2018 Jeep Grand Cherokee MPG
The 2018 Jeep Grand Cherokee gets 11–22 mpg in the city and 17–30 on the highway (13–25 combined), across the 7 versions the EPA rated.
The most efficient pairs the 3.0-liter turbo 6-cylinder engine with an automatic transmission and rear-wheel drive, at 25 mpg combined. The thirstiest version uses the 6.2-liter supercharged 8-cylinder engine with an automatic transmission and all-wheel drive and is rated 13 mpg combined. That is 4 mpg better than the best gasoline 2017 version (21 mpg).
| Version | Engine | Transmission | Drive | City | Hwy | Comb. | Fuel |
|---|---|---|---|---|---|---|---|
| Grand Cherokee 2WD | 3.0 L 6-cyl turbo | Automatic 8-spd | Rear-Wheel Drive | 22 | 30 | 25 | Diesel · 408 g CO₂/mi |
| Grand Cherokee 4WD | 3.0 L 6-cyl turbo | Automatic 8-spd | All-Wheel Drive | 21 | 28 | 24 | Diesel · 432 g CO₂/mi |
| Grand Cherokee 2WD | 3.6 L 6-cyl | Automatic 8-spd | Rear-Wheel Drive | 19 | 26 | 21 | Regular · 414 g CO₂/mi |
| Grand Cherokee 4WD | 3.6 L 6-cyl | Automatic 8-spd | All-Wheel Drive | 18 | 25 | 21 | Regular · 427 g CO₂/mi |
| Grand Cherokee 4WD | 5.7 L 8-cyl | Automatic 8-spd | All-Wheel Drive | 14 | 22 | 17 | Midgrade · 533 g CO₂/mi |
| Grand Cherokee SRT 4WD | 6.4 L 8-cyl | Automatic 8-spd | All-Wheel Drive | 13 | 19 | 15 | Premium · 592 g CO₂/mi |
| Grand Cherokee TrackHawk 4WD | 6.2 L 8-cyl supercharged | Automatic 8-spd | All-Wheel Drive | 11 | 17 | 13 | Premium · 664 g CO₂/mi |
2018 Jeep Grand Cherokee fuel cost per year
Driving 15,000 miles a year on diesel at the September 2026 U.S. average of $6.29 a gallon, the 2018 Jeep Grand Cherokee costs about $3,770 a year to fuel in its most efficient form (25 mpg combined), or roughly 25 cents a mile.
The thirstiest priced version (24 mpg combined) comes to about $3,930 a year, $160 more.
This is an estimate from EPA combined mpg and the EIA national average price; your cost depends on how and where you drive and on local prices.
2018 Jeep Grand Cherokee specs
2018 Jeep Grand Cherokee buyers could choose between 5 engines, according to EPA records: 3.0 L 6-cyl turbo, 3.6 L 6-cyl, 5.7 L 8-cyl, 6.2 L 8-cyl supercharged and 6.4 L 8-cyl. It came with an automatic transmission, in all-wheel drive or rear-wheel drive versions. The EPA classes it as a standard sport utility vehicle.
| Engine size (L) | Cylinders | Transmissions | Drive | Versions |
|---|---|---|---|---|
| 3.0 L turbo | 6 | Automatic 8-spd | Rear-Wheel Drive; All-Wheel Drive | 2 |
| 3.6 L | 6 | Automatic 8-spd | Rear-Wheel Drive; All-Wheel Drive | 2 |
| 5.7 L | 8 | Automatic 8-spd | All-Wheel Drive | 1 |
| 6.2 L supercharged | 8 | Automatic 8-spd | All-Wheel Drive | 1 |
| 6.4 L | 8 | Automatic 8-spd | All-Wheel Drive | 1 |
2018 Jeep Grand Cherokee problems
Owners have filed 855 complaints about the 2018 Jeep Grand Cherokee with NHTSA, the U.S. vehicle-safety agency, as of October 2026.
