IndyCar Driver Power Rankings after 2018 IndyCar Grand Prix of Sonoma
By Asher Fair
#10 through #6
No. 5. Schmidt Peterson Motorsports, Honda. JAMES HINCHCLIFFE. #10.
| Last Rank | 9th (-1) |
| Races | 16 |
| Top 10 finishes | 9 |
| Top 5 finishes | 5 |
| Podium finishes | 2 |
| Wins | 1 |
| Average finish | 10.06 |
| Average finish in last five races | 17.20 |
| Most recent finish | 15th |
| Points in most recent race | 30 |
| Standings position | 10th |
| Points | 391 |
No. 98. Andretti Herta Autosport, Honda. MARCO ANDRETTI. #9.
| Last Rank | 13th (+4) |
| Races | 17 |
| Top 10 finishes | 8 |
| Top 5 finishes | 2 |
| Podium finishes | 0 |
| Wins | 0 |
| Average finish | 11.06 |
| Average finish in last five races | 12.40 |
| Most recent finish | 5th |
| Points in most recent race | 60 |
| Standings position | 8th |
| Points | 392 |
Dale Coyne Racing, Honda. SEBASTIEN BOURDAIS. #8. . No. 18
| Last Rank | 8th (-) |
| Races | 17 |
| Top 10 finishes | 8 |
| Top 5 finishes | 5 |
| Podium finishes | 2 |
| Wins | 1 |
| Average finish | 11.12 |
| Average finish in last five races | 8.00 |
| Most recent finish | 6th |
| Points in most recent race | 56 |
| Standings position | 7th |
| Points | 425 |
#7. . No. 6. Schmidt Peterson Motorsports, Honda. ROBERT WICKENS
| Last Rank | 5th (-2) |
| Races | 14 |
| Top 10 finishes | 10 |
| Top 5 finishes | 7 |
| Podium finishes | 4 |
| Wins | 0 |
| Average finish | 8.93 |
| Average finish in last five races | 6.80 |
| Most recent finish | N/A |
| Points in most recent race | 0 |
| Standings position | 10th |
| Points | 391 |
Andretti Autosport, Honda. RYAN HUNTER-REAY. #6. . No. 28
| Last Rank | 7th (+1) |
| Races | 17 |
| Top 10 finishes | 11 |
| Top 5 finishes | 10 |
| Podium finishes | 6 |
| Wins | 2 |
| Average finish | 8.71 |
| Average finish in last five races | 9.60 |
| Most recent finish | 1st |
| Points in most recent race | 104 |
| Standings position | 4th |
| Points | 566 |