2018 Jeep Grand Cherokee MPG and Fuel Cost

The 2018 Jeep Grand Cherokee gets up to 21 mpg combined with a gas engine and up to 25 mpg with the diesel, across 7 EPA-tested versions.

EPA fuel economy

2018 Jeep Grand Cherokee · 7 EPA-tested versions

Best gas version

21MPG combined

18 city 25 highway

$2,950 a year to fuel15,000 miles a year at EPA's $4.00 a gallon (regular gas)

Fuel economy score4/10

3.6L 6-cyl · AWD · 8-speed automatic

Best diesel version

25MPG combined

22 city 30 highway

$3,750 a year to fuel15,000 miles a year at EPA's $6.13 a gallon (diesel)

Fuel economy score5/10

3.0L turbo 6-cyl diesel · RWD · 8-speed automatic

Best version costs $7,750 more in fuel over 5 years vs the average new vehicle (EPA)

Data: US EPA, fueleconomy.govUpdated Nov 12, 2026

At EPA's price assumptions, fuel costs $2,950 to $5,950 a year. New for 2018: a diesel version.

About a typical Grand Cherokee year

The 2018 drew 168 owner complaints in its first three years, against about 180 for a typical Grand Cherokee year (about 144 for a typical year since 2016).

Years to avoid: 2014, 2015, and 2023. Based on owner complaints, not adjusted for sales.

Every Grand Cherokee year ranked The 2018 Grand Cherokee's recalls and problems

Every 2018 Grand Cherokee 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
Gas
3.6L 6-cyl · AWD · 8-speed automatic EPA listing: Grand Cherokee 4WD	21 mpg	18 / 25	$2,950
3.6L 6-cyl · RWD · 8-speed automatic EPA listing: Grand Cherokee 2WD	21 mpg	19 / 26	$2,950
5.7L 8-cyl · AWD · 8-speed automatic EPA listing: Grand Cherokee 4WD · Midgrade fuel	17 mpg	14 / 22	$4,200
6.4L 8-cyl · AWD · 8-speed automatic EPA listing: Grand Cherokee SRT 4WD · Premium fuel	15 mpg	13 / 19	$5,150
6.2L supercharged 8-cyl · AWD · 8-speed automatic EPA listing: Grand Cherokee TrackHawk 4WD · Premium fuel	13 mpg	11 / 17	$5,950
Diesel
3.0L turbo 6-cyl diesel · RWD · 8-speed automatic Best EPA listing: Grand Cherokee 2WD	25 mpg	22 / 30	$3,750
3.0L turbo 6-cyl diesel · AWD · 8-speed automatic EPA listing: Grand Cherokee 4WD	24 mpg	21 / 28	$3,950

Fuel cost at your prices

EPA's annual cost uses 15,000 miles a year, 55% city driving and its current prices: $4.00 a gallon for regular gas, $4.61 a gallon for midgrade gas, $5.01 a gallon for premium gas, and $6.13 a gallon for diesel. Change the numbers to match your driving.

Version	Per year	Per month	5 years
3.6L 6-cyl · AWD · 8-speed automatic	$2,857	$238	$14,286
3.6L 6-cyl · RWD · 8-speed automatic	$2,857	$238	$14,286
5.7L 8-cyl · AWD · 8-speed automatic	$4,068	$339	$20,338
6.4L 8-cyl · AWD · 8-speed automatic	$5,010	$418	$25,050
6.2L supercharged 8-cyl · AWD · 8-speed automatic	$5,781	$482	$28,904
3.0L turbo 6-cyl diesel · RWD · 8-speed automatic	$3,678	$307	$18,390
3.0L turbo 6-cyl diesel · AWD · 8-speed automatic	$3,831	$319	$19,156

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

Jeep Grand Cherokee MPG by model year

The best-rated version in each model year; the highlighted year is this page. Gas: 18 to 23 mpg (every year from 2010 to 2026); highest in 2026. Diesel: 24 to 25 mpg (2014 to 2016, 2018 to 2019); highest in 2014.

Best gas version
Best diesel version

2018: gas 21 mpg · diesel 25 mpg

Show as a table

Jeep Grand Cherokee best combined mpg by model year
Model year	Best gas version	Best diesel version
2010	18	–
2011	18	–
2012	19	–
2013	19	–
2014	20	25
2015	20	25
2016	21	25
2017	21	–
2018	21	25
2019	21	24
2020	21	–
2021	21	–
2022	22	–
2023	22	–
2024	22	–
2025	22	–
2026	23	–

Every Grand Cherokee year's ratings in one table

How the 2018 Grand Cherokee compares

2018 midsize 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
Lexus RX Best: hybrid	30 mpg	23 mpg	$2,600
Toyota Highlander Best: hybrid	29 mpg	23 mpg	$2,150
Jeep Grand Cherokee This page Best: diesel	25 mpg	21 mpg	$2,950
Hyundai Santa Fe Best: gas	24 mpg	24 mpg	$2,600
Kia Sorento Best: gas	24 mpg	24 mpg	$2,600
Ford Edge Best: gas	24 mpg	24 mpg	$2,600
Mazda CX-9 Best: gas	24 mpg	24 mpg	$2,600
Nissan Murano Best: gas	24 mpg	24 mpg	$2,600
Volkswagen Atlas Best: gas	24 mpg	24 mpg	$2,600
Honda Pilot Best: gas	23 mpg	23 mpg	$2,700
Nissan Pathfinder Best: gas	23 mpg	23 mpg	$2,700
GMC Acadia Best: gas	23 mpg	23 mpg	$2,700
Ford Explorer Best: gas	22 mpg	22 mpg	$2,850
Chevrolet Traverse Best: gas	22 mpg	22 mpg	$2,950
Dodge Durango Best: gas	21 mpg	21 mpg	$2,950
Buick Enclave Best: gas	21 mpg	21 mpg	$2,950

2018 Grand Cherokee recalls and complaints

NHTSA lists 10 safety recalls and 856 owner complaints for the 2018 Grand Cherokee.

Owners most often describe backup camera problems (79 complaints, 9%), then infotainment failures (55). NHTSA's overall crash rating: 4 stars for the versions it has rated.

See the 2018 Grand Cherokee recalls and problems

Questions

Does AWD lower the 2018 Jeep Grand Cherokee's gas mileage?

Sometimes. On versions that differ only in drive, the gap ranges from 0 to 1 mpg combined: the 3.0L turbo 6-cyl diesel gets 25 mpg combined with two-wheel drive and 24 with AWD.

Does the 2018 Jeep Grand Cherokee need premium gas?

Some versions do. EPA lists the 6.2L supercharged 8-cyl and the 6.4L 8-cyl on premium, the diesel runs on diesel fuel, and the rest use regular.

How does the 2018 Grand Cherokee's MPG compare with the 2017?

For 2018, the best gas version is rated 21 mpg, the same as the year before.

Sources and method

US EPA and Department of Energy fuel economy data (fueleconomy.gov), file dated Nov 4, 2026.
EPA fuel price assumptions: regular $4.00, midgrade $4.61, premium $5.01, diesel $6.13 a gallon; electricity $0.15 per kWh.
Recall and complaint counts: NHTSA recall file dated Nov 12, 2026 and complaint file dated Nov 11, 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.