Electrical system is the most-reported area (28% of component mentions), followed by engine (10%) and power train (6%).
Spread over its time on sale, that is 94 complaints a year: more than the 2017 (36 a year) and the 2019 (46 a year).
That ranks 8th of 17 Jeep Grand Cherokee model years (2008–2024), counting from the most complaints per year.
Of the 855, 42 mention a crash, 10 a fire and 31 an injury.
| Component | Mentions | Share |
|---|---|---|
| Electrical system | 341 | 28% |
| Unknown or other | 267 | 22% |
| Engine | 125 | 10% |
| Power train | 75 | 6% |
| Fuel/propulsion system | 44 | 4% |
| Seats | 43 | 4% |
| Vehicle speed control | 38 | 3% |
| Hydraulic service brakes | 32 | 3% |
| Service brakes | 29 | 2% |
| Air bags | 24 | 2% |
| Exterior lighting | 22 | 2% |
| Forward collision avoidance | 22 | 2% |
| Engine and engine cooling | 17 | 1% |
| Back over prevention | 16 | 1% |
| Diesel fuel system | 16 | 1% |
| Structure | 16 | 1% |
| Suspension | 16 | 1% |
| Steering | 14 | 1% |
| Visibility/wiper | 11 | <1% |
| Seat belts | 9 | <1% |
| Wheels | 9 | <1% |
| Equipment | 7 | <1% |
| Lane departure | 7 | <1% |
| Electronic stability control (esc) | 6 | <1% |
| Visibility | 5 | <1% |
| Gasoline fuel system | 3 | <1% |
| Traction control system | 3 | <1% |
| Interior lighting | 2 | <1% |
| Air service brakes | 2 | <1% |
| Shell carry handle | 1 | <1% |
| Buckle chest clip | 1 | <1% |
| Tires | 1 | <1% |
What owners told NHTSA
The Jeep was giving me a warning sign. It said stop slowly. Your jeep will shut off so I replaced the two batteries. As my Mechanic told me I replaced the alternator. I also replaced the ground wires. …
The contact owns a 2018 Jeep Grand Cherokee. The contact stated that while taking the vehicle to a service center for an oil change, the oil filter plastic housing unexpectedly warped after the oil change. …
I am reporting repeated drivetrain and transmission failures involving my 2018 Jeep Grand Cherokee SRT. The problems began with failure of the driveshaft carrier bearing, which was replaced with a brand-new component by an independent mechanic. …
2018 Jeep Grand Cherokee recalls
NHTSA lists 10 recall campaigns for the 2018 Jeep Grand Cherokee, plus 1 recall of replacement equipment made for it.
The most recent, campaign 24V838000 from November 2024, concerns hydraulic service brakes.
Electrical system accounts for 2 of the 11 campaigns, more than any other area.
18E097000 · October 29, 2018 · Equipment · replacement equipment
Problem: These floor mats may have insufficient clearance between the mat and the accelerator pedal, possibly inhibiting the pedal from returning to an idle position.
Risk: If the floor mat prevents the accelerator pedal from returning to idle, there would be an increased risk of a crash.
Remedy: Chrysler will notify owners, and dealers will replace any of the affected floor mats, free of charge.
18V759000 · October 29, 2018 · Equipment
Problem: The driver's floor mat may have insufficient clearance between the mat and the accelerator pedal, possibly preventing the pedal from returning to the idle position.
Risk: If the floor mat prevents the accelerator pedal from returning to idle, there would be an increased risk of a crash.
Remedy: Chrysler will notify owners, and dealers will replace any of the affected floor mats, free of charge.
18V524000 · August 9, 2018 · Electrical system
Problem: The powertrain control module may be equipped with a voltage regulator chip in the circuit board that may fail, causing a stall or a no start condition.
Risk: A vehicle stall can increase the risk of a crash.
Remedy: Chrysler will notify owners, and dealers will replace the powertrain control module, free of charge.
18V280000 · May 1, 2018 · Power train
Problem: An incorrect transmission park lock rod may have been installed in the transmission.
Risk: If the incorrect park lock rod is installed, the transmission may not shift into 'PARK' and keep the vehicle from moving, increasing the risk of unintended vehicle movement and the risk of a crash.
Remedy: Chrysler will notify owners, and dealers will install the correct park lock rod, free of charge.
18V048000 · January 11, 2018 · Gasoline fuel system
Problem: The fuel line may separate.
Risk: If the fuel line separates, the engine may stall, increasing the risk of a crash.
Remedy: Chrysler will notify owners, and dealers will inspect and, as necessary, replace the fuel line, free of charge.
| Campaign | Reported | Component | Grand Cherokee years covered |
|---|---|---|---|
| 24V838000 | November 7, 2024 | Hydraulic service brakes | 2018–2019 |
| 23V411000 | June 8, 2023 | Engine and engine cooling | 2014–2020 |
| 22V406000 | June 9, 2022 | Diesel fuel system | 2014–2020 |
| 22V426000 | June 9, 2022 | Hydraulic service brakes | 2018–2019 |
| 20V699000 | November 12, 2020 | Engine and engine cooling | 2014–2019 |
| 18V332000 | May 17, 2018 | Electrical system, Vehicle speed control | 2014–2018 |
Safety ratings
NHTSA crash-tested 2 versions of the 2018 Jeep Grand Cherokee; the best overall score is 4 out of 5 stars.
| Version tested | Overall | Frontal | Side | Rollover |
|---|---|---|---|---|
| SUV 4WD | ★★★★☆ | ★★★★☆ | ★★★★★ | ★★★★☆ |
| SUV 2WD | ★★★★☆ | ★★★★☆ | ★★★★★ | ★★★☆☆ |
Crash-test photos: NHTSA (public domain). NHTSA can reuse a test for later model years of the same design.
Compared with other years
Complaints per year on sale divide each model year's NHTSA complaints by the years since it went on sale, so older and newer Jeep Grand Cherokees can be compared fairly. Among other 2018 models in the EPA's standard sport utility vehicle class, the 2018 Toyota Highlander (23 mpg) and 2018 Ford Explorer (22 mpg) come closest on combined fuel economy.
| Year | Best mpg | Complaints | Per year on sale | Recalls |
|---|---|---|---|---|
| 2015 | 25 | 1,367 | 113 | 10 |
| 2016 | 25 | 311 | 28 | 9 |
| 2017 | 21 | 364 | 36 | 6 |
| 2018 | 25 | 855 | 94 | 11 |
| 2019 | 24 | 370 | 46 | 7 |
| 2020 | 21 | 241 | 34 | 3 |
| 2021 | 21 | 501 | 83 | 16 |
Every Jeep Grand Cherokee model year compared →
Similar 2018 models
FAQ
Is the 2018 Grand Cherokee a good car?
We don't rate cars, but the official data gives a picture. The 2018 Jeep Grand Cherokee has 94 NHTSA complaints per year on sale (8th most of 17 model years), 10 recall campaigns, a best overall crash rating of 4 stars and up to 25 mpg combined from the EPA.
What are common 2018 Grand Cherokee problems?
The components owners report most to NHTSA are electrical system (341), engine (125) and power train (75). Complaints are unverified owner reports.
How many recalls does the 2018 Grand Cherokee have?
NHTSA lists 10 recall campaigns and 1 replacement-equipment recall. To see whether a recall is still open on a specific car, enter its VIN at nhtsa.gov/recalls.
What gas mileage does the 2018 Grand Cherokee get?
The EPA rates the versions at 13–25 mpg combined (11–22 city, 17–30 highway).
How much does it cost to fuel a 2018 Grand Cherokee per year?
About $3,770 a year for 15,000 miles in its most efficient form, up to about $3,930 for the thirstiest version, using EPA mpg and the September 2026 U.S. average diesel price of $6.29 a gallon (EIA).