The BMW 645Ci gas mileage is 18.5 to 20.5 miles per gallon as specified in our data below, organized by trim, option package, and model year.
For example, the 2005 BMW 645Ci trim model has a combined gas mileage of 18.5 miles per gallon, while the 2004 BMW 645Ci has a combined gas mileage of 20.5 miles per gallon.
In the city, the 645Ci gas mileage is 15 to 17 miles per gallon depending on the trim and model year.
On the highway, the 645Ci gas mileage is 22 to 24 miles per gallon depending on the trim and model year.
Note: The gas mileage shown for hybrid vehicles is the miles per gallon equivalent.
Check out the Gas Mileage specifications for other makes and models.
2005 BMW 645Ci Gas Mileage
Depending on trim level, the 2005 BMW 645Ci gas mileage is from 18.5 to 20 miles per gallon combined.
In the city, the 2005 645Ci gas mileage is from 15 to 16 miles per gallon, depending on the trim.
On the highway, the 2005 645Ci gas mileage is from 22 to 24 miles per gallon, depending on the trim.
2005 BMW 645Ci Gas Mileage (Imperial)
| Trim |
Engine | Transmission | Drivetrain |
City | Highway | Combined Mileage |
| Coupe |
4.4L | V8 | 6 Spd Manual w/OD | RWD |
16 city mpg | 24 hwy mpg | 20 combined mpg |
| Convertible |
4.4L | V8 | 6 Spd Manual w/OD | RWD |
15 city mpg | 22 hwy mpg | 18.5 combined mpg |
2005 BMW 645Ci Gas Mileage (Metric)
| Trim |
Engine | Transmission | Drivetrain |
City | Highway | Combined Mileage |
| Coupe |
4.4L | V8 | 6 Spd Manual w/OD | RWD |
15.0 city L/100 km | 10.0 hwy L/100 km | 12.0 combined L/100 km |
| Convertible |
4.4L | V8 | 6 Spd Manual w/OD | RWD |
16.0 city L/100 km | 11.0 hwy L/100 km | 13.0 combined L/100 km |
2004 BMW 645Ci Gas Mileage
The 2004 BMW 645Ci gas mileage is 20.5 miles per gallon combined.
In the city, the 2004 645Ci gas mileage is 17 miles per gallon.
On the highway, the 2004 645Ci gas mileage is 24 miles per gallon.
2004 BMW 645Ci Gas Mileage (Imperial)
| Trim |
Engine | Transmission | Drivetrain |
City | Highway | Combined Mileage |
| Coupe |
4.4L | V8 | 6 Spd Manual w/OD | RWD |
17 city mpg | 24 hwy mpg | 20.5 combined mpg |
| Convertible |
4.4L | V8 | 6 Spd Manual w/OD | RWD |
17 city mpg | 24 hwy mpg | 20.5 combined mpg |
2004 BMW 645Ci Gas Mileage (Metric)
| Trim |
Engine | Transmission | Drivetrain |
City | Highway | Combined Mileage |
| Coupe |
4.4L | V8 | 6 Spd Manual w/OD | RWD |
14.0 city L/100 km | 10.0 hwy L/100 km | 11.0 combined L/100 km |
| Convertible |
4.4L | V8 | 6 Spd Manual w/OD | RWD |
14.0 city L/100 km | 10.0 hwy L/100 km | 11.0 combined L/100 km |
BMW 645Ci Gas Mileage Data Brought To You By AutoPadre
BMW 645Ci Gas Mileage Comparisons By Year