2020 Jeep Gladiator: Transmission & Axle Gear Ratios
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
Working on this 2020 Jeep Gladiator? Run just this one job through Repairius.
No big switch. Write the estimate, text it for approval, and get paid on your phone. Keep everything else the way it is.
14-day free trial · credit card required · cancel anytime
Transmission Gear Ratios
The 2020 Jeep Gladiator is available with two transmission options: an 8-speed automatic and a 6-speed manual.
8-Speed Automatic (850RE)
| Gear | Ratio |
|---|---|
| 1st | 4.71 |
| 2nd | 3.14 |
| 3rd | 2.10 |
| 4th | 1.67 |
| 5th | 1.28 |
| 6th | 1.00 |
| 7th | 0.84 |
| 8th | 0.67 |
| Reverse | 3.30 |
6-Speed Manual (D478)
| Gear | Ratio |
|---|---|
| 1st | 5.13 |
| 2nd | 2.62 |
| 3rd | 1.54 |
| 4th | 1.00 |
| 5th | 0.86 |
| 6th | 0.72 |
| Reverse | 4.49 |
Available Axle Ratios
The Gladiator uses Dana 44 heavy-duty axles in the front and rear. The axle ratio plays a crucial role in the vehicle's performance, affecting both its towing capacity and fuel efficiency.
| Ratio | Available With | Axle Code | Best For |
|---|---|---|---|
| 3.73 | Sport, Overland (Standard) | Balanced | |
| 4.10 | Rubicon (Standard), Max Tow Package | Towing |
How to Identify Your Axle Ratio
Knowing your specific axle ratio is important for ordering parts or understanding your Gladiator's capabilities. Here’s how you can find it:
- VIN Decoder: You can use an online VIN decoder to get a full build sheet for your specific Gladiator, which will include the axle ratio.
- Axle Tag: Look for a metal tag on the differential cover of the rear axle. This tag will have several numbers stamped on it, including the gear ratio (e.g., "3 73" for a 3.73 ratio).
Towing vs. MPG Impact
The axle ratio has a direct and significant impact on both towing performance and fuel economy.
-
Numerically Higher Ratios (e.g., 4.10): These are often referred to as "shorter" gears. They provide more torque to the wheels, which is ideal for towing heavy loads and for low-speed off-road crawling. The trade-off is that the engine has to run at a higher RPM on the highway, which results in lower fuel economy.
-
Numerically Lower Ratios (e.g., 3.73): These are known as "taller" gears. They require less engine RPM at highway speeds, leading to better fuel economy. However, they provide less torque multiplication, which can make the vehicle feel more sluggish when starting from a stop or when towing.
Common Issues
While the Dana 44 axles are generally robust, some issues can arise over time, especially with heavy use or modifications.
- Ring & Pinion Whine: A whining noise from the differential that changes with vehicle speed can indicate worn or improperly set up ring and pinion gears. This often requires a rebuild of the differential by a qualified technician.
- Carrier Bearing Failure: The bearings that support the differential carrier can wear out, leading to a humming or rumbling noise. If left unaddressed, this can cause more severe damage to the differential internals.
Find a driveline shop on Repairius.
More specs for the 2020 Jeep Gladiator
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2020 Jeep Gladiator Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
Browse by make
Running an auto or diesel repair shop?
Compare Repairius to the shop software you're paying for
$99.99/month (first location included), unlimited users, 14-day free trial.