2017 Subaru Crosstrek Transmission & Axle Gear Ratios

Transmission gear ratios

The 2017 Subaru Crosstrek was offered with two transmission options: a 5-speed manual transmission and a Lineartronic Continuously Variable Transmission (CVT).

5-Speed Manual Transmission

Lineartronic CVT

Available axle ratios

The 2017 Subaru Crosstrek offered different axle ratios depending on the transmission and trim level.

How to identify your axle ratio

Unlike many trucks and SUVs, Subaru vehicles, including the 2017 Crosstrek, typically do not have a separate RPO sticker on the door jamb or an axle tag with a distinct axle code. The axle ratio is usually tied directly to the transmission type and is consistent across all trims for a given transmission.

To confirm your specific vehicle's configuration, your best bet is to consult your owner's manual or the vehicle's original window sticker. A Subaru dealership can also provide this information based on your VIN.

Towing vs MPG impact

The axle ratio plays a significant role in determining a vehicle's balance between towing capability and fuel economy. Generally, a numerically lower axle ratio (e.g., 3.700) means the engine will run at lower RPMs at a given road speed. This typically translates to better fuel economy due to reduced engine revolutions and less fuel consumed. However, it also means less mechanical advantage for accelerating or pulling heavy loads.

Conversely, a numerically higher axle ratio (e.g., 4.444) allows the engine to run at higher RPMs for a given road speed. This provides greater torque multiplication to the wheels, improving acceleration and making the vehicle more capable of towing heavy loads or navigating challenging terrain. The trade-off, however, is generally lower fuel economy as the engine works harder (higher RPMs) to maintain the same speed.

For the 2017 Subaru Crosstrek, the 5-speed manual transmission with its 4.444 final drive ratio would offer a slightly livelier feel and potentially better low-end pull compared to the CVT with its 3.700 ratio. However, the CVT's wider ratio spread and lower final drive ratio contribute to its superior fuel economy ratings.

Common issues

While the Subaru Crosstrek is generally known for its reliability, specific driveline components can experience wear over time. Unlike some heavy-duty trucks, precise "ring & pinion whine" or "carrier bearing" issues are not widely reported as common widespread problems for the Crosstrek due to its lighter duty application. However, any vehicle's differential components can wear with high mileage or lack of proper maintenance.

One area that sometimes sees attention in all-wheel-drive vehicles with limited-slip differentials (though less common to fail catastrophically in the Crosstrek's viscous coupling system) is clutch wear within such units if equipped. Always ensure your all-wheel-drive system is functioning correctly, especially if you notice any unusual binding or noises during turns.

Regular differential fluid changes (if applicable to your vehicle's specific differential type and maintenance schedule) are crucial for the longevity of these components.

Find a driveline shop on Repairius.