The 2016 Subaru Outback uses a standard 12-volt automotive battery. The most common OEM replacement size is Group 35, providing roughly 550–650 cold-cranking amps (CCA) and about 60–70 amp-hours (Ah). Always verify the exact group size on the battery label or in the owner's manual, since engine options and trim levels can influence the specification.
The Outback for that model year offered two main engines—a 2.5-liter four-cylinder and a 3.6-liter six-cylinder—and both rely on a conventional lead-acid unit rather than a start-stop AGM battery. For the precise fit, it’s best to check the current battery’s label or consult Subaru’s parts catalog or your VIN-specific parts lookup before purchasing a replacement.
How to verify the correct size and replacement tips
To ensure you buy the right battery, start with the vehicle’s documentation and the existing battery plate. The Group Size is typically stamped on the battery’s top or side, and the owner's manual lists the recommended specification. If you’re unsure, an automotive parts retailer can pull the exact Group Size using your VIN or year/model, and can guide you to a compatible replacement with adequate CCA and Ah for your climate.
Maintenance and safety considerations
When replacing, wear eye protection and disconnect the negative battery cable first to minimize sparks. Check for corrosion on terminals and clean as needed, and ensure the new battery is securely mounted to prevent vibration damage.
Summary
The 2016 Subaru Outback generally uses a 12-volt battery in Group Size 35, with typical ratings around 550–650 CCA and 60–70 Ah. Always confirm the exact size via the battery label, owner's manual, or Subaru parts catalog using your VIN, and replace it with a battery that meets or exceeds OEM specifications for reliable starting and electrical performance.