2022 Toyota Tacoma: Transmission & Axle Gear Ratios

Transmission Gear Ratios

For the 2022 model year, the Toyota Tacoma was available with two transmission options: a 6-speed manual and a 6-speed automatic.

6-Speed Manual Transmission (RC62F)

6-Speed Automatic Transmission (AC60F)

Available Axle Ratios

Toyota offered a few different final drive ratios for the 2022 Tacoma, tailored to different engines and drivetrain configurations. The ratio is determined by the ring and pinion gear set within the rear differential.

How to Identify Your Axle Ratio

Unlike domestic brands like GM, Ford, or Ram, which often use easily accessible RPO code stickers or differential tags, identifying a Toyota's axle ratio can be a bit more involved. The most reliable method is checking the certification label on the driver-side door jamb.

Look for a code on the bottom left of the sticker, next to "A/TM". This stands for "Axle / Transmission". The first four characters represent the axle code. For example, if you see "A04C/A750E," your axle code is "A04C". You can then use the table above or consult an online decoder to determine your specific gear ratio. The VIN decoder is another reliable method; many online services can pull up your vehicle's original build sheet, which will list the final drive ratio.

Towing vs. MPG Impact

The axle ratio has a significant impact on both your Tacoma's towing capacity and its fuel efficiency. The relationship is a straightforward trade-off:

• Numerically Higher Ratios (e.g., 4.30:1): These are often called "shorter" gears. They multiply the engine's torque more effectively, making it easier to get a heavy load moving. This is ideal for towing, hauling heavy payloads, or tackling steep off-road inclines. The engine will rev higher at any given speed, which increases fuel consumption and can lead to more engine noise on the highway.

• Numerically Lower Ratios (e.g., 3.909:1): These are known as "taller" gears. They require less engine RPM to maintain a certain speed. This results in better fuel economy and a quieter ride at highway speeds, making it the preferred choice for daily commuting and long-distance driving with minimal loads. The trade-off is reduced towing performance and less "off-the-line" acceleration.

For the 2022 Tacoma, the V6 models paired with the manual transmission received the aggressive 4.30:1 ratio to compensate for the transmission's gearing and enhance their off-road prowess. Most automatic V6 models utilized the more balanced 3.909:1 ratio to provide a good mix of everyday drivability and fuel efficiency.

Common Issues

While the Toyota Tacoma is renowned for its durability, the driveline is not without some commonly reported issues. Owners have occasionally noted a "whining" or "howling" noise from the rear differential, particularly under deceleration. This can sometimes be attributed to improper backlash in the ring and pinion gears from the factory or wear over time. Some early third-generation models experienced issues with carrier bearing wear. If you have a TRD Off-Road or TRD Pro model with the electronically locking rear differential, it’s important to service the differential with the correct fluid to ensure the locking mechanism and any limited-slip components function correctly for years to come.

Find a driveline shop on Repairius.