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What 55 owners told NHTSA about the 2023 Jeep Gladiator Diesel

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (55)Crash / fire / injury (3)Electrical system (14)Suspension (12)Steering (10)Fuel system (8)Transmission & drivetrain (8)Engine (7)Brakes (4)Airbags (2)Speed control (2)Wheels (2)

4 of 55 complaints match · Brakes · clear filters

Jun 24, 2026Brakes

Parking brake would not hold vehicle on hill. When the handle was released, a metalic clinking noise was heard. Castle rock jeep dealership said all was fine. Upon my inspection, I found the parking brake cable connection under teh center console was no longer connected. The cable was reconnected, and the cable was tightened to specifications indicated my Jeep. THe vehicle had 6200 miles on it. p.s. THis was after the warranty replacement of the engine. THe dealership indicated they tested several other jeeps and they all acted as mine. No concern for safety.

NHTSA ODI 11746285

Apr 23, 2024Brakes

Parking/emergency brake has become unattached and no longer functions. It is a manual transmission and the parking brake is required to keep the vehicle from possibly rolling once parked.

NHTSA ODI 11584730

Apr 1, 2024Brakes

Purchased new in 2023....vehicle soon started making a "hissing" sound from steering area normally upon first morning startup. The vehicle would then go forward or in reverse when I attempted to come out of "park" but had not released brake yet. brought to dealer for repair 2/26/24 at 6162 miles. dealer replaced vacuum pump as cause of concern. the issue seemed resolved for maybe less than two weeks. same issue returned. The safety concern is that the vehicle should not move with the brake pedal pressed and this issue is allowing the vehicle to move. the brakes have to be pumped several times to get them to work when the issue arises. vehicle is currently back at the dealer since 3/28/24 trying to replicate the issue to resolve since no DTC's are coming up.

NHTSA ODI 11580496

Nov 12, 2023Brakes

At 5,700 miles on my 2023 Gladiator the drivers side rear brake caliper bolt fell out. This created a loud bangin inside the wheel and damaged the wheel as well. Upon stopping the caliper pivoted and lodged into the wheel not allowing me to back up.

NHTSA ODI 11554745

Working with the data? Download all 55 complaints as CSV · fetched from NHTSA July 13, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2023 Jeep Gladiator Diesel verdict →