MPG

1999 GMC Sierra 2500 gas mileage or MPG ranges from 14 mpg to 14 mpg. Available 1999 GMC Sierra 2500 fuel types include Diesel, Gasoline

Trim Style City MPG Highway MPG Combined MPG Fuel Type
SL Reg Cab 133.0" WB SL Gasoline (Gasoline Fuel)
SL 2WD Regular Cab Long Box SL 12 16 14 Gasoline (Gasoline Fuel)
Reg Cab 131.5" WB Gasoline (Gasoline Fuel)
2WD Crew Cab Short Box Gasoline (Gasoline Fuel)
HD 2WD Regular Cab Long Box C6P Gasoline (Gasoline Fuel)
4WD Crew Cab Short Box Gasoline (Gasoline Fuel)
SLE 2WD Regular Cab Long Box SLE 12 16 14 Gasoline (Gasoline Fuel)
SLE Reg Cab 133.0" WB SLE Gasoline (Gasoline Fuel)
Reg Cab 131.5" WB 4WD Gasoline (Gasoline Fuel)
HD 2WD Extended Cab Long Box C6P Gasoline (Gasoline Fuel)
HD 4WD Regular Cab Long Box C6P Gasoline (Gasoline Fuel)
SL Reg Cab 133.0" WB 4WD SL Gasoline (Gasoline Fuel)
SL 2WD Extended Cab Standard Box SL 12 16 14 Gasoline (Gasoline Fuel)
HD 4WD Extended Cab Short Box C6P Gasoline (Gasoline Fuel)
SLE 2WD Extended Cab Standard Box SLE 12 16 14 Gasoline (Gasoline Fuel)
SLE Reg Cab 133.0" WB 4WD SLE Gasoline (Gasoline Fuel)
SL HD 2WD Regular Cab Long Box C6P SL Gasoline (Gasoline Fuel)
HD 4WD Extended Cab Short Box C6P (CMI) Diesel (Diesel Fuel)
HD 4WD Extended Cab Long Box C6P Gasoline (Gasoline Fuel)
SLE HD 2WD Regular Cab Long Box C6P SLE Gasoline (Gasoline Fuel)
SL HD 2WD Extended Cab Long Box C6P SL Gasoline (Gasoline Fuel)
SLE HD 2WD Extended Cab Long Box C6P SLE Gasoline (Gasoline Fuel)
SL HD 4WD Regular Cab Long Box C6P SL Gasoline (Gasoline Fuel)
SLE HD 4WD Regular Cab Long Box C6P SLE Gasoline (Gasoline Fuel)
SL HD 4WD Extended Cab Standard Box C6P SL Gasoline (Gasoline Fuel)
SLE HD 4WD Extended Cab Standard Box C6P SLE Gasoline (Gasoline Fuel)
SL HD 4WD Extended Cab Long Box C6P SL Gasoline (Gasoline Fuel)
SLE HD 4WD Extended Cab Long Box C6P SLE Gasoline (Gasoline Fuel)

Compare GMC Sierra 2500 mpg with other cars in the same category

To provide context to the mpg for 1999 GMC Sierra 2500 and enable you to compare the 1999 GMC Sierra 2500 mpg with other vehicles, we have crunched the numbers to show you the mpg range and average mpg for each car category that the 1999 GMC Sierra 2500 belongs in.

Category Avg City MPG Avg Highway MPG Avg Combined MPG Min Combined MPG Max Combined MPG
1999 Truck 17 21 19 15 25
1999 3-Passenger Truck 17 22 19 15 25
1999 4WD Truck 16 19 17 15 19
1999 6-Passenger Truck 15 19 17 15 22
1999 Diesel Truck 0 0 0 0 0
1999 Gasoline Truck 17 21 19 15 25
1999 GMC Truck 17 22 19 16 25
1999 RWD Truck 18 23 20 15 25
1999 GMC Sierra 2500 15 19 17 17 17

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