2018 Jeep Wrangler fuel/propulsion system problems
18 owner complaints filed with NHTSA name the fuel/propulsion system on the 2018 Jeep Wrangler — 1% of all complaints for this model year.
What owners report
“I purchased this 2018 Jeep Wrangler JK Unlimited on July 19, 2025. Since purchasing the vehicle, I have experienced repeated mechanical failures that have required multiple repairs. The most serious issue involves the engine overheating at highway speeds without any visible coolant leak or clearly…”
filed Jul 13, 2026
“The vehicle is a 2018 Jeep Wrangler with a 3.6L engine and approximately 124,000 miles. The engine has experienced a failure involving multiple components, including suspected head gasket failure, significant oil loss with no visible external leak, low oil pressure, and engine knocking. Diagnostic…”
filed Mar 30, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other Wrangler years
| Year | Reports | Share |
|---|---|---|
| 2025 Wrangler | 18 | 31% |
| 2024 Wrangler | 150 | 23% |
| 2023 Wrangler | 43 | 13% |
| 2022 Wrangler | 50 | 13% |
| 2021 Wrangler | 92 | 10% |
| 2020 Wrangler | 30 | 5% |
| 2019 Wrangler | 9 | 1% |
| 2017 Wrangler | 13 | 4% |
| 2016 Wrangler | 13 | 3% |
| 2015 Wrangler | 15 | 3% |
| 2014 Wrangler | 19 | 3% |
| 2013 Wrangler | 30 | 5% |
Other reported problem areas on the 2018 Jeep Wrangler
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.