Engine When replacing a GMET4 long block from a 2021 JL or older, you will need to carry over the injector wiring harness from the original engine, and the Fuel pressure sensor should be replaced with part number: 68212572AB.
full bulletin at NHTSA ↗2018 Jeep Wrangler fuel system problems
severe Owners of the 2018 Jeep Wrangler have filed 3 NHTSA complaints about the fuel system at roughly $1,200 to repair (U.S. federal records, as of October 2026). Source: NHTSA Office of Defects Investigation. See fuel system across all vehicles →
Complaints
3
Recalls
0
Avg fix
$1,200
| Model year | fuel system complaints |
|---|---|
| 2018 Wrangler (this page) | 3 |
| 2020 Wrangler | 10 |
| 2021 Wrangler | 26 |
| 2022 Wrangler | 7 |
1fire
What stands out
Of the 11 model years of Jeep Wrangler we track for fuel system problems, this one has the fewest owner complaints on file (3).
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering fuel system on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Water Pump Inlet Tube Fastener Torque This bulletin involves checking the torque on the water pump inlet tube fasteners to possibly eliminate coolant leak at this location. The customer may describe either a coolant leak or the coolant level is low.
full bulletin at NHTSA ↗Water Pump Inlet Tube Fastener Torque
full bulletin at NHTSA ↗Water Pump Inlet Tube Fastener Torque This bulletin involves checking the torque on the water pump inlet tube fastenersto possibly eliminate coolant leak at this location. The customer may describe either a coolant leak or the coolant level is low.
full bulletin at NHTSA ↗Water Pump Inlet Tube Fastener Torque This bulletin involves checking the torque on the water pump inlet tube fastenersto possibly eliminate coolant leak at this location. The customer may describe either a coolant leak or the coolant level is low.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 0 most recent
Had fuel system trouble with your 2018 Jeep Wrangler?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the fuel system problem on the 2018 Jeep Wrangler?
It's a meaningful issue. 3 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $1,200.
At what mileage does the fuel system typically fail?
Based on the 3 complaints filed, fuel system issues most often appear around 45,500 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $1,200 for fuel system repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to fuel system?
No active recalls currently cover fuel system issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Jeep/Wrangler.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.