2022 Jeep Wrangler Transmission & Axle Gear Ratios

The 2022 Jeep Wrangler (JL) remains a benchmark for off-road capability, offering a diverse array of powertrains to suit everything from daily commuting to hardcore rock crawling. A crucial part of this capability lies in its drivetrain gearing. Whether you are climbing steep grades, towing a camper, or trying to maximize your highway fuel economy, understanding the gear ratios in your transmission and axles is essential.

Here is your comprehensive guide to the 2022 Jeep Wrangler transmission and axle gear ratios.

Transmission gear ratios

For the 2022 model year, the Jeep Wrangler is available with two primary transmission choices: a 6-speed manual (Aisin D478) standard on most 3.6L V6 models, and an 8-speed automatic (TorqueFlite 850RE for 2.0L and 3.6L engines, or the heavier-duty ZF 8HP75 for the 3.0L EcoDiesel and 6.4L V8 Rubicon 392).

6-Speed Manual (Aisin D478)

8-Speed Automatic (TorqueFlite 850RE / ZF 8HP75)

Available axle ratios

Jeep provides an impressive range of factory axle ratios to complement its various trims, tire sizes, and engine outputs. From the standard commuter-friendly gears to the ultra-low crawler gears in the Xtreme Recon package, here is what you can find under a 2022 Wrangler.

How to identify your axle ratio

If you bought your 2022 Jeep Wrangler used or simply aren't sure which packages were installed at the factory, there are a few reliable ways to check your axle ratio:

1. The Axle Tag: Crawl underneath the rear of the Jeep and inspect the differential cover. Factory Dana axles (Dana 30, Dana 35, or Dana 44) typically feature a metal tag secured by one or two of the differential cover bolts. This tag will have the ratio (e.g., "3.45" or "4.10") stamped directly into the metal.
2. Window Sticker / Build Sheet: If you have the original window sticker (Monroney label), the axle ratio is listed under the standard equipment or optional equipment sections.
3. VIN Decoder / Build Sheet Tool: FCA (Stellantis) provides a public build sheet tool. By entering your VIN on the official Jeep owner's site, you can pull up a complete list of factory equipment, which will clearly list your axle code and gear ratio.

Towing vs MPG impact

When it comes to gear ratios, there is always a trade-off between pulling power and fuel efficiency.

• Numerically lower ratios (e.g., 3.45:1): Often referred to as "tall" gears, these allow the engine to run at lower RPMs at highway speeds. This setup is ideal for maximizing fuel economy (MPG) and comfortable high-speed cruising, but it reduces off-the-line acceleration and makes towing a heavy trailer more sluggish.
• Numerically higher ratios (e.g., 4.10:1, 4.56:1, 4.88:1): Known as "short" or "low" gears, these increase the mechanical advantage of the drivetrain. This is significantly better for towing, climbing steep off-road obstacles, and turning heavier, oversized aftermarket tires. The downside is that your engine will run at higher RPMs on the highway, resulting in reduced fuel economy and slightly more cabin noise.

Common issues

While the Dana 44 and Dana 30 axles found under the 2022 Wrangler are robust, heavy off-roading or improper maintenance can lead to some known driveline issues:

• Ring & Pinion Whine: Often caused by improper gear meshing, either from factory setup variations, bearing wear, or improper break-in procedures if gears were swapped. A high-pitched whine that changes on acceleration vs. deceleration is a classic symptom.
• Axle Seal Leaks: Off-roading through deep mud and water can allow grit to damage the axle tube seals, leading to gear oil leaks near the wheels.
• Locker Sensor Failures: On Rubicon models, the electronic locker sensors can sometimes become contaminated with gear oil or fail electronically, causing a blinking locker light on the dashboard even when the locker is disengaged.
• Carrier Bearing Wear: Oversized tires put excessive strain on the differential carrier bearings. If you hear a low rumble or growl from the rear end, it may be time for a bearing replacement.

Find a driveline shop on Repairius.