STI S209
Transmission, start-stop, premium fuel and flex-fuel by model year, 2019
TransmissionThe 2019 STI S209 uses a 6-speed manual in the configuration EPA tested.
Auto start-stopNo. EPA lists no auto start-stop on any 2019 STI S209 configuration it tested.
Premium fuelEPA tested the 2019 STI S209 on premium fuel; your owner's manual or fuel-door label is the authority.
Flex-fuel (E85)No. EPA does not list any 2019 STI S209 configuration as a flex-fuel vehicle (FFV).
2019 at a glance
1 configuration tested by EPA
EPA lists a manual transmission for the STI S209 in these model years: 2019 (1 year of data from 2019–2019).
STI S209 features by model year
| ’19 | |
|---|---|
| CVT | 2019 CVT: None |
| Manual | 2019 Manual: All |
| Automated manual | 2019 Automated manual: None |
| Automatic | 2019 Automatic: None |
| Start-stop | 2019 Start-stop: None |
| Premium fuel | 2019 Premium fuel: All |
| Flex-fuel | 2019 Flex-fuel: None |
Configurations by year
2019 STI S209
1 configurations
| EPA model name | Engine | Transmission | Drive | Start-stop | EPA test fuel | Flex-fuel |
|---|---|---|---|---|---|---|
| S209 | 2.5L 4-cyl turbo | 6-speed manual6-spd | All-Wheel | No | Premium | No |
Check before you buy or refuel Confirm on the window sticker, owner's manual or with the dealer. Trims and options can differ from the configurations EPA tested.
About premium fuel EPA data shows the fuel a vehicle was tested on. It does not say whether premium is required or only recommended. Your owner's manual or fuel-door label is the authority.
Before using E85 Confirm the vehicle is a flex-fuel vehicle (FFV) in the owner's manual, or look for a yellow gas cap or an "FFV" badge. Not every version of a model is flex-fuel.
Source: U.S. EPA / Department of Energy vehicle data fromFuelEconomy.gov, data as of September 29, 2026.See how we classify vehicles.