The 2008 Subaru Impreza typically uses a Group 35, 12-volt automotive battery. This Group size is the standard replacement choice for most US-spec Impreza models.
Overview of the usual battery size
For most 2008 Impreza models sold in the United States, the standard replacement battery is Group 35. It provides the usual 12 volts and sufficient capacity for everyday driving. Depending on climate and electrical demands, some owners may opt for higher cold-cranking amps (CCA) or longer reserve capacity, but Group 35 remains the default reference for this year and model.
How to verify the exact battery size for your car
The following steps help you confirm the precise group size for your specific vehicle, since production runs and regional specs can vary.
- Check the owner's manual or the maintenance section for the recommended battery group size and specifications.
- Inspect the current battery label or the case stamping; many batteries display the group size (for example, "Group 35") along with CCA and reserve capacity.
- Use the vehicle identification number (VIN) to query Subaru's official parts catalog or ask a dealership for the exact OEM battery size for your trim and year.
- Measure the battery dimensions and compare them with standard Group 35 dimensions and terminal layout if you're purchasing an aftermarket replacement.
Once you have the correct group size, match it with the replacement's group size, CCA, and capacity. If you drive in cold climates or do lots of short trips, consider a battery with higher CCA or a longer reserve capacity for reliability.
Additional considerations when replacing
Battery compatibility isn’t only about size. Ensure the replacement’s CCA and reserve capacity meet or exceed the original specifications, and verify warranty terms with the seller. If you’re unsure, a Subaru dealer or a trusted auto parts retailer can confirm the exact requirement for your vehicle using the VIN.
Summary
In most cases, the 2008 Subaru Impreza uses a Group 35, 12-volt battery. Always verify with the owner's manual, the current battery label, or a dealer using your VIN to ensure you get the correct size for your specific trim and climate.