How many miles to the gallon on an 450 (7.4)GMC suburban?

Asked by May 16, 2018 at 06:44 PM about the 1999 GMC Suburban

Question type: General

2 Answers

126,875

Probably about 12 average.

123,385

Depends on your final drive ratio. I've seen mileage as low as 5 MPG to as high as 18 MPG. The higher the numbers the lower it's geared and the worse the fuel mileage but low end torque is great, the smaller the numbers the better the fuel mileage but the torque is reduced.

Your Answer:

GMC Suburban Experts

  • #1
    Larry Thibert
    Reputation
    280
  • #2
    ShadetreeMech
    Reputation
    260
  • #3
    tennisshoes
    Reputation
    180
View All

Related Models For Sale

Used Chevrolet Suburban
306 Great Deals out of 21,281 listings starting at $1,800
Used GMC Yukon XL
213 Great Deals out of 15,250 listings starting at $1,975
Used GMC Yukon
318 Great Deals out of 24,610 listings starting at $2,200
Used Chevrolet Tahoe
602 Great Deals out of 38,250 listings starting at $1,000
Used Ford Expedition
404 Great Deals out of 21,391 listings starting at $1,800
Used Cadillac Escalade
234 Great Deals out of 11,888 listings starting at $1,160
Used GMC Sierra 1500
645 Great Deals out of 54,805 listings starting at $1,800
Used Ford F-150
2,327 Great Deals out of 183,099 listings starting at $1,299
Used Chevrolet Silverado 1500
1,771 Great Deals out of 151,095 listings starting at $1,295
Used Dodge Durango
344 Great Deals out of 26,816 listings starting at $1,300
Used Ford Explorer
1,023 Great Deals out of 76,679 listings starting at $1,275
Used Toyota 4Runner
294 Great Deals out of 31,934 listings starting at $2,305

Used Cars for Sale

1999 GMC Suburban For Sale
68 listings starting at $4,400

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.