2018 Jeep Wrangler Engine Problems
Owners have filed 99 complaints with NHTSA about engine problems on the 2018 Jeep Wrangler, 5% of all complaints for this model year. Half of the reports with a mileage happened before 15,050 miles. The words owners use most often: “head gasket” (10% of reports).
- 99engine complaints
- 15,050median miles at failure
- 3mention a crash
- 2mention an injury
- 0related recalls
- $4,650typical repair cost reported by owners
- 45%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Head gasket: mentioned in 10 of 99 complaints (10%)
- Start stop: mentioned in 5 of 99 complaints (5%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical engine repair on the 2018 Jeep Wrangler at $4,650, and half of them between $2,000 and $5,000.
Based on 9 NHTSA complaints about this problem alone that state a repair bill or quote (2019–2026), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do engine problems happen?
Based on 38 complaints that reported the odometer reading.
How serious are the reports?
Of 99 complaints, 3 mention a crash, 8 a fire, 2 an injury.
Jeep Wrangler engine complaints by model year
| Model year | Engine complaints | Share of that year | Median miles |
|---|---|---|---|
| 2026 Wrangler | 1 | 9% | — |
| 2025 Wrangler | 28 | 39% | — |
| 2024 Wrangler | 415 | 56% | 20,000 |
| 2023 Wrangler | 106 | 29% | 6,500 |
| 2022 Wrangler | 93 | 23% | 18,500 |
| 2021 Wrangler | 217 | 23% | 26,200 |
| 2020 Wrangler | 54 | 9% | 22,846 |
| 2019 Wrangler | 44 | 6% | 12,000 |
| 2018 Wrangler | 99 | 5% | 15,050 |
| 2017 Wrangler | 62 | 20% | 52,000 |
| 2016 Wrangler | 88 | 19% | 44,000 |
| 2015 Wrangler | 128 | 27% | 47,140 |
| 2014 Wrangler | 322 | 49% | 52,000 |
| 2013 Wrangler | 140 | 21% | 63,500 |
| 2012 Wrangler | 172 | 21% | 40,500 |
| 2011 Wrangler | 36 | 7% | 69,000 |
| 2010 Wrangler | 38 | 6% | 62,000 |
| 2009 Wrangler | 18 | 5% | 64,000 |
| 2008 Wrangler | 37 | 4% | 82,715 |
| 2007 Wrangler | 33 | 6% | 70,500 |
| 2006 Wrangler | 9 | 1% | 72,681 |
| 2005 Wrangler | 19 | 3% | 86,500 |
| 2004 Wrangler | 4 | 2% | 114,000 |
| 2003 Wrangler | 1 | 1% | 38,425 |
| 2002 Wrangler | 4 | 4% | 169,000 |
| 2001 Wrangler | 2 | 1% | 134,000 |
| 2000 Wrangler | 9 | 4% | 120,000 |
| 1999 Wrangler | 1 | 0% | 146,000 |
| 1997 Wrangler | 2 | 0% | 135,000 |
When owners reported it
Related recalls (0)
No safety recall lists engine for the 2018 Jeep Wrangler. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
Misfire no. 4cylinder due to head gasket leak and coolant leaking into cylinder.
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…
What component or system failed or malfunctioned, and is it available for inspection upon request? Jeep started on fire and is still at a tow yard in Belchertown, MA How was your safety or the safety of others put at risk? The Jeep started on fire while I was driving. I pulled over as the engine…
Frequently asked questions
Do all 2018 Jeep Wranglers have engine problems?
No. NHTSA has 99 owner complaints about engine for the 2018 Jeep Wrangler (5% of the 1,824 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2018 Jeep Wrangler engine?
No recall currently lists engine for this vehicle.
At what mileage do engine problems start?
The median reported mileage is 15,050 miles: half of the reports with a mileage came before that.
How much does it cost to fix engine problems on the 2018 Jeep Wrangler?
Owners report a typical cost of $4,650 (half paid between $2,000 and $5,000), from 9 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about engine problems on the 2018 Jeep Wrangler?
The most frequent phrase is “head gasket”, in 10 of 99 complaints, followed by “start stop” (5).
Other 2018 Jeep Wrangler problems
- Steering problems (1,116)
- Suspension problems (342)
- Electrical System problems (268)
- Power Train problems (177)
- Structure problems (97)
- Wheels problems (61)
- Service Brakes problems (53)
See all 2018 Jeep Wrangler problems or engine problems across all Wrangler years.