2005 · Full-Size Pickup · Natural gas

2005 GMC Sierra CNG MPG & fuel economy

The 2005 GMC Sierra CNG is a full-size pickup offered in 2 EPA-rated configurations. The most efficient version returns 9 MPGe combined (8 city / 11 highway) on natural gas (CNG). Among 18 full-size pickups rated for 2005, it ranks 17th for lowest fuel cost. At 15,000 miles a year with $2.90/gge natural gas, it costs about $4,833 a year to fuel.

Compare
Efficiency 9 MPGe 8 MPGe city · 11 MPGe hwy
Driving range — not published for this model
Your fuel cost $4,833 15,000 mi/yr · $32.22 per 100 mi
Class rank, 2005 #17 of 18 Full-Size Pickups by fuel cost

What will it cost you?

Your mileage and prices are saved and used across the site.

Fuel average

The 2005 GMC Sierra CNG is rated 9 MPGe combined.

How it ranks among 2005 Full-Size Pickups

Full class ranking →
  1. 1Ford Ranger23 MPG $2,022
  2. 2Mazda B Pickup23 MPG $2,022
  3. 3Toyota Tacoma21 MPG $2,214
  4. 4Nissan Frontier21 MPG $2,214
  5. 5Chevrolet Colorado21 MPG $2,214
  6. 17GMC Sierra CNG9 MPGe $4,833
  7. 18Chevrolet Silverado CNG9 MPGe $4,833
2005 Sierra CNGOther full-size pickupsClass median: $2,735/yr

Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.

2 EPA-rated configurations

ConfigurationTypeCityHwyCombinedRangeYour cost / yr
RWD · 6.0L 8-cyl · 4-speed automatic
Sierra 2500 HD 2WD CNG		 Natural gas 8 MPGe 11 MPGe 9 MPGe — $4,833
4WD/AWD · 6.0L 8-cyl · 4-speed automatic
Sierra 2500 HD 4WD CNG		 Natural gas 8 MPGe 11 MPGe 9 MPGe — $4,833

Specs (most efficient configuration)

Fuel
Natural gas (CNG)
Engine / motor
6.0L 8-cyl
Transmission
4-speed automatic
Drivetrain
RWD
Tailpipe CO₂
781 g/mi

2005 GMC Sierra CNG vs. rivals

vs Chevrolet Silverado CNG 9 MPGe · $4,833/yr Same fuel cost vs Chevrolet SSR Pickup 15 MPG · $3,950/yr SSR Pickup saves $883/yr vs Nissan Titan 14 MPG · $3,321/yr Titan saves $1,512/yr vs GMC Sierra 17 MPG · $2,735/yr Sierra saves $2,098/yr vs GMC Sierra Hybrid 17 MPG · $2,735/yr Sierra Hybrid saves $2,098/yr vs Ford F150 15 MPG · $3,100/yr F150 saves $1,733/yr vs Dodge Ram 1500 Pickup 16 MPG · $2,906/yr Ram 1500 Pickup saves $1,927/yr vs Dodge Dakota Pickup 17 MPG · $2,735/yr Dakota Pickup saves $2,098/yr

Compare the 2005 Sierra CNG

With any other car from any year, including other Sierra CNG model years. Type a year to jump, e.g. "2015 Accord".

Same year, other powertrains: 2005 GMC Sierra (17 MPG), 2005 GMC Sierra Hybrid (17 MPG)

Frequently asked questions

What is the gas mileage of the 2005 GMC Sierra CNG?

Up to 9 MPGe combined (8 city / 11 highway).

What fuel does the 2005 GMC Sierra CNG use?

Natural gas (CNG).

How much does it cost to fuel the 2005 GMC Sierra CNG per year?

About $4,833 at 15,000 miles a year with $2.90/gge natural gas, or $32.22 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.

Keep exploring