Fuel economy details

STI S209 2019

EPA fuel-economy estimates for 1 version of this vehicle. Review the published configuration below.

17combined MPG

15 / 21city / highway MPG

$4,850estimated annual fuel cost

How to use these estimates

EPA ratings use standardized city and highway tests, making them a useful starting point for comparing similar vehicles. For model years with several versions, choose the powertrain that matches the vehicle you are considering before relying on a rating.

Your actual fuel or electricity use can vary with weather, payload, driving style, maintenance, and local prices.

Manual 6-spd

17 combined MPG

Fuel typePremium Gasoline

Vehicle classCompact Cars

DriveAll-Wheel Drive

TransmissionManual 6-spd

Tailpipe CO₂518 g/mi

EPA base modelS209

TurbochargerYes

Efficiency and cost

EPA fuel economy score: 3
EPA greenhouse gas score: 3
Estimated annual petroleum use: 17.5 barrels
Five-year fuel-cost comparison: costs $12,250 more

Interior space

Passenger volume: 97 cu ft
Luggage volume: 12 cu ft

EPA class benchmark

Compared with 88 EPA records from 2019 in this vehicle class and fuel type.

Efficiency position: At or above 8%
Combined MPG vs median: 6.5 MPG below the class median.
Annual cost vs median: $1,375 higher than the class median.

Where these numbers come from

Source: EPA FuelEconomy.gov. This page was last updated on October 3, 2026. Learn more about how we use vehicle data.