Chevrolet Impala Bi-Fuel (CNG) MPG by year — every rating on record
The Chevrolet Impala Bi-Fuel (CNG) has a combined EPA fuel economy rating for 2 model years, from 2015 to 2016. Across those years its best rated version returned 20 mpg (2015) and its thirstiest returned 20 mpg (2015). The EPA record holds 2 configurations for this nameplate, most recently a Midsize Cars.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2015 | 1 | 20 mpg | 20 mpg | #84 of 101 (17th pct) | Front-Wheel Drive | Gasoline or natural gas | Midsize Cars |
| 2016 | 1 | 20 mpg | 20 mpg | #94 of 112 (16th pct) | Front-Wheel Drive | Gasoline or natural gas | Midsize Cars |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The Chevrolet Impala Bi-Fuel (CNG) placed highest in 2015 at #84 of 101, and lowest in 2016 at #94 of 112. It spent 0 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 | CO2 g/mi | GHG |
|---|---|---|---|---|---|---|---|---|---|---|
| 2016 | 3.6L 6-cyl Front-Wheel Drive Automatic (S6) Gasoline or natural gas | 3.6L 6-cyl, Bifuel (CNG) | 17 | 25 | 20 | 575.0 | 14.9 | $3,100 | 437 | 4/10 |
| 2015 | 3.6L 6-cyl Front-Wheel Drive Automatic (S6) Gasoline or natural gas | 3.6L 6-cyl, Bifuel (CNG) | 17 | 25 | 20 | 575.0 | 14.9 | $3,100 | 437 | 5/10 |
What Impala Bi-Fuel (CNG) fuel costs over a year
At the EPA's 11,500 miles a year, the 2016 Chevrolet Impala Bi-Fuel (CNG) burns 575 to 575 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 | $1,725 | $1,725 | $0 |
| $3.50/gal | $2,013 | $2,013 | $0 |
| $4.00/gal | $2,300 | $2,300 | $0 |
EPA’s own estimate for the 2016 model year is $3,100 to $3,100 a year in fuel, or $4,250 more than the average new vehicle over five years.
How it compares with other Midsize Cars
Across the 483 nameplates EPA classifies as Midsize Cars, the median best combined rating is 25 mpg. At 20 mpg the Chevrolet Impala Bi-Fuel (CNG) is 5 mpg below the median, which is worth about $403 a year at $3.50 a gallon.
- All Midsize Cars rankings — every nameplate in the class, best to worst.
Other Chevrolet nameplates
Every Chevrolet model compared → — all nameplates ranked by best combined rating, with what each one costs a year.