Front driver-side blade: 26 inches; front passenger-side blade: 17 inches; rear blade: 11 inches.
For the 2018 Forester, these sizes cover the standard front wipers and the rear wiper on models that include one. Always verify by measuring the blades on your car or checking the owner's manual or a trusted fit guide, as some regional trims or aftermarket replacements may differ in fit.
Front wiper blade sizes
The front wipers on the 2018 Forester use two different lengths, one on each side of the windshield, to optimize coverage and clearance.
- Driver's side: 26 inches
- Passenger's side: 17 inches
This front pairing is standard for most 2018 Forester models. If you’re replacing them yourself, ensure the blade adapters match your wiper arms and check the vehicle manual for any trim-specific notes.
Rear wiper blade size
Many 2018 Forester models with a rear window wiper use a compact blade of about 11 inches.
- Rear: 11 inches
Rear wiper sizes can vary slightly by market or trim, so confirm by inspecting the current blade or consulting the manual or retailer’s fit guide.
Additional tips for a precise fit
When replacing blades, verify compatibility with your specific year and trim, and consider the blade type (straight, curved, or multi-clip systems) and connector style (j-hook, pin, or bayonet). If in doubt, bring the old blade or vehicle details to a parts counter for an exact match.
Summary
For a 2018 Subaru Forester, plan on 26" driver-side front blades, 17" passenger-side front blades, and an 11" rear blade if your model has a rear wiper. Always double-check with the owner's manual or a trusted fit guide to account for regional or trimming differences.