2019 head-to-head · Compact Car
2019 Chevrolet Sonic vs STI S209
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
AWD · 2.5L 4-cyl turbo · 6-speed manual · 17 MPG
The 2019 Chevrolet Sonic is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas and $3.95/gal premium gas, it costs about $1,500 a year to fuel (31 MPG), versus $3,485 for the 2019 STI S209 (17 MPG). That's roughly $1,985 a year, or about $9,926 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Chevrolet Sonic
- STI S209
Side by side
| Chevrolet Sonic | STI S209 | |
|---|---|---|
| $1,500 | Your annual fuel cost | $3,485 |
| 31 MPG | Combined efficiency | 17 MPG |
| 27 MPG | City | 15 MPG |
| 38 MPG | Highway | 21 MPG |
| 91 cu ft | Passenger volume | 97 cu ft |
| 12 cu ft | Cargo volume | 12 cu ft |
| 285 g/mi | Tailpipe CO₂ (g/mi) | 518 g/mi |
| 7/10 | EPA fuel economy score | 3/10 |
| 7/10 | EPA greenhouse gas score | 3/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Premium gasoline |
| 1.4L 4-cyl turbo | Engine / motor | 2.5L 4-cyl turbo |
| 6-speed manual | Transmission | 6-speed manual |
| FWD | Drivetrain | AWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Chevrolet Sonic vs STI S209 across model years
- Chevrolet Sonic
- STI S209
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the STI S209 has more passenger space (97 vs. 91 cu ft).
Among 43 2019 compact cars, the Chevrolet Sonic ranks 16th and the STI S209 42nd for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2019 Chevrolet Sonic or the 2019 STI S209?
Measured by cost to drive, the Chevrolet Sonic. The Chevrolet Sonic is rated 31 MPG combined and the STI S209 17 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2019 Chevrolet Sonic vs. the STI S209 per year?
At 15,000 miles a year with $3.10/gal regular gas and $3.95/gal premium gas, about $1,500 for the Chevrolet Sonic and $3,485 for the STI S209.
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