2020 Jeep Gladiator Engine Problems
- Complaints
- 45about this part
- Share
- 9%of 484 total for the year
- Median mileage
- 1,036miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 45 complaints about the engine of the 2020 Jeep Gladiator, 9% of the 484 complaints for this model year. Where a mileage was given, the median is 1,036 miles. 1 of these say a crash was involved and 3 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I entered the highway and my power steering light came on. I then lost power steering. Immediately got off at the next exit and pulled into the gas station. As I exited my vehicle I observed smoke coming from the hood vents. The engine bay then became fully engulfed in flames and the fire department responded to extinguish the fire. Vehicle is total loss.”
NHTSA complaint #11373567, filed 2020-11, 23,000 miles“Starting at just over 100 miles my vehicle started displaying a electronic start/stop systems errors and the check engine light came one. The cel was caused by engine misfires and show code p0300. I took the vehicle to the dealership and was told that FCA was aware of the problem and it was well know, but no fix is available. The misfires cause engine stumble and inability to accelerate as expected when pulling out or crossing oncoming traffic. The NHTSA may want to investigate as FCA does not have an answer. …”
NHTSA complaint #11355403, filed 2020-09, 112 miles“On my 2020 Jeep Gladiator rubicon ess and check engine light came on at 249 miles. Check engine light code was p0300 multiple cylinder misfire. Took it to the dealer monroe dodge and they replaced the battery for ess and did a recommended PCM flash for the check engine light. I pulled out of the dealership and check engine light was immediately back on followed by ess light. Dealer immediately hooked up the scanner and they said the p0300 multiple cylinder misfire is back on. Dealer is saying they have to tear into the engine. …”
NHTSA complaint #11352814, filed 2020-09, 249 miles“Jeep wanders all over the road with very little steering play in the wheel. It does not matter if you are going 40 or 80mph, it wanders. My wife drove it the other day and said she felt like everyone would think she was drunk. I took this into the dealer to have it checked and they said it was withing manufacturers spec. All steering and suspension components were tight according to their diagnosis. They did not see an issue and this wandering was normal. It is almost impossible to keep it on the road with gusty winds at 60mph. …”
NHTSA complaint #11339632, filed 2020-07, 380 miles“I have had the Jeep Gladiator since november 2019 and it has had multiple engine issues on three different occasions leading up to what I was told was blown head gaskets . It started after just a few months with less than 1000 miles with the check engine light coming on. The engine would also run rough. They believed it was bad fuel. At approximately 8 months the same thing happened at around 3500 miles. This time the said it was a bad cylinder. Now at 14 months and at around 8000 miles my high temp light came on out of no where and smoke appeared under the hood. …”
NHTSA complaint #11397406, filed 2021-02, 8,000 milesRelated service bulletins
- 11035078Jul 7, 2026CORE – HEATER
- 11035077Jul 7, 2026CORE – HEATER
- 11034335Jun 18, 2026Bolt - hex flange head
- 11030229Mar 21, 2026Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of…
- 11025028Oct 21, 2025Engine Oil Leak
- 11023618Sep 24, 2025Data collection required for all 2020-2026MY vehicles with 3.6L PSU engines during any of their first 3 engine oil changes. This data collection is applicable to all vehicle with…
- 11021043Jul 26, 2025Engine Rattle Noise
- 11020767Jul 8, 2025Verify Reman part number availability. Order the "R" part number for all orders:
- 11020608Jul 3, 2025When replacing a camshaft and parts kit (P/N 68661146xx and/or 68661147xx), it is NOT necessary to order the roller-finger followers (rocker arms) separately, as these are…
- 11019773Jun 18, 2025ADJUSTER Valve Lash Customer's complaint may include a ticking noise coming from the engine. Technician's observations can refer to spongy or stuck hydraulic lash adjusters…
Engine: other model years
Other parts of the 2020 Jeep Gladiator
183 complaintsSteering
181 complaintsTransmission and drivetrain
55 complaintsOther or unknown
33 complaintsSuspension
32 complaintsVisibility (wipers, defrost, mirrors)
23 complaintsBrakes
18 complaintsExterior lighting
11 complaintsBody and structure
11 complaintsVehicle speed control
11 complaintsFuel system
9 complaintsForward collision avoidance
7 complaints
← All problems reported for the 2020 Jeep Gladiator
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology