2022 Subaru Crosstrek — Transmission & Axle Gear Ratios

Transmission gear ratios

Below are the internal gear ratios for each transmission offered on the 2022 Subaru Crosstrek. CVTs do not have fixed gears; their ratio coverage (low–high) and reverse are listed.

6-speed manual (Base, Premium — 2.0L FB20)

Lineartronic CVT (TR580) — 2.0L FB20 (Base, Premium)

Note: In manual mode this unit simulates 7 steps, but these are programmed targets within the continuous range—not fixed gears.

Lineartronic CVT (High-Torque, TR690 family) — 2.5L FB25 (Sport, Limited)

Note: In manual mode this unit simulates 8 steps; again these are software shift points within the CVT’s continuous range.

Available axle ratios

The Crosstrek uses Subaru’s AWD with a front differential integral to the transaxle and an R160 rear differential. Final drive (axle) ratios vary by transmission/engine.

Notes:

• Subaru labels often show tooth counts (e.g., 37:9) rather than a decimal ratio; divide ring by pinion for the ratio.
• Front and rear final-drive ratios are matched from the factory; do not mix ratios.

How to identify your axle ratio

• Rear differential tag/sticker: Subaru does not use GM-style RPO codes. Instead, look for a small sticker or metal stamp on the rear differential housing. You’ll often see the tooth-count (e.g., 39:10 = 3.90, 37:9 = 4.11, 37:10 = 3.70). Clean the housing to reveal it; a mirror helps.
• Transmission/axle code label: A paper/aluminum label on the transaxle bellhousing lists the transmission code (e.g., TR580). Cross-referencing that code in a Subaru parts catalog will indicate the paired final-drive ratio.
• VIN/parts catalog lookup: A dealer or online Subaru EPC can decode your VIN to the exact transmission and differential ratio based on trim (Base/Premium/Sport/Limited), engine (2.0 vs 2.5), and transmission (6MT vs CVT).
• Service history: Replacement differentials should have a matching ratio tag. If the diff has been swapped, verify the tag or count driveshaft vs wheel rotations on jack stands to confirm.

Towing vs MPG impact

• Numerically lower axle ratio (e.g., 3.70): Lowers engine RPM at a given road speed, improving highway fuel economy and reducing cabin noise. This is used with the torquier 2.5L CVT trims (Sport/Limited) to keep cruising RPM down.
• Numerically higher axle ratio (e.g., 4.11): Multiplies torque more at the wheels, improving launch and low-speed drivability—helpful when loaded or on grades. The 6-speed manual Crosstrek uses 4.11 for snappier response.
• Middle ground (3.90): Balances drivability and economy for the 2.0L CVT.

Regardless of ratio, the 2022 Crosstrek’s tow rating is modest (up to 1,500 lb in the U.S.). If you tow near the limit frequently, prioritize the higher (numerically) axle ratio and use the transmission’s manual mode on CVT models to keep RPM in the engine’s torque band on climbs.

Common issues

The Crosstrek driveline is generally robust. A few items to watch:

• Differential whine: Rare, but can appear after fluid neglect or if mismatched tire sizes stress the AWD. A steady pitch that changes with road speed (not engine RPM) often points to ring-and-pinion or bearing wear. Fresh Subaru-approved 75W-90 gear oil and proper tire matching help longevity.
• Prop shaft carrier bearing noise: The two-piece driveshaft’s center support can develop a low growl at higher mileage. Look for slop in the rubber isolator and check U-joints.
• CVT behavior: Not a gearset issue, but owners may notice a flare or shudder if fluid is degraded. Follow severe-service intervals when towing or in hot climates; ensure cooler lines are dry and free of seepage.

Maintenance tips:

• Change front/rear differential oil on schedule (more often for towing/off-road). Use the correct GL-5 spec.
• Keep all four tires closely matched in brand/model/tread depth to minimize AWD strain.
• If replacing any differential, verify the axle ratio tag matches front and rear before driving.

Find a driveline shop on Repairius.