Against 254 other Hybrid cars rated 2025–2027, the 430i beats their 28 mpg average by 3 mpg, about $132 a year. Averaged over the years each was sold, the most economical engine since 2017, the 2L 4-cyl Hybrid (2025–2027), does 31 mpg and the thirstiest, the 2L 4-cyl (2017–2024), 27.6: $152 a year apart.
Every BMW 430i engine, compared
Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 2L 4-cyl Hybrid | 28 / 36 | 2025–2027 | $1,239 | |
| 2L 4-cyl | 24.4 / 34 | 2017–2024 | $1,391 |
What that actually costs
Against its rivals in the same model years, the Honda Civic gets 42.5 mpg, the Honda Prelude 44 mpg and the Audi S3 26 mpg, next to 31 mpg for the 2027 430i.
| Measure | Value |
|---|---|
| Cost per mile (2027) | $0.103 |
| Fuel per year | $1,239 |
| Fuel over five years | $6,195 |
| Against other Hybrid cars, 2025–2027 | −$132 a year |
| EPA's own estimate | $2,709 a year |
City or highway — who is this car for
The 2027 BMW 430i gives up 8 mpg in town: 36 on the highway against 28 in the city, $304 a year if every mile were city driving.
| Measure | Value | Reading |
|---|---|---|
| City (2027) | 28 mpg | $1,371 a year if you only drive in town |
| Highway | 36 mpg | $1,067 a year if you mostly commute |
| Gap | +8 mpg (29%) | Typical for its type |
How the 430i changed over the years
The 430i peaked in 2027 at 31 mpg (28 city, 36 highway) and was at its thirstiest in 2020 at 27 — 4 mpg apart, or $183 a year in fuel between buying one year and the other. The biggest single-year change came in 2025: 28 to 31 mpg.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2027 | 28 / 36 | 1 | $1,239 | |
| 2026 | 28 / 36 | 1 | $1,239 | |
| 2025 | 28 / 36 | 1 | $1,239 | |
| 2024 | 25 / 34 | 1 | $1,371 | |
| 2023 | 25 / 34 | 1 | $1,371 | |
| 2022 | 25 / 34 | 1 | $1,371 | |
| 2021 | 26 / 34 | 1 | $1,324 | |
| 2020 | 23 / 34 | 1 | $1,422 | |
| 2019 | 24 / 34 | 1 | $1,422 | |
| 2018 | 24 / 34 | 1 | $1,422 | |
| 2017 | 23 / 34 | 1 | $1,422 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 11 EPA ratings of the BMW 430i — 2 engines across 2017–2027. 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 $2,709. Full method.
Frequently asked questions
What mpg does the 2027 BMW 430i get?
31 mpg combined, 28 city and 36 highway, per EPA. Across every year since 2017 the 430i has averaged 28.5 mpg.
Is the 2027 430i more efficient than the 2026?
About the same: 31 against 31 mpg combined.
Which 430i year has the best gas mileage?
The 2027, at 31 mpg combined (28 city, 36 highway), which is also the latest model year we hold.
Does the 430i get better gas mileage than the Honda Civic?
No: 31 mpg for the 2027 430i against 42.5 for the 2026 Honda Civic, about $335 a year more to run.
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