What battery size fits a 2017 Subaru Forester?
Do not assume Group 25 is the correct battery for every 2017 Forester. Subaru’s parts catalog shows different genuine battery listings for 2017 Foresters, and replacement catalogues also list more than one BCI group. The right part depends on the exact vehicle configuration; the model year alone is not enough to confirm fitment.
How do I check the exact Forester battery?
Use the VIN in Subaru’s parts catalogue or ask a Subaru dealer to confirm the correct part number. Before buying an aftermarket replacement, match its group, dimensions, terminal orientation and required starting rating to the OEM specification and the vehicle’s manual. If those references disagree, do not force a different-size battery into the tray.
Sources: Subaru Parts: 2017 Forester Vehicle Battery, Part 82110AE011; Subaru Parts: 2017 Forester Vehicle Battery, Part 82110AA012; AutoZone: 2017 Subaru Forester Battery Fitment
