GMC Sierra K15 MPG by year — every rating on record

The GMC Sierra K15 has a combined EPA fuel economy rating for 12 model years, from 2007 to 2018. Across those years its best rated version returned 19 mpg (2014) and its thirstiest returned 14 mpg (2007). The EPA record holds 63 configurations for this nameplate, most recently a Standard Pickup Trucks 4WD.

Year-by-year EPA ratings

Where it has stood in its class

Ranked against every other nameplate the EPA filed under the same class that year. The GMC Sierra K15 placed highest in 2014 at #3 of 10, and lowest in 2007 at #12 of 24. It spent 9 of its 12 ranked years in the top half of its class.

Every configuration on record

All 63 configurations EPA lists for this nameplate, newest first.

How the rating has moved between model years

Comparing the best-rated configuration of each year. 2 of 2 year-over-year steps improved the top rating.

What Sierra K15 fuel costs over a year

At the EPA's 11,500 miles a year, the 2018 GMC Sierra K15 burns 605 to 676 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.

EPA’s own estimate for the 2018 model year is $3,300 to $4,550 a year in fuel, or $5,250 more than the average new vehicle over five years.

How it compares with other Standard Pickup Trucks 4WD

Across the 90 nameplates EPA classifies as Standard Pickup Trucks 4WD, the median best combined rating is 19 mpg. At 19 mpg the GMC Sierra K15 is exactly at the median.

• All Standard Pickup Trucks 4WD rankings — every nameplate in the class, best to worst.

Other GMC nameplates

Every GMC model compared → — all nameplates ranked by best combined rating, with what each one costs a year.