2021 Jeep Gladiator - Maintenance & Specs
The 2021 Jeep Gladiator belongs to a Jeep Gladiator lineup that Know Your Ride tracks across 5 model years, from 2020 to 2025. Engine options on record include the 3.6L, 3.0L, 3.0L V6 / 3.6L V6. It is configured as 4-wheel drive with an automatic 8-spd. The 2021 sits mid-run, with both earlier (2020) and later (2025) Gladiator model years also documented.
It takes 0W-20 full synthetic oil, 5.0 qt with a new filter meeting MS-13340. Fluid specs on file include HOAT coolant, DOT 3 brake fluid, ATF+4 transmission fluid. Know Your Ride lists 15 scheduled maintenance items for this vehicle, the earliest interval falling at 7,500 miles. Documented torque values include oil drain plug 20 ft-lb, lug nut 120 ft-lb, spark plug 18 ft-lb.
NHTSA complaints for this vehicle cluster around steering (47), power train (38), steering,suspension (13). A representative report reads: "Last year I received a message, letter and perhaps an email related to my jeep and recall for the clutch plate assembly. The recall was performed twice because..." There are 7 safety recalls on record; one covers: ...sler (FCA US, LLC) is recalling certain 2018-2021 Jeep Wrangler and 2020-2021 Jeep Gladiator vehicles equipped with manual transmissions. The clutch....
EPA fuel economy is rated at 17 city / 22 highway MPG, 19 MPG combined. Estimated annual fuel cost is about $2,300.
Quick Specs
| Oil viscosity | 0W-20 |
| Oil type | Full Synthetic |
| Oil capacity (w/ filter) | 5.0 qt |
| OEM oil spec | MS-13340 |
| Oil filter | Fram XG10575 |
| EPA combined | 19 MPG |
| Tire size | 265/70R17 |
| Coolant | HOAT |
| Open recalls on record | 7 |
| Technical service bulletins | 200 |
Common Trouble Codes
- P0300 - Random/Multiple Cylinder Misfire Detected
- P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
- P0171 - System too Lean (Bank 1)
- P0128 - Insufficient Coolant Temperature for Stable Operation
- P0442 - Evaporative Emission Control System Leak Detected (small leak)
- P0455 - Evaporative Emission Control System Leak Detected (gross leak)
- P0700 - Transmission Control System Malfunction
- P0301 - Cylinder 1 Misfire Detected
- U0100 - Lost Communication With ECM/PCM A
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Part of the free Know Your Ride vehicle maintenance reference. Figures are sourced from EPA, NHTSA and manufacturer data and are for general reference - always confirm with your owner's manual.