This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.
So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.
Our 2015 Jeep Wrangler JK Unlimited just caught on fire. I happened to be in my daughter-??s bedroom, 20 feet away from where the Jeep was parked. I thought I was seeing flames reflecting from the TV, but I realized that they were real. My next thought was that my husband was building a firepit fire. I thought that was weird because he was doing it in the front yard, but I didn-??t think any more about it because I was so focused on my work. I went back to work for a second, but something told me to look again. I did, and then realized that it was the Jeep that was on fire. I screamed for my husband, but couldn-??t find him; I was scared that he was in the Jeep. Actually, he had been in the back yard and heard me screaming, so he ran up front to see what was happening. I called 911 while my husband tried to put the fire out with the water hose, which didn-??t help- the flames kept getting higher. It took firefighters a while to extinguish the flames and to get it cooled off. The engine appears to be melted. It is in our yard and available for inspection. The fire fighters made a report that my husband has requested. We-??re waiting on the insurance company to contact us. The fire smelled electrical. We smelled no gasoline. I was absolutely horrified thinking about what might have happened if it had ignited at night when no one was looking. My daughter, my pets, my husband, and I could have all been casualties of this spontaneous fire. The fact that it was day time, the unusual coincidence that I was where I was so that I saw the fire, and the fact that my husband parked on a different side of the yard than usual, all probably are the reasons we are alive today. Had any one of those events not been in play, it could have been a very different outcome. My husband had no indication that there was a problem with the Jeep. He-??d just driven it. He reported no odors and no problems at all. He takes excellent care of it, so it was in great condition.
The contact owns a 2015 Jeep Wrangler. The contact stated that while driving at 40-50 MPH on the highway far right lane, several unknown warning lights illuminated as smoke was coming from under the hood. The contact stated that the accelerator pedal felt as if the friction was lost against her foot, and the accelerator pedal traveled all the way to the floorboard as the vehicle failed to accelerate. The contact immediately pulled over to the side of the highway, turned off the vehicle, opened the front driver's side door, and noticed smoke and flames coming from beneath the vehicle. The fire department was notified and extinguished the fire. A fire department report was filed. No physical injuries were sustained; however, the contact stated she sustained emotional distress. The vehicle was towed to an independent mechanic; however, the failure was not diagnosed. The vehicle was not repaired. The contact stated that the vehicle was being stored at the independent mechanic. The manufacturer was not notified of the failure. The failure mileage was 138,934.
2015 Jeep Wrangler with 3.6l Pentastar Engine having repeated engine failures associated with the use of possibly defective repair parts / defective cylinder head repairs / recurring cylinder 6 misfire alerts..
I am having my oil cooler housing replaced once again after having replaced only 4 years ago. I am on my 3rd radiatior and 3 thermostat. This jeep is not driven hard or offroad and has been maintained in excellent condition. This engine is junk and not safe. I have not had warning lights only oil drippings in the driveway yet the oil level doesnt seem to change. If not caught this will cause your engine to lock up.
On a trip on 7/3/2025 out of state the engine failed due to a blown head gasket, which is the third engine related problem I have experienced. Other issues include: Broken exhaust valve spring, cracked oil filter housing. With being the original owner and having only 84,000 miles I feel this has to be an issue Jeep is having with my engine 3.6 Liter V6. I am lodging a formal complaint to hopefully, have help with the $11,000 quoted price to replace my engine. Thank you
- Medina, OH, USA
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The component that is failing is unknown. Unknown to mechanics because a code is not thrown. I can be driving in my neighborhood, on the highway or coasting and my Jeep stalls. Everything else is working, radio, heater just the rpm goes to zero. I have to quick turn on my hazards and prey I can coast to safety. Once out of traffics way and I am in park my car will restart no problem. my safety is at risk because it will happen on the highway. My mechanic has checked all the sensors, fuel pump and filter, battery cables, alternator you name it its been checked or replaced. I have read Jeep forums to see what others are saying and there are over 100 other jeeps that have this same problem. People are spending thousands of dollars to change out computers several times for it to keep happening and jeep has no answers. It first happened two years ago, then about one time 6 months later and then 6 months are that it happened again. But recently its been happening everyday. No matter it I am coasting, on the highway or in my local area it will stall. No warning lights no engine lights just no response in the gas peddle when it stalls. This is going to be super dangerous if other jeeps keep stalling on the highways. Check out forums it happens all the time. Jeep dealers just want to keep changing sensors for 200 here and there.
The contact owns a 2015 Jeep Wrangler. The contact stated that while driving 30 MPH, there was an abnormal sound coming from the engine. The check engine warning light was illuminated. The vehicle was taken to a dealer, who determined that there was a misfire in cylinders #1 and #2, and the right intake valve needed to be replaced. The vehicle was not repaired. The vehicle remained at the dealer and had not been driven since. The manufacturer was made aware of the failure. The failure mileage was approximately 86,096.
