Chevrolet Silverado 2500 HD CNG MPG by year — every rating on record
The Chevrolet Silverado 2500 HD CNG has a combined EPA fuel economy rating for 2 model years, from 2004 to 2005. Across those years its best rated version returned 10 mpg (2004) and its thirstiest returned 9 mpg (2005). The EPA record holds 3 configurations for this nameplate, most recently a Standard Pickup Trucks 2WD / Standard Pickup Trucks 4WD.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2004 | 1 | 10 mpg | 10 mpg | #24 of 24 (0th pct) | Rear-Wheel Drive | CNG | Standard Pickup Trucks 2WD |
| 2005 | 2 | 9 mpg | 9 mpg | #22 of 23 (5th pct) | Rear-Wheel Drive, 4-Wheel or All-Wheel Drive | CNG | Standard Pickup Trucks 2WD, Standard Pickup Trucks 4WD |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The Chevrolet Silverado 2500 HD CNG placed highest in 2005 at #22 of 23, and lowest in 2004 at #24 of 24. It spent 0 of its 2 ranked years in the top half of its class.
Every configuration on record
All 3 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2005 | 6.0L 8-cyl Rear-Wheel Drive Automatic 4-spd CNG | 6.0L 8-cyl, CNG | 8 | 11 | 9 | 1277.8 | 0.2 | $4,950 | 781.1111111111111 | n/a |
| 2005 | 6.0L 8-cyl 4-Wheel or All-Wheel Drive Automatic 4-spd CNG | 6.0L 8-cyl, CNG | 8 | 11 | 9 | 1277.8 | 0.2 | $4,950 | 781.1111111111111 | n/a |
| 2004 | 6.0L 8-cyl Rear-Wheel Drive Automatic 4-spd CNG | 6.0L 8-cyl, CNG | 9 | 11 | 10 | 1150.0 | 0.1 | $4,450 | 703 | n/a |
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 |
|---|---|---|---|
| 2004 → 2005 | 10 → 9 mpg | -1 mpg | 1278 gal |
What Silverado 2500 HD CNG fuel costs over a year
At the EPA's 11,500 miles a year, the 2005 Chevrolet Silverado 2500 HD CNG burns 1278 to 1278 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 | $3,833 | $3,833 | $0 |
| $3.50/gal | $4,472 | $4,472 | $0 |
| $4.00/gal | $5,111 | $5,111 | $0 |
EPA’s own estimate for the 2005 model year is $4,950 to $4,950 a year in fuel, or $13,500 more than the average new vehicle over five years.
How it compares with other Standard Pickup Trucks 2WD
Across the 57 nameplates EPA classifies as Standard Pickup Trucks 2WD, the median best combined rating is 20 mpg. At 9 mpg the Chevrolet Silverado 2500 HD CNG is 11 mpg below the median, which is worth about $2,460 a year at $3.50 a gallon.
- All Standard Pickup Trucks 2WD 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.