What gas mileage does a GMC Sierra get?

2021 GMC Sierra

EPA MPG Owner MPG Estimates
2021 GMC Sierra Cab Chassis 2WD 8 cyl, 5.3 L, Automatic 6-spd
Regular Gasoline Not Available How can I share my MPG?
Combined MPG:21 combined city/highway MPG City MPG:20 city Highway MPG:23 highway 4.8 gals/ 100 miles
2021 GMC Sierra 2WD 4 cyl, 2.7 L, Automatic 8-spd

Which GMC Sierra has the best gas mileage?

2021 GMC Sierra 1500 2WD Diesel | 26 MPG The smooth, torquey Duramax diesel engine is only available on Sierra double cab (extended-cab) and four-door crew cab models, and it delivers its best fuel economy with two-wheel drive.

Why is my truck all of a sudden getting bad gas mileage?

Here are some the main causes for a sudden drop in gas mileage: Bad oxygen sensor and air filters-in all forms will affect the fuel mixture and your fuel efficiency. Incorrect tire pressure and/or poor alignment-tires that have low pressure or are out of alignment can cause a drop in fuel efficiency.

Why do 4×4 trucks waste more gas?

A 4-wheel drive will use more gas since it has more drivetrain components and weight compared to a 2WD of the same make and model. 4 wheel drives have additional components such as an extra differential, transfer case, and an extra driveshaft.

What gas does a 2021 GMC Sierra take?

Find and Compare Cars

2021 GMC Sierra 4WD AT4
Personalize Find a car 8 cyl, 6.2 L, Automatic 10-spd Compare
Fuel Economy
EPA MPG Premium Gasoline 17 combined city/highway MPG 15 city 19 highway 5.9 gals/100 miles

What is the most economical 4×4 pickup?

8 – Great Wall Steed (32.8mpg)

  • 7 – Volkswagen Amarok (36.2mpg)
  • 6 – SsangYong Korando Sports (37.7mpg)
  • =3 – Isuzu D-Max (38.7mpg)
  • =3 – Toyota Hilux (38.7mpg)
  • =3 – Ford Ranger (38.7mpg)
  • 2 – Mitsubishi L200 Series 5 (42.8mpg)
  • 1 – Nissan NP300 Navara (44.1mpg)