2026 BMW 3 Series mpg
Combined mpg, 330i Sedan RWD
31mpg
- 28 city, 35 highway.
- Top 28% of 59 sedans (2026).
- 12 trims: 29 to 31 mpg.
12,000 miles a year. Gas $3.20.
| Trim | Engine | Drive | City mpg | Hwy mpg | Combined | Tank, gal | Miles per tank | Cost a year |
|---|---|---|---|---|---|---|---|---|
| 330i Sedan RWD | 2.0L 4cyl | RWD | 28 | 35 | 31 | 15.6 | 484 | $1,239 |
| 330i NA Sedan RWD | 2.0L 4cyl | RWD | 28 | 35 | 31 | 15.6 | 484 | $1,239 |
| 330i RWD | 2.0L 4cyl | RWD | 28 | 35 | 31 | 15.6 | 484 | $1,239 |
| 330i xDrive Sedan | 2.0L | AWD | 26 | 34 | 29 | 15.6 | 452 | $1,324 |
| 330i NA xDrive Sedan | 2.0L | AWD | 26 | 34 | 29 | 15.6 | 452 | $1,324 |
| 330i xDrive AWD | 2.0L 4cyl | AWD | 26 | 34 | 29 | 15.6 | 452 | $1,324 |
| M340i Sedan RWD | 3.0L 6cyl | RWD | 27 | 33 | 29 | 15.6 | 452 | $1,324 |
| M340i NA Sedan RWD | 3.0L 6cyl | RWD | 27 | 33 | 29 | 15.6 | 452 | $1,324 |
| M340i RWD | 3.0L 6cyl | RWD | 27 | 33 | 29 | 15.6 | 452 | $1,324 |
| M340i xDrive Sedan | 3.0L | AWD | 26 | 33 | 29 | 15.6 | 452 | $1,324 |
| M340i NA xDrive Sedan | 3.0L | AWD | 26 | 33 | 29 | 15.6 | 452 | $1,324 |
| M340i xDrive AWD | 3.0L 6cyl | AWD | 26 | 33 | 29 | 15.6 | 452 | $1,324 |
Fuel cost
330i Sedan RWD, 31 mpg combined.
- Per year
- $1,239
- Per month
- $103
- Per mile
- 10.3 cents
- Fill the tank
- $49.92
- Top trim: M340i NA xDrive Sedan. $1,324 a year. $85 more than the 330i Sedan RWD.
Trip cost
| Trip | Gallons | Cost |
|---|---|---|
| 100 miles | 2.9 | $9.14 |
| 300 miles | 8.6 | $27.43 |
| 500 miles | 14.3 | $45.71 |
| 1,000 miles | 28.6 | $91.43 |
Commute cost
- Per month
- $89
- Per year
- $1,074
- Miles a month
- 867
330i Sedan RWD. 20 miles each way, 5 days a week.
Is 31 mpg good? Yes. Beats 86% of 2026 cars.
MPG by year
Rivals
| Car | Cheapest trim | Combined mpg | Compare |
|---|---|---|---|
| 2026 BMW 3 Series | 330i Sedan RWD | 31 mpg | |
| 2026 Lexus ES EV | ES 350h Premium FWD | 46 mpg | |
| 2026 Lexus ES Hybrid | ES 350e Premium FWD | 46 mpg | Compare |
| 2026 Honda Civic Type R | FWD | 24 mpg | Compare |
| 2026 Cadillac CT5 | Premium Luxury RWD | 26 mpg | Compare |
| 2026 Lexus IS | 350 F Sport Design RWD | 22 mpg | |
| 2026 Mercedes-Benz C-Class | C 300 RWD | 29 mpg |
What this cannot tell you
EPA ratings. Your own mpg will differ.
Gas prices change by state and by week.
- 2 or more sources
- 1 source
- Model-level, rule or estimate
- Sources disagree