So I was driving into work on the interstate yesterday around 10am, and my jeep started to die out of nowhere. I almost got in a wreck. I was able to pull over on the side, and the engine light came on and I took it straight to the auto mechanic. I guess my oil filter housing unit is bad and is causing my oil to leak. The auto mechanic said this is a KNOWN issue in the design flaws of Crysler vehicles including my jeep wrangler with the 3.6L engines. This could have gone much worst for me, and after doing some more research this is happening in their 3.6L Engines and is a confirmed design flaw. The issue is reported to affect vehicles with the Pentastar V6 engine, including models like the Jeep Wrangler, Chrysler 300, and Dodge Charger, from around 2013 to 2021. They are saying it's not a safety issue, yet I almost caused an accident as my jeep started to die while driving 70 mph. This needs to be recalled asap!!! It more than likely has already caused accidents.
Lack of oil in the heads after sitting for a while results in dry valve train at start up and over time results in premature failure of hydraulic lifters not pumping up and rocker arms and cams being dry until oil reaching these parts.
Same problem that I'm having is happening to thousands of people. People are either swapping engines ($20k+) or fixing for ($5k+)Sand debris left in 3.6 engine at time of manufacturing that causes cooling system repair and eventually engine head replacement because of misfire warning. My jeep has 60k miles. Have already replace radiator 2 years ago and now I'm getting misfire on cylinder 2. Ran compression test on cylinder 2. Only 80 psi showing on gauge compared to 150 psi in the other cylinders. Head is bad. There has been a extended warranty on older jeeps with same engine to fix the issue but, not for 2014 and up. Which makes no sense. PLEASE HELP
The radiator is poorly built and leaks, I have had mine replace several times by the dealership This is dangerous because it causes overheating in the engine which can cause hose to bust and engine to seize up. The oil filter house is engineered incorrect and all of them have been breaking causing oil to leak which again, ruins other components in the engine because of loss of oil. Its dangerous because the oil that leaks down through the outer portion of the engine, through to the sides and leaks over the bottom of the transmission onto the ground which is: 1. Environmental hazard- oil leaking causes water pollution, soil contamination, harm to animals and plants 2. Leaking oil is a FIRE HAZARD and safety issues for other vehicles causing slippery conditions for other vehicles 3. Causes engine damage and eventually failure I urge you to obtain the records of all the repairs jeep dealers did both under warranty and past the warranty dates. Your team will see what an issue this is and the 10000000s of Jeep Wranglers that have had these unsafe problems with the OIL Filter Housing and Radiator issues during and after the warranty. Jeep / Chrysler have created a deceptive way for revenue by allowing Jeep dealers to charge the customers for faulty engineering so they can gain profits in repairs that is the Manufacturer's own fault thereby gouging Jeep Wrangler owners.
while driving at an 50 MPH speed, the check engine warning light illuminated and flashing continuously. The vehicle was not in drivable condition since it was unusually vibrating while either standing or driving at very low speed. The vehicle was taken to an independent mechanic, who determined that there was a cylinder #2 misfire, and that the valve, cylinder head or crack on the casting causing this issue. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 75,000.
The contact owns a 2015 Jeep Wrangler. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic, who determined that there was a cylinder #2 misfire, and that the valve needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 88,000.
2015 original owner, developed misfire cylinder #4 P0304, replaced coils, plugs, injectors, harness on that side. Misfire still present, noted others have reported issues with cylinder head (valves, cams, rockers). Engine has a slight tick, found no recalls on NHTSA site except for 2014 versions with same engine for this exact issue.
The engine has a known failure causing a cylinder misfire that is resolved by replacing the cylinder heads. This is a known issue to FCA and caused an extension of the powertrain warranty for the 2010-2014 models but does not cover later engines, that are still experiencing the same issues. The covered years needs to be extended to 2018 or beyond and all out-of-pocket repair costs should be refunded to the consumer.
My Jeep has the pentastar 3.6l engine and has recently developed what is known as the -??pentastar tick-??. This is caused by a design flaw with the valvetrain, specifically the lifters/rocker arms that causes excessive wear which leads to the tick, which may then lead to engine failure and loss of control. This is a very common problem with the 3.6 engine and FCA should be held responsible for the safety recall. FCA has already acknowledged the problem on 2012-2014 engines, and extended the warranty, but not on the later engines. Please look out for the consumer and hold them accountable.
The contact owns a 2015 Jeep Wrangler. The contact stated while driving at an undisclosed speed, the vehicle unexpectedly stalled with the check engine warning light illuminated. The vehicle was taken to an independent mechanic; however, the contact was unsure about the diagnostic result. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown.
A D V E R T I S E M E N T S
- Columbia, SC, USA