BMW I8 Roadster MPG by year — every rating on record
The BMW I8 Roadster has a combined EPA fuel economy rating for 2 model years, from 2019 to 2020. Across those years its best rated version returned 27 mpg (2019) and its thirstiest returned 27 mpg (2019). The EPA record holds 2 configurations for this nameplate, most recently a Subcompact Cars.
In the EPA record this nameplate also appears as I8 Roadster and I8 Coupe. The figures below cover every one of them.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2019 | 1 | 27 mpg | 27 mpg | #24 of 85 (73th pct) | All-Wheel Drive | Premium and Electricity | Subcompact Cars |
| 2020 | 1 | 27 mpg | 27 mpg | #19 of 87 (79th pct) | All-Wheel Drive | Premium and Electricity | Subcompact Cars |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The BMW I8 Roadster placed highest in 2020 at #19 of 87, and lowest in 2019 at #24 of 85. It spent 2 of its 2 ranked years in the top half of its class.
Every configuration on record
All 2 configurations EPA lists for this nameplate, newest first.
| Year | Configuration | Engine detail | City | Highway | Combined | Gallons/yr | Barrels/yr | EPA fuel cost/yr | Range | CO2 g/mi | GHG |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 1.5L 3-cyl All-Wheel Drive Automatic 6-spd Premium and Electricity | SIDI; PHEV, turbocharged, Plug-in Hybrid, start-stop | 26 | 29 | 27 | 425.9 | 6.4 | $2,850 | 320 mi | 191 | 10/10 |
| 2019 | 1.5L 3-cyl All-Wheel Drive Automatic 6-spd Premium and Electricity | SIDI; PHEV, turbocharged, Plug-in Hybrid, start-stop | 26 | 29 | 27 | 425.9 | 6.4 | $2,850 | 320 mi | 191 | 10/10 |
What I8 Roadster fuel costs over a year
At the EPA's 11,500 miles a year, the 2020 BMW I8 Roadster burns 426 to 426 gallons depending on configuration. Below is what that costs at three pump prices, and how much more the thirstiest configuration costs than the most efficient one.
| Pump price | Most efficient | Thirstiest | Spread |
|---|---|---|---|
| $3.00/gal | $1,278 | $1,278 | $0 |
| $3.50/gal | $1,491 | $1,491 | $0 |
| $4.00/gal | $1,704 | $1,704 | $0 |
EPA’s own estimate for the 2020 model year is $2,850 to $2,850 a year in fuel, or $750 less than the average new vehicle over five years.
How it compares with other Subcompact Cars
Across the 461 nameplates EPA classifies as Subcompact Cars, the median best combined rating is 24 mpg. At 27 mpg the BMW I8 Roadster is 3 mpg better the median, which is worth about $186 a year at $3.50 a gallon.
- All Subcompact Cars rankings — every nameplate in the class, best to worst.
Other BMW nameplates
Every BMW model compared → — all nameplates ranked by best combined rating, with what each one costs a year.