2021 · Compact Car · Plug-in hybrid
2021 BMW 3 Series Plug-in Hybrid MPG & fuel economy
The 2021 BMW 3 Series Plug-in Hybrid is a compact car offered in 2 EPA-rated configurations. This plug-in hybrid covers about 23 miles on electricity (75 MPGe), then returns 28 MPG on gas. Across the lineup, combined ratings range from 25 to 28 MPG. Among 37 compact cars rated for 2021, it ranks 18th for lowest fuel cost. At 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, it costs about $1,666 a year to fuel.
What will it cost you?
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Fuel average
The 2021 BMW 3 Series Plug-in Hybrid's fuel average is 11.9 km/L (8.4 L/100 km), or 28 MPG combined: 10.6 km/L in the city and 14.0 km/L on the highway. On electricity it is rated 75 MPGe.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City (gas) | 25 | 10.6 | 9.4 |
| Highway (gas) | 33 | 14.0 | 7.1 |
| Combined (gas) | 28 | 11.9 | 8.4 |
How it ranks among 2021 Compact Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
3 Series Plug-in Hybrid MPG across model years
Full history →2 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 2.0L 4-cyl turbo · 8-speed automatic 330e |
Plug-in hybrid | 72 MPGe + 25 MPG | 80 MPGe + 33 MPG | 75 MPGe + 28 MPG | 320 mi | $1,666 |
| AWD · 2.0L 4-cyl turbo · 8-speed automatic 330e xDrive |
Plug-in hybrid | 64 MPGe + 22 MPG | 71 MPGe + 30 MPG | 67 MPGe + 25 MPG | 290 mi | $1,912 |
Specs (most efficient configuration)
- Fuel
- Premium gas + electricity
- Engine / motor
- 2.0L 4-cyl turbo
- Transmission
- 8-speed automatic
- Drivetrain
- RWD
- Electricity use
- 45 kWh/100 mi
- All-electric range
- 23 mi
- Charge time (240V)
- 3 hrs
- Passenger volume
- 94 cu ft
- Cargo volume
- 9 cu ft
- Tailpipe CO₂
- 160 g/mi
- EPA fuel economy score
- 8/10
- EPA greenhouse gas score
- 10/10
2021 BMW 3 Series Plug-in Hybrid vs. rivals
Compare the 2021 3 Series Plug-in Hybrid
With any other car from any year, including other 3 Series Plug-in Hybrid model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 2021 BMW 3 Series (30 MPG)
Frequently asked questions
What is the gas mileage of the 2021 BMW 3 Series Plug-in Hybrid?
Up to 75 MPGe + 28 MPG combined; ratings range from 25 to 28 MPG depending on configuration.
What fuel does the 2021 BMW 3 Series Plug-in Hybrid use?
Premium gas + electricity (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 2021 BMW 3 Series Plug-in Hybrid?
The 2021 BMW 3 Series Plug-in Hybrid's fuel average is 11.9 km/L (8.4 L/100 km), or 28 MPG combined: 10.6 km/L in the city and 14.0 km/L on the highway. On electricity it is rated 75 MPGe.
How much does it cost to fuel the 2021 BMW 3 Series Plug-in Hybrid per year?
About $1,666 at 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, or $11.10 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.