The Chevrolet Sonic does 31.6 mpg combined (27.7 city, 37.4 highway), which works out to about $1,215 a year in fuel at $3.20 a gallon and 12,000 miles. Against other 4-cyl cars it sits above the average of 25.7 mpg.
Every Chevrolet Sonic engine, compared
The Chevrolet Sonic was rated in a single specification, so its gas mileage does not vary by version — only by model year. Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 1.4L 4-cyl | 27.7 / 37.4 | 2012–2020 | $1,215 |
What that actually costs
The Chevrolet Sonic burns a gallon every 31.6 miles, so 12,000 miles takes about 380 gallons a year. At $3.20 that is what the table below adds up to.
| Measure | Value |
|---|---|
| Cost per mile | $0.101 |
| Fuel per year | $1,215 |
| Fuel over five years | $6,075 |
| Against other 4-cyl cars | −$279 a year |
| EPA's own estimate | $1,978 a year |
City or highway — who is this car for
The Chevrolet Sonic gives up 9.7 mpg the moment you leave the motorway — 37.4 out there against 27.7 in town, a 35% drop worth $359 a year. A wide gap punishes stop-and-start traffic; a narrow one means the car doesn't care where you drive it.
| Measure | Value | Reading |
|---|---|---|
| City | 27.7 mpg | $1,386 a year if you only drive in town |
| Highway | 37.4 mpg | $1,027 a year if you mostly commute |
| Gap | +9.7 mpg (35%) | Wide — this car dislikes traffic |
How the Sonic changed over the years
The Sonic peaked in 2018 at 32 mpg (28 city, 37 highway) and was at its thirstiest in 2020 at 29 — 3 mpg apart, or $124 a year in fuel between buying one year and the other. The 2020 car does 29. Jumps usually mark a new generation or a new engine; dips often mean a heavier body or added all-wheel drive.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2020 | 26 / 34 | 1 | $1,324 | |
| 2019 | 27 / 38 | 1 | $1,239 | |
| 2018 | 28 / 37 | 1 | $1,200 | |
| 2017 | 28 / 38 | 1 | $1,200 | |
| 2016 | 28 / 38 | 1 | $1,200 | |
| 2015 | 28 / 38 | 1 | $1,200 | |
| 2014 | 28 / 38 | 1 | $1,200 | |
| 2013 | 28 / 38 | 1 | $1,200 | |
| 2012 | 28 / 38 | 1 | $1,200 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 9 EPA ratings of the Chevrolet Sonic — 1 engine across 2012–2020. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $1,978. Full method.
Frequently asked questions
What mpg does the Chevrolet Sonic get?
31.6 mpg combined on average — 27.7 in the city and 37.4 on the highway, per EPA ratings across 2012–2020.
How much does a Chevrolet Sonic cost in fuel per year?
About $1,215 at 12,000 miles and $3.20 a gallon — roughly $6,075 over five years, or 0.101 dollars a mile.
Which Sonic engine is the most economical?
The 1.4L 4-cyl at 31.6 mpg.
Is the Sonic good on fuel compared with similar cars?
Against other 4-cyl cars it sits above the average of 25.7 mpg, computed across 4765 ratings.
Are these real-world Sonic figures?
No — they are EPA laboratory ratings, the same ones printed on the window sticker, and EPA's own annual fuel estimate for the Chevrolet Sonic is $1,978 against the $1,215 we compute at 12,000 miles. Expect a little worse in practice: the spread between the city and highway figures is smaller than the spread between two drivers of the same one.
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