The 2018 Trans-Am Series season was the fiftieth running of the Sports Car Club of America's Trans-Am Series. It began on March 2 at Sebring International Raceway and ran for twelve rounds.
| Round | Event | Circuit | Location | Date | Classes |
|---|---|---|---|---|---|
| 1 | | Fontana, California | April 27–29 | All | |
| 2 | | Sonoma, California | June 1–3 | All | |
| 3 | Brickyard Vintage Racing Invitational | | Speedway, Indiana | June 15–17 | All |
| 4 | | Portland, Oregon | July 27–29 | All | |
| 5 | | Elroy, Texas | November 1–3 | All |
TA, TA3, TA4 competed together at all events except Pittsburgh, where TA ran a dedicated race and a separate race was held for TA3 and TA4, and at Daytona, where all classes competed together. TA2 competed in a dedicated race at all events except Daytona. Overall winners in bold.
All classes raced together on track, except in the meetings shared with the National Championship. Bold indicates overall winner.
| Round | Circuit | TA Winning driver | TA2 Winning driver | TA3 Winning driver | TA4 Winning driver |
|---|---|---|---|---|---|
| 1 | Auto Club Speedway | | | | |
| 2 | Sonoma Raceway | | | | None entered |
| 3 | Indianapolis Motor Speedway road course | | | None entered | |
| 4 | Portland International Raceway | | | | None started |
| 5 | Circuit of the Americas | None entered [m] | | None entered | None entered |
| Sources: [27] [28] [29] [30] [31] [32] [33] | |||||
| Team | Car | No. | Drivers | Rounds |
|---|---|---|---|---|
| | Cadillac CTS-V | 19 | | 1 |
| | Dodge Challenger | 9 | | 1 |
| | Ford Mustang | 86 | | 1 |
| | Chevrolet Corvette | 15 | | 1 |
| | Ford Mustang | 98 | | 1 |
| | Chevrolet Camaro | 81 | | 1 |