BMW 640i xDrive Convertible MPG by year — every rating on record
The BMW 640i xDrive Convertible has a combined EPA fuel economy rating for 5 model years, from 2014 to 2018. Across those years its best rated version returned 23 mpg (2014) and its thirstiest returned 22 mpg (2017). The EPA record holds 5 configurations for this nameplate, most recently a Subcompact Cars.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2014 | 1 | 23 mpg | 23 mpg | #32 of 63 (50th pct) | All-Wheel Drive | Premium | Subcompact Cars |
| 2015 | 1 | 23 mpg | 23 mpg | #39 of 71 (46th pct) | All-Wheel Drive | Premium | Subcompact Cars |
| 2016 | 1 | 23 mpg | 23 mpg | #41 of 71 (43th pct) | All-Wheel Drive | Premium | Subcompact Cars |
| 2017 | 1 | 22 mpg | 22 mpg | #55 of 88 (38th pct) | All-Wheel Drive | Premium | Subcompact Cars |
| 2018 | 1 | 22 mpg | 22 mpg | #53 of 82 (36th pct) | All-Wheel Drive | Premium | 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 640i xDrive Convertible placed highest in 2014 at #32 of 63, and lowest in 2017 at #55 of 88. It spent 1 of its 5 ranked years in the top half of its class.
Every configuration on record
All 5 configurations EPA lists for this nameplate, newest first.
| Year | Configuration | Engine detail | City | Highway | Combined | Gallons/yr | Barrels/yr | EPA fuel cost/yr | CO2 g/mi | GHG |
|---|---|---|---|---|---|---|---|---|---|---|
| 2018 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 19 | 28 | 22 | 522.7 | 13.5 | $3,500 | 396 | 4/10 |
| 2017 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 19 | 28 | 22 | 522.7 | 13.5 | $3,500 | 398 | 5/10 |
| 2016 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 20 | 29 | 23 | 500.0 | 12.9 | $3,350 | 384 | 5/10 |
| 2015 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 20 | 29 | 23 | 500.0 | 12.9 | $3,350 | 385 | 5/10 |
| 2014 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 20 | 29 | 23 | 500.0 | 12.9 | $3,350 | 384 | 6/10 |
How the rating has moved between model years
Comparing the best-rated configuration of each year. 0 of 1 year-over-year steps improved the top rating.
| Change | Best combined | Delta | Gallons a year at the newer rating |
|---|---|---|---|
| 2016 → 2017 | 23 → 22 mpg | -1 mpg | 523 gal |
What 640i xDrive Convertible fuel costs over a year
At the EPA's 11,500 miles a year, the 2018 BMW 640i xDrive Convertible burns 523 to 523 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 | $1,568 | $1,568 | $0 |
| $3.50/gal | $1,830 | $1,830 | $0 |
| $4.00/gal | $2,091 | $2,091 | $0 |
EPA’s own estimate for the 2018 model year is $3,500 to $3,500 a year in fuel, or $6,250 more 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 22 mpg the BMW 640i xDrive Convertible is 2 mpg below the median, which is worth about $152 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.