IndyCar Driver Power Rankings after 2018 IndyCar Grand Prix of Sonoma
By Asher Fair
#15 through #11
#15. . No. 21. Ed Carpenter Racing, Chevrolet. SPENCER PIGOT
| Last Rank | 12th (-3) |
| Races | 17 |
| Top 10 finishes | 5 |
| Top 5 finishes | 2 |
| Podium finishes | 1 |
| Wins | 0 |
| Average finish | 13.59 |
| Average finish in last five races | 12.60 |
| Most recent finish | 24th |
| Points in most recent race | 12 |
| Standings position | 14th |
| Points | 325 |
Rahal Letterman Lanigan Racing, Honda. TAKUMA SATO. #14. . No. 30
| Last Rank | 11th (-3) |
| Races | 17 |
| Top 10 finishes | 8 |
| Top 5 finishes | 4 |
| Podium finishes | 2 |
| Wins | 1 |
| Average finish | 13.24 |
| Average finish in last five races | 14.60 |
| Most recent finish | 25th |
| Points in most recent race | 10 |
| Standings position | 12th |
| Points | 351 |
ED JONES. #13. . No. 10. Chip Ganassi Racing, Honda
| Last Rank | 16th (+3) |
| Races | 17 |
| Top 10 finishes | 8 |
| Top 5 finishes | 2 |
| Podium finishes | 2 |
| Wins | 0 |
| Average finish | 13.24 |
| Average finish in last five races | 13.80 |
| Most recent finish | 10th |
| Points in most recent race | 40 |
| Standings position | 13th |
| Points | 343 |
No. 26. Andretti Autosport, Honda. ZACH VEACH. #12.
| Last Rank | 14th (+2) |
| Races | 17 |
| Top 10 finishes | 5 |
| Top 5 finishes | 2 |
| Podium finishes | 0 |
| Wins | 0 |
| Average finish | 14.06 |
| Average finish in last five races | 10.80 |
| Most recent finish | 14th |
| Points in most recent race | 32 |
| Standings position | 15th |
| Points | 313 |
. No. 15. Rahal Letterman Lanigan Racing, Honda. GRAHAM RAHAL. #11
| Last Rank | 10th (-1) |
| Races | 17 |
| Top 10 finishes | 12 |
| Top 5 finishes | 3 |
| Podium finishes | 1 |
| Wins | 0 |
| Average finish | 11.12 |
| Average finish in last five races | 15.80 |
| Most recent finish | 23rd |
| Points in most recent race | 14 |
| Standings position | 8th |
| Points | 392 |