2024 Toyota Tacoma Transmission & Axle Gear Ratios

Transmission gear ratios

The 2024 Toyota Tacoma offers a choice of two transmissions: an 8-speed automatic (ECT-i) and a 6-speed manual (iMT). Each transmission is paired with specific engine options and trim levels, offering a balance of performance and fuel efficiency.

8-Speed Automatic Transmission (ECT-i)

6-Speed Manual Transmission (iMT)

Available axle ratios

The 2024 Toyota Tacoma comes with a variety of axle ratios, depending on the trim level, drivetrain (2WD or 4WD), and engine option. These ratios significantly impact the truck's towing capability, acceleration, and fuel economy.

How to identify your axle ratio

Unlike some domestic manufacturers that place RPO codes on door jambs, Toyota typically doesn't have an easily accessible sticker with a clear axle code for the average owner. The best way to definitively identify your Tacoma's axle ratio is to check the build sheet or specifications provided by the dealership at the time of purchase. Alternatively, a Toyota dealership service department can look up your vehicle's detailed specifications using your VIN. For those comfortable with it, the axle housing itself may have a tag or stamping with codes, though these can be difficult to interpret without a cross-reference guide.

Towing vs MPG impact

Understanding the relationship between axle ratio, towing, and fuel economy is crucial for Tacoma owners. A numerically lower axle ratio (e.g., 3.31) means the engine will operate at lower RPMs at a given speed. This generally translates to better fuel economy on the highway because the engine doesn't have to work as hard. Vehicles with lower axle ratios are typically ideal for daily commuting and light hauling where fuel efficiency is a priority.

A numerically higher axle ratio (e.g., 3.91, 4.30), on the other hand, allows the engine to rev higher at the same vehicle speed. This provides more torque to the wheels, significantly improving towing capacity and off-road performance. While excellent for pulling heavy loads, launching boats, or tackling steep inclines, higher axle ratios usually result in reduced fuel economy due to the engine working harder and consuming more fuel.

For most Tacoma owners, the "balanced" ratios (like 3.42 or 3.58) offer a good compromise, providing decent towing capability without a significant penalty in fuel economy. If you frequently tow near the Tacoma's maximum capacity or engage in serious off-road adventures, the higher ratios of the TRD Pro or Trailhunter models will be more beneficial.

Common issues

While the 2024 Toyota Tacoma is new to the market, and therefore long-term common issues are still emerging, some general driveline components can experience issues across various vehicles:

• Ring and Pinion Whine: This often indicates wear or improper setup of the differential gears. It typically manifests as a howling or whining noise that changes with vehicle speed and whether you're accelerating, coasting, or decelerating.
• Carrier Bearing Wear: The carrier bearing supports the driveshaft. If it starts to wear out, you might hear clunking, vibrations, or a rumble from underneath the truck, especially during acceleration or deceleration.
• Limited-Slip Differential (LSD) Clutch Wear: On models equipped with a mechanical limited-slip differential, the clutch packs can wear over time. Symptoms might include chattering or shuddering from the rear end, particularly when turning, or a decrease in traction on slippery surfaces.

If you experience any unusual noises, vibrations, or performance issues from your Tacoma's driveline, it's best to have it inspected by a qualified technician.

Find a driveline shop on Repairius.