What Type of Battery is in a Subaru WRX?

Most Subaru WRXs came from the factory with a flooded lead-acid battery...at least every one we've ever seen. With these batteries having finite lifespans and Subaru WRX owners tending to hold onto these hot hatchbacks, the time will come, where the battery will eventually need to be replaced. The good news is, Subaru WRX owners don't have to keep using a flooded lead-acid battery. You can use a sealed, AGM OPTIMA battery, that can last up to three times as long as a flooded lead-acid battery!

Nearly every Subaru WRX on the road uses a Group 35 battery, which OPTIMA offers in either a YELLOWTOP or REDTOP. So which one is right for your WRX? It depends on how you use it. If your WRX is a daily driver that has remained unchanged from how the factory built it, then a Group 35 REDTOP will do a great job.

If you've made significant electrical upgrades to your vehicle, including aftermarket car alarms or stereo systems, then a Group 35 OPTIMA YELLOWTOP is a more appropriate choice. That also includes any Subaru WRX that doesn't see regular use and sits for extended periods of time.

If your Subaru WRX is only a weekend fun car, it's a good idea to keep your battery connected to a quality battery maintenance device whenever your car is not in use. Maintaining proper voltage in a battery will not only help maximize battery performance, it will help maximize battery lifespan! We're so confident this is true, we'll add an additional year to the free replacement warranty coverage on an OPTIMA battery you buy from us, if you buy an OPTIMA Digital 1200 battery charger at the same time.