--- title: "Subaru Outback Battery Size and CCA" description: "How the Subaru Outback battery specification changed from 2010 to 2025, compared generation by generation. The Subaru Outback uses a BCI group 35 (Q85) battery. Fitment, replacement notes, and what to check before you buy." url: "https://whichcarparts.com/cars/subaru/outback/battery" updated: "2026-08-21" --- # Subaru Outback Battery Size (BCI Group and CCA) The specification is not the same across every year we cover, the table below shows exactly where it changes. ## Has the Subaru Outback battery specification changed by year? | Model years | Group size | CCA | Type | Location | | --- | --- | --- | --- | --- | | [2020-2025](https://whichcarparts.com/cars/subaru/outback/2020-2025/battery) | Group 35 (Q85) | N/A | EFB | Engine bay, driver side | | [2015-2019](https://whichcarparts.com/cars/subaru/outback/2015-2019/battery) | Group 35 | N/A | FLOODED | Engine bay, driver side | | [2010-2014](https://whichcarparts.com/cars/subaru/outback/2010-2014/battery) | Group 35 | N/A | FLOODED | Engine bay, driver side | ## Full specifications by generation The battery on a Subaru Outback is set by its generation, not its model year, so each generation has one page carrying the complete figures, part numbers and fitment notes for every year it covers. - [2020-2025 Subaru Outback Battery](https://whichcarparts.com/cars/subaru/outback/2020-2025/battery) - [2015-2019 Subaru Outback Battery](https://whichcarparts.com/cars/subaru/outback/2015-2019/battery) - [2010-2014 Subaru Outback Battery](https://whichcarparts.com/cars/subaru/outback/2010-2014/battery) ## Subaru Outback battery: common questions ### What size battery does a Subaru Outback take? BCI group 35 (Q85). Group size is a physical dimension and terminal-position standard, so a battery from a different group may not clamp down or may put the terminals on the wrong side. ### Does the Subaru Outback need an AGM battery? The factory battery is an EFB type. Match the type when you replace it. ### Where is the battery on a Subaru Outback? Engine bay, driver side. ### Does a Subaru Outback need the battery registered after replacement? Factory battery is a Panasonic Enhanced Flooded Battery (EFB) in a Group 35 case, needed for the standard auto start-stop system. An AGM Group 35 replacement (e.g. Optima Yellowtop, Odyssey, DieHard Platinum AGM) is commonly used and supports start-stop. ## Sources - [Wikipedia, Subaru FB engine (FB25D direct-injection, 2020 Outback/Legacy)](https://en.wikipedia.org/wiki/Subaru_FB_engine) - [AMSOIL lookup, 2022 Outback 2.4L FA24 turbo oil spec/capacity](https://www.amsoil.com/lookup/auto-and-light-truck/2022/subaru/outback/2-4l-4-cyl-engine-code-a-fa24-a-turbo/) - [NHTSA, 19V-664 brake pedal mounting bracket recall (WUL-97)](https://static.nhtsa.gov/odi/rcl/2019/RCLRPT-19V664-6082.PDF) - [NHTSA, 24V-227 front passenger airbag sensor recall](https://static.nhtsa.gov/odi/rcl/2024/RCLRPT-24V227-7296.PDF) - [Out Motorsports, 2022 Outback Wilderness review (260 hp FA24F introduction)](https://www.outmotorsports.com/2021/09/2022-subaru-outback-wilderness-review-off-road/) - [classaction.org, Subaru lawsuit: 2019-2025 vehicles, parasitic battery drain (Taylor v. Subaru)](https://www.classaction.org/news/subaru-lawsuit-says-2019-2025-vehicles-plagued-by-electrical-system-defect-causing-parasitic-battery-drain) - [AutoZone, 2023 Outback wiper blade fitment (26/18/16)](https://www.autozone.com/ignition-tune-up-and-routine-maintenance/wiper-blade-windshield/subaru/outback/2023) - [Edmunds, 2023 Subaru Outback review (XT/Wilderness turbo trim lineup)](https://www.edmunds.com/subaru/outback/2023/) ## Find your exact Outback - [2025](https://whichcarparts.com/cars/subaru/outback/2025) - [2024](https://whichcarparts.com/cars/subaru/outback/2024) - [2023](https://whichcarparts.com/cars/subaru/outback/2023) - [2022](https://whichcarparts.com/cars/subaru/outback/2022) - [2021](https://whichcarparts.com/cars/subaru/outback/2021) - [2020](https://whichcarparts.com/cars/subaru/outback/2020) - [2019](https://whichcarparts.com/cars/subaru/outback/2019) - [2018](https://whichcarparts.com/cars/subaru/outback/2018) - [2017](https://whichcarparts.com/cars/subaru/outback/2017) - [2016](https://whichcarparts.com/cars/subaru/outback/2016) - [2015](https://whichcarparts.com/cars/subaru/outback/2015) - [2014](https://whichcarparts.com/cars/subaru/outback/2014) - [2013](https://whichcarparts.com/cars/subaru/outback/2013) - [2012](https://whichcarparts.com/cars/subaru/outback/2012) - [2011](https://whichcarparts.com/cars/subaru/outback/2011) - [2010](https://whichcarparts.com/cars/subaru/outback/2010) More Subaru Outback guides: - [Oil & filter](https://whichcarparts.com/cars/subaru/outback/oil) - [Tires & wheels](https://whichcarparts.com/cars/subaru/outback/tires) - [Wiper blades](https://whichcarparts.com/cars/subaru/outback/wipers) - [Air & cabin filters](https://whichcarparts.com/cars/subaru/outback/filters) - [Bulbs](https://whichcarparts.com/cars/subaru/outback/bulbs) - [Brakes](https://whichcarparts.com/cars/subaru/outback/brakes) - [Fluids](https://whichcarparts.com/cars/subaru/outback/fluids) - [Service schedule](https://whichcarparts.com/cars/subaru/outback/service-schedule) - [Problems & reliability](https://whichcarparts.com/cars/subaru/outback/common-problems) - [Oil light reset](https://whichcarparts.com/cars/subaru/outback/oil-reset) - [Key fob battery](https://whichcarparts.com/cars/subaru/outback/key-fob-battery) - [Specs](https://whichcarparts.com/cars/subaru/outback/specs) Specifications vary with engine option, production date, and market.