The BMW 230i does 28.7 mpg combined (25 city, 34.6 highway), which works out to about $1,338 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 BMW 230i engine, compared
The BMW 230i 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 |
|---|---|---|---|---|
| 2L 4-cyl | 25 / 34.6 | 2017–2026 | $1,338 |
What that actually costs
The BMW 230i burns a gallon every 28.7 miles, so 12,000 miles takes about 418 gallons a year. At $3.20 that is what the table below adds up to.
| Measure | Value |
|---|---|
| Cost per mile | $0.111 |
| Fuel per year | $1,338 |
| Fuel over five years | $6,690 |
| Against other 4-cyl cars | −$156 a year |
| EPA's own estimate | $2,680 a year |
City or highway — who is this car for
The BMW 230i gives up 9.6 mpg the moment you leave the motorway — 34.6 out there against 25 in town, a 38% drop worth $426 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 | 25 mpg | $1,536 a year if you only drive in town |
| Highway | 34.6 mpg | $1,110 a year if you mostly commute |
| Gap | +9.6 mpg (38%) | Wide — this car dislikes traffic |
How the 230i changed over the years
The 230i peaked in 2026 at 30 mpg (26 city, 35 highway) and was at its thirstiest in 2020 at 27 — 3 mpg apart, or $142 a year in fuel between buying one year and the other. The 2026 car does 30. 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 |
|---|---|---|---|---|
| 2026 | 26 / 35 | 1 | $1,280 | |
| 2025 | 26 / 35 | 1 | $1,280 | |
| 2024 | 26 / 35 | 1 | $1,280 | |
| 2023 | 26 / 35 | 1 | $1,324 | |
| 2022 | 26 / 35 | 1 | $1,324 | |
| 2021 | 25 / 32 | 1 | $1,371 | |
| 2020 | 23 / 34 | 1 | $1,422 | |
| 2019 | 24 / 35 | 1 | $1,371 | |
| 2018 | 24 / 35 | 1 | $1,371 | |
| 2017 | 24 / 35 | 1 | $1,371 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 10 EPA ratings of the BMW 230i — 1 engine across 2017–2026. 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 $2,680. Full method.
Frequently asked questions
What mpg does the BMW 230i get?
28.7 mpg combined on average — 25 in the city and 34.6 on the highway, per EPA ratings across 2017–2026.
How much does a BMW 230i cost in fuel per year?
About $1,338 at 12,000 miles and $3.20 a gallon — roughly $6,690 over five years, or 0.111 dollars a mile.
Which 230i engine is the most economical?
The 2L 4-cyl at 28.7 mpg.
Is the 230i 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 230i figures?
No — they are EPA laboratory ratings, the same ones printed on the window sticker, and EPA's own annual fuel estimate for the BMW 230i is $2,680 against the $1,338 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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