2015–2019 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 2015 through 2019 — the BS (5th generation), mid-size wagon/crossover. 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 2015–2019 Subaru Outback

• 2015Full redesign: all-new FB25, 3.6R moves to CVT, EyeSight driver-assist available for the first time on Outback
• 2018Facelift: revised front/rear styling, updated Starlink infotainment, standard EyeSight on most trims
• 2019Final year of this generation; last model year covered by the FB-engine oil-consumption settlement window

What size battery does a 2015–2019 Subaru Outback take?

BCI group 35. 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 2015–2019 Subaru Outback need an AGM battery?

The factory battery is a conventional flooded type. AGM is a valid upgrade, but never downgrade from AGM to flooded.

Where is the battery on a 2015–2019 Subaru Outback?

Engine bay, driver side.

Does a 2015–2019 Subaru Outback need the battery registered after replacement?

Standard flooded Group 35 battery. Class-action-covered battery-drain complaints exist for this generation. See commonProblems.