2020–2025 Subaru Outback Battery Size (BCI Group and CCA)

Which Subaru Outback model years does this cover?

These battery specifications apply to every Subaru Outback built from 2020 through 2025 — the BT (6th generation), mid-size wagon/crossover (subaru global platform). Nothing in this specification changes between those model years. Pick your year for the engines it offered, what changed that year, and the problems recorded against it.

What changed during the 2020–2025 Subaru Outback

• 2020Generation launch on the Subaru Global Platform; direct-injected FB25D replaces the port-injected FB25; 3.6R/EZ36 discontinued; EyeSight standard
• 2022Wilderness trim introduced. First Outback to use the turbocharged 2.4L FA24F, plus raised suspension, all-terrain tires, and a full-size spare option
• 2023XT trims (Touring XT, Onyx Edition XT, Limited XT) broaden 2.4T availability beyond Wilderness; minor styling refresh
• 2025Final model year of this generation before the next redesign; largely a carryover year

What size battery does a 2020–2025 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 2020–2025 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 2020–2025 Subaru Outback?

Engine bay, driver side.

Does a 2020–2025 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.