2019 Toyota RAV4 Transmission & Axle Gear Ratios

Transmission gear ratios

The 2019 Toyota RAV4 offers a single transmission option across all gasoline models: an 8-speed automatic transmission. Hybrid models are equipped with an electronically controlled continuously variable transmission (ECVT).

8-Speed Automatic Transmission (Gasoline Models)

Electronically Controlled Continuously Variable Transmission (ECVT) (Hybrid Models)

The ECVT in hybrid models does not have traditional gears. Instead, it uses a planetary gear set to blend power from the gasoline engine and electric motor, providing a seamless and continuously variable range of ratios.

Available axle ratios

The 2019 Toyota RAV4, both gasoline and hybrid models, comes with specific final drive ratios that are integrated with the transmission. Unlike many trucks and SUVs, the RAV4 typically doesn't offer multiple axle ratio options for a given powertrain. The final drive ratios are optimized for the vehicle's intended use, balancing performance and fuel economy.

Gasoline Models (8-Speed Automatic)

Hybrid Models (ECVT)

Note: Hybrid models feature separate final drive ratios for the front and rear axles due to the electric motor driving the rear wheels independently.

How to identify your axle ratio

For the 2019 Toyota RAV4, identifying your specific axle ratio isn't as straightforward as with some other vehicles that offer multiple options or have easily accessible RPO codes for differentials. Since the final drive ratio is integrated into the transaxle and doesn't vary by trim level for a given powertrain, looking up an RPO code on a door-jamb sticker or an axle tag won't typically be necessary or fruitful.

Your owner's manual or a Toyota dealership can confirm the standard final drive ratio for your specific model (gasoline or hybrid).

Towing vs MPG impact

The final drive ratio has a significant impact on both towing capability and fuel economy. A numerically lower axle ratio (e.g., 3.177) means the engine will run at lower RPMs at a given road speed. This generally translates to:

• Better Fuel Economy: Less engine revolutions per mile result in less fuel consumed.
• Reduced Towing Capacity: The engine has to work harder to multiply torque to the wheels, making it less ideal for heavy loads.

A numerically higher axle ratio (e.g., the higher ratios in the hybrid's front/rear arrangement, designed for optimal blending of power) means the engine (or motors) will run at higher RPMs at a given road speed. This generally results in:

• Improved Towing/Acceleration: More engine revolutions per mile provide greater torque multiplication to the wheels, enhancing pulling power and acceleration.
• Lower Fuel Economy: The engine is working harder, using more fuel to maintain speed.

For the 2019 RAV4, Toyota has selected ratios that offer a balanced approach, suitable for its primary role as a compact SUV. The gasoline models are designed for everyday driving with adequate towing capability for light loads, while the hybrid models prioritize fuel efficiency and seamless power delivery.

Common issues

Unlike heavy-duty trucks that frequently encounter differential issues due to extreme loads, the 2019 Toyota RAV4 generally has a very reliable drivetrain. Common issues with differentials (like ring and pinion whine, carrier bearing failure, or limited-slip clutch wear) are less prevalent in vehicles like the RAV4 that are not typically subjected to heavy towing or off-road abuse.

However, like any mechanical component, issues can arise. Symptoms of potential differential problems could include:

• Whining or howling noise: Often indicates wear in the ring and pinion gears or bearings.
• Clunking or popping sounds: Could suggest worn universal joints (U-joints) in the driveshaft, worn CV joints, or issues within the differential itself (though less common for a RAV4).
• Vibrations: May point to driveshaft imbalance or worn differential components.

Regular maintenance, including checking and replacing differential fluid (though often considered "lifetime" in many modern vehicles, it's good practice to inspect), can help ensure longevity. Consult your owner's manual for specific maintenance schedules.

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