2022 Subaru Forester — Transmission & Axle Gear Ratios

Transmission gear ratios

Subaru equips every 2022 Forester with the Lineartronic CVT (TR580). Unlike a conventional stepped automatic, the CVT continuously varies its ratio; Subaru also provides a 7-step “manual mode” with simulated shift points on most trims. Because there are no fixed forward gears, the best way to present the transmission specs is by the effective ratio range.

TR580 Lineartronic CVT (all 2022 Forester trims)

Notes:

• The effective ranges above are typical for the TR580 used with the 2.5L FB25. Subaru does not publish fixed forward gear ratios for the CVT; exact values can vary slightly by calibration and market.
• The final drive (axle) ratio multiplies these internal ratios; see the axle table below for trim-specific final drives.

Available axle ratios

All Forester models use Subaru Symmetrical AWD with matching front and rear final-drive ratios. For 2022, there are two factory axle ratios in North America.

Context:

• The Wilderness trim’s shorter 4.11 final drive boosts wheel torque and crawl performance, contributing to its higher tow rating (up to 3,000 lb) versus 1,500 lb on other trims.
• Front and rear differentials share the same ratio; never mix ratios across axles.

How to identify your axle ratio

• Rear differential tag or stamping (Subaru-specific): Most 2022 Foresters have a small metal tag or etched marking on the rear differential. It may show either the decimal ratio (e.g., 3.700) or the ring-and-pinion tooth count (e.g., 37:10 = 3.70; 37:9 ≈ 4.11). Clean the housing to read it.
• Transmission/differential code label: A white barcode label on the CVT case and ID markings on the diff correspond to a Subaru parts code (TR580-xxxxx). Dealers can translate this to the final drive installed.
• VIN/build data: A Subaru dealer or parts department can run your 17-digit VIN in the Subaru EPC to display the exact final-drive ratio as built. Many online Subaru VIN decoders and parts catalogs will show this as well.
• Window sticker/owner resources: The 2022 Forester Wilderness specifically lists its enhanced towing package and shorter final drive in press materials; other trims default to 3.70.
• Note on GM/Ford/Ram methods: GM-style door-jamb RPO stickers and Ford/Ram axle tags are not used by Subaru, but the concept is similar: look for a diff tag or use VIN/build codes to decode the ratio.

Towing vs MPG impact

• Lower numeric ratio (e.g., 3.70): Better highway fuel economy because engine rpm is lower at a given road speed. Suits daily driving and long commutes.
• Higher numeric ratio (e.g., 4.11 Wilderness): Increases torque multiplication at the wheels for stronger launch, hill climbs, and off‑road work. Expect higher engine rpm at cruise, so fuel economy is typically a bit lower.
• CVT interaction: The TR580’s wide ratio spread lets the engine stay near its torque peak, but the final drive still sets the baseline. That’s why the Wilderness tows more and crawls better even with the same 2.5L engine—it uses the shorter 4.11 final drive plus a factory cooler.
• Practical tip: If you tow frequently or drive on steep, rough roads, the 4.11 is advantageous. If you prioritize MPG and mostly highway miles, the 3.70 is the smart pick.

Common issues (what to watch)

The 2022 Forester platform and TR580 CVT are generally robust, but driveline issues can occur, especially with fluid neglect or severe use.

• Ring-and-pinion whine: A rising-and-falling hum that tracks road speed can indicate wear or improper backlash in the rear differential. Check fluid level/condition (75W‑90) and inspect for water intrusion after deep-water crossings.
• Propeller shaft center support bearing: A worn carrier bearing can cause a droning or vibration that changes with speed, often more noticeable on decel. Inspect the driveshaft u-joints and mount cushions as a set.
• CVT chain/primary pulley whine or belt‑like moan: Under heavy loads (especially on long grades), overheated fluid can lead to noise or shudder. The Wilderness includes a cooler; if you tow with other trims, consider an auxiliary cooler and stick to Subaru CVT fluid intervals.
• Differential seal seepage: After off‑road use, check axle and pinion seals for dampness. Early attention prevents bearing damage.
• Note: The 2022 Forester uses open differentials; clutch‑type limited‑slip wear is not applicable on this model year/market.

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