2021 head-to-head · Subcompact Car
2021 BMW 4 Series vs Mercedes-Benz A-Class
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.95/gal premium gas, the most efficient 2021 BMW 4 Series (29 MPG) costs about $2,043 a year to fuel and the 2021 Mercedes-Benz A-Class (29 MPG) about $2,043.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- BMW 4 Series
- Mercedes-Benz A-Class
Side by side
| BMW 4 Series | Mercedes-Benz A-Class | |
|---|---|---|
| $2,043 | Your annual fuel cost | $2,043 |
| 29 MPG | Combined efficiency | 29 MPG |
| 26 MPG | City | 25 MPG |
| 34 MPG | Highway | 36 MPG |
| 86 cu ft | Passenger volume | 91 cu ft |
| 12 cu ft | Cargo volume | 9 cu ft |
| 304 g/mi | Tailpipe CO₂ (g/mi) | 309 g/mi |
| 6/10 | EPA fuel economy score | 6/10 |
| 6/10 | EPA greenhouse gas score | 6/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 8-speed automatic | Transmission | 7-speed dual-clutch |
| RWD | Drivetrain | FWD |
✓ 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.
BMW 4 Series vs Mercedes-Benz A-Class across model years
- BMW 4 Series
- Mercedes-Benz A-Class
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 Mercedes-Benz A-Class has more passenger space (91 vs. 86 cu ft); the BMW 4 Series has more cargo space (12 vs. 9 cu ft).
Among 34 2021 subcompact cars, the BMW 4 Series ranks 10th and the Mercedes-Benz A-Class 12th for lowest fuel cost.
Frequently asked questions
How much does it cost to fuel the 2021 BMW 4 Series vs. the Mercedes-Benz A-Class per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,043 for the BMW 4 Series and $2,043 for the Mercedes-Benz A-Class.
Which has more cargo space?
The BMW 4 Series, with 12 cu ft of luggage volume versus 9 cu ft (EPA interior volume index).
BMW 4 Series vs Mercedes-Benz A-Class in other years
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