Bowman | Chevrolet | 40.764 | 176.626 | 23 | 32 | —.— | —.— |
| 2 | 12 | Ryan Blaney | Ford | 40.866 | 176.186 | 2 | 41 | -0.102 | -0.102 |
| 3 | 43 | Bubba Wallace | Chevrolet | 40.868 | 176.177 | 22 | 22 | -0.104 | -0.002 |
| 4 | 1 | Kurt Busch | Chevrolet | 40.952 | 175.816 | 26 | 47 | -0.188 | -0.084 |
| 5 | 95 | Christopher Bell # | Toyota | 40.980 | 175.695 | 1 | 30 | -0.216 | -0.028 |
| 6 | 14 | Clint Bowyer | Ford | 40.984 | 175.678 | 1 | 25 | -0.220 | -0.004 |
| 7 | 2 | Brad Keselowski | Ford | 41.005 | 175.588 | 2 | 44 | -0.241 | -0.021 |
| 8 | 42 | Kyle Larson | Chevrolet | 41.043 | 175.426 | 22 | 39 | -0.279 | -0.038 |
| 9 | 21 | Matt DiBenedetto | Ford | 41.050 | 175.396 | 1 | 37 | -0.286 | -0.007 |
| 10 | 18 | Kyle Busch | Toyota | 41.066 | 175.328 | 21 | 37 | -0.302 | -0.016 |
| 11 | 6 | Ross Chastain | Ford | 41.067 | 175.323 | 20 | 32 | -0.303 | -0.001 |
| 12 | 17 | Chris Buescher | Ford | 41.071 | 175.306 | 17 | 29 | -0.307 | -0.004 |
| 13 | 10 | Aric Almirola | Ford | 41.072 | 175.302 | 13 | 30 | -0.308 | -0.001 |
| 14 | 8 | Tyler Reddick # | Chevrolet | 41.102 | 175.174 | 1 | 34 | -0.338 | -0.030 |
| 15 | 24 | William Byron | Chevrolet | 41.110 | 175.140 | 20 | 26 | -0.346 | -0.008 |
| 16 | 22 | Joey Logano | Ford | 41.112 | 175.131 | 21 | 37 | -0.348 | -0.002 |
| 17 | 9 | Chase Elliott | Chevrolet | 41.124 | 175.080 | 2 | 28 | -0.360 | -0.012 |
| 18 | 4 | Kevin Harvick | Ford | 41.181 | 174.838 | 2 | 35 | -0.417 | -0.057 |
| 19 | 19 | Martin Truex Jr | Toyota | 41.196 | 174.774 | 27 | 39 | -0.432 | -0.015 |
| 20 | 41 | Cole Custer # | Ford | 41.230 | 174.630 | 27 | 40 | -0.466 | -0.034 |
| 21 | 48 | Jimmie Johnson | Chevrolet | 41.249 | 174.550 | 18 | 33 | -0.485 | -0.019 |
| 22 | 20 | Erik Jones | Toyota | 41.252 | 174.537 | 23 | 35 | -0.488 | -0.003 |
| 23 | 47 | Ricky Stenhouse Jr | Chevrolet | 41.281 | 174.414 | 1 | 23 | -0.517 | -0.029 |
| 24 | 34 | Michael McDowell | Ford | 41.281 | 174.414 | 18 | 26 | -0.517 | 0.000 |
| 25 | 37 | Ryan Preece | Chevrolet | 41.347 | 174.136 | 1 | 29 | -0.583 | -0.066 |
| 26 | 11 | Denny Hamlin | Toyota | 41.376 | 174.014 | 2 | 39 | -0.612 | -0.029 |
| 27 | 3 | Austin Dillon | Chevrolet | 41.402 | 173.905 | 26 | 40 | -0.638 | -0.026 |
| 28 | 13 | Ty Dillon | Chevrolet | 41.424 | 173.812 | 17 | 32 | -0.660 | -0.022 |
| 29 | 32 | Corey LaJoie | Ford | 41.647 | 172.882 | 15 | 25 | -0.883 | -0.223 |
| 30 | 38 | John Hunter | Ford | 41.661 | 172.824 | 1 | 28 | -0.897 | -0.014 |
| 31 | 96 | Daniel Suarez | Toyota | 42.142 | 170.851 | 16 | 26 | -1.378 | -0.481 |
| 32 | 52 | JJ Yeley | Ford | 42.579 | 169.097 | 1 | 12 | -1.815 | -0.437 |
| 33 | 00 | Quin Houff # | Chevrolet | 43.255 | 166.455 | 9 | 16 | -2.491 | -0.676 |
Click to view best lap averages at NASCAR.com
Best 10 Consecutive Lap Averages
| Pos | Car | Driver | From Lap | To Lap | Avg Speed |
| 1 | 88 | Alex Bowman | 21 | 30 | 175.317 |
| 2 | 22 | Joey Logano | 21 | 30 | 174.159 |
| 3 | 19 | Martin Truex Jr | 24 | 33 | 173.944 |
| 4 | 12 | Ryan Blaney | 23 | 32 | 173.939 |
| 5 | 1 | Kurt Busch | 25 | 34 | 173.909 |
| 6 | 24 | William Byron | 17 | 26 | 173.853 |
| 7 | 42 | Kyle Larson | 22 | 31 | 173.829 |
| 8 | 8 | Tyler Reddick # | 25 | 34 | 173.803 |
| 9 | 10 | Aric Almirola | 11 | 20 | 173.739 |
| 10 | 4 | Kevin Harvick | 1 | 10 | 173.701 |
| 11 | 17 | Chris Buescher | 16 | 25 | 173.670 |
| 12 | 21 | Matt DiBenedetto | 1 | 10 | 173.601 |
| 13 | 18 | Kyle Busch | 19 | 28 | 173.576 |
| 14 | 2 | Brad Keselowski | 1 | 10 | 173.520 |
| 15 | 20 | Erik Jones | 22 | 31 | 173.119 |
| 16 | 3 | Austin Dillon | 25 | 34 | 173.112 |
| 17 | 48 | Jimmie Johnson | 16 | 25 | 172.838 |
| 18 | 9 | Chase Elliott | 1 | 10 | 172.806 |
| 19 | 41 | Cole Custer # | 1 | 10 | 172.734 |
| 20 | 11 | Denny Hamlin | 24 | 33 | 172.453 |
| 21 | 47 | Ricky Stenhouse Jr | 1 | 10 | 172.419 |
| 22 | 95 | Christopher Bell # | 16 | 25 | 172.208 |
| 23 | 34 | Michael McDowell | 17 | 26 | 172.177 |
| 24 | 37 | Ryan Preece | 18 | 27 | 171.534 |
| 25 | 38 | John Hunter Nemechek # | 17 | 26 | 171.520 |
| 26 | 6 | Ross Chastain | 1 | 10 | 171.489 |
| 27 | 13 | Ty Dillon | 17 | 26 | 171.035 |
| 28 | 32 | Corey LaJoie | 15 | 24 | 170.680 |
| 29 | 43 | Bubba Wallace | 11 | 20 | 169.817 |
| 30 | 00 | Quin Houff # | 7 | 16 | 163.675 |
