2018 GMC Yukon MPG and Fuel Cost

The 2018 GMC Yukon is rated 16 to 19 mpg combined across 10 EPA-tested gas versions; the best is the 5.3L 8-cyl · RWD · 6-speed automatic.

EPA fuel economy

2018 GMC Yukon · 10 EPA-tested versions

Best EPA rating

19MPG combined

16 city 23 highway

$3,400 a year to fuel

Fuel economy score3/10

5.3L 8-cyl · RWD · 6-speed automatic

Best version costs $5,500 more in fuel over 5 years vs the average new vehicle (EPA)

Fuel cost: 15,000 miles a year at EPA's $4.32 a gallon (regular gas).

Data: US EPA, fueleconomy.govUpdated Sep 27, 2026

At EPA's price assumptions, fuel costs $3,400 to $5,000 a year. Ratings for the best versions are unchanged from 2017.

Every 2018 Yukon version

EPA's ratings for each version it tested. Fuel cost is EPA's estimate for 15,000 miles a year at its current prices.

Version	Combined	City / Hwy	Fuel / year
5.3L 8-cyl · RWD · 6-speed automatic Best EPA listing: Yukon C1500 2WD (also Yukon C1500 XL 2WD)	19 mpg	16 / 23	$3,400
5.3L 8-cyl · RWD · 6-speed automatic · Flex-fuel (E85) EPA listing: Yukon C1500 2WD · Flex-fuel (E85)	19 mpg	16 / 23	$3,400
5.3L 8-cyl · RWD · 6-speed automatic · XL EPA listing: Yukon C1500 XL 2WD · Flex-fuel (E85)	19 mpg	16 / 23	$3,400
5.3L 8-cyl · 4WD · 6-speed automatic EPA listing: Yukon K1500 4WD	18 mpg	16 / 22	$3,600
5.3L 8-cyl · 4WD · 6-speed automatic · Flex-fuel (E85) EPA listing: Yukon K1500 4WD · Flex-fuel (E85)	18 mpg	16 / 22	$3,600
5.3L 8-cyl · 4WD · 6-speed automatic · XL EPA listing: Yukon K1500 XL 4WD	18 mpg	15 / 22	$3,600
5.3L 8-cyl · 4WD · 6-speed automatic · XL · Flex-fuel (E85) EPA listing: Yukon K1500 XL 4WD · Flex-fuel (E85)	18 mpg	15 / 22	$3,600
6.2L 8-cyl · 4WD · 10-speed automatic EPA listing: Yukon K1500 4WD · Premium fuel	17 mpg	14 / 22	$4,700
6.2L 8-cyl · RWD · 10-speed automatic EPA listing: Yukon C1500 2WD (also Yukon C1500 XL 2WD) · Premium fuel	17 mpg	14 / 23	$4,700
6.2L 8-cyl · 4WD · 10-speed automatic · XL EPA listing: Yukon K1500 XL 4WD · Premium fuel	16 mpg	14 / 21	$5,000

Fuel cost at your prices

EPA's annual cost uses 15,000 miles a year, 55% city driving and its current prices: $4.32 a gallon for regular gas and $5.32 a gallon for premium gas. Change the numbers to match your driving.

Version	Per year	Per month	5 years
5.3L 8-cyl · RWD · 6-speed automatic	$3,411	$284	$17,053
5.3L 8-cyl · RWD · 6-speed automatic · Flex-fuel (E85)	$3,411	$284	$17,053
5.3L 8-cyl · RWD · 6-speed automatic · XL	$3,411	$284	$17,053
5.3L 8-cyl · 4WD · 6-speed automatic	$3,600	$300	$18,000
5.3L 8-cyl · 4WD · 6-speed automatic · Flex-fuel (E85)	$3,600	$300	$18,000
5.3L 8-cyl · 4WD · 6-speed automatic · XL	$3,600	$300	$18,000
5.3L 8-cyl · 4WD · 6-speed automatic · XL · Flex-fuel (E85)	$3,600	$300	$18,000
6.2L 8-cyl · 4WD · 10-speed automatic	$4,694	$391	$23,471
6.2L 8-cyl · RWD · 10-speed automatic	$4,694	$391	$23,471
6.2L 8-cyl · 4WD · 10-speed automatic · XL	$4,987	$416	$24,937

At the default settings the results match EPA's annual cost before EPA rounds it to the nearest $50.

GMC Yukon MPG by model year

The best-rated version in each model year; the highlighted year is this page. Gas: 17 to 19 mpg (every year from 2016 to 2026); highest in 2016. Diesel: 23 mpg (2021 to 2026).

Best gas version
Best diesel version

2018: gas 19 mpg · diesel not offered

Show as a table

GMC Yukon best combined mpg by model year
Model year	Best gas version	Best diesel version
2016	19	–
2017	19	–
2018	19	–
2019	18	–
2020	18	–
2021	18	23
2022	17	23
2023	17	23
2024	17	23
2025	17	23
2026	17	23

How the 2018 Yukon compares

2018 full-size SUVs covered on this site, ranked by their best combined rating. Fuel cost is for each model's cheapest version to run, at EPA's prices.

2018 model	Best combined	Best gas	Fuel / year
Ford Expedition Best: gas	20 mpg	20 mpg	$3,250
Chevrolet Tahoe Best: gas	19 mpg	19 mpg	$3,400
Chevrolet Suburban Best: gas	19 mpg	19 mpg	$3,400
GMC Yukon This page Best: gas	19 mpg	19 mpg	$3,400
Toyota Sequoia Best: gas	15 mpg	15 mpg	$4,300

2018 Yukon recalls and complaints

NHTSA lists 5 safety recalls and 126 owner complaints for the 2018 Yukon.What they cover, and crash test ratings

Questions

Does the 2018 GMC Yukon need premium gas?

Some versions do. EPA lists the 6.2L 8-cyl versions on premium, the rest use regular.

How does the 2018 Yukon's MPG compare with the 2017?

For 2018, the best gas version is rated 19 mpg, the same as the year before.

Sources and method

US EPA and Department of Energy fuel economy data (fueleconomy.gov), file dated Sep 18, 2026.
EPA fuel price assumptions: regular $4.32, midgrade $4.93, premium $5.32, diesel $6.29 a gallon; electricity $0.15 per kWh.
Recall and complaint counts: NHTSA recall file dated Sep 27, 2026 and complaint file dated Sep 26, 2026.

Ratings are EPA estimates. Real-world mileage depends on how, where and in what weather you drive. How we build these pages. Spotted an error? Tell us.