Why doesn’t my WRX battery stay charged?

A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop by for a free battery test at your local Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my old WRX battery?

We’ll recycle your car battery for you!

How much do DieHard batteries cost for your Subaru WRX?

Subaru WRX batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.

How long is a car battery good for?

You can usually get three to five years out of your car battery. However, battery type, how well you maintain your battery, and your driving habits can all affect your battery’s lifespan.

Why is there white, flaky stuff around my WRX’s battery post?

The white, flaky stuff that can build up around your WRX’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your WRX, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

How do I remove corrosion from my WRX car battery?

To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your WRX owner’s manual for instructions on how to do so.

Who carries WRX batteries near me?

Your local Firestone Complete Auto Care sells and installs WRX batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

Car Batteries for 2021 Subaru WRX

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Get a Battery for Your Subaru WRX

Don’t let a dead battery stop you. Shop replacement car batteries for your 2021 Subaru WRX at Firestone Complete Auto Care.

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Battery Size & Replacement for 2021 Subaru WRX

Need more info about Subaru WRX batteries? Use this chart to find the right battery size and CCAs for your Subaru WRX.

Battery	Engine	Warranty		Cold Cranking Amps
26R-3	H4/2.0L	Replacement 24 months	Performance months	575
35-2	H4/2.0L	Replacement 36 months	Performance months	640
35-AGM	H4/2.0L	Replacement 36 months	Performance months	650

BATTERIES
H4/2.0L - Battery: 26R-3 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 575
H4/2.0L - Battery: 35-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 640
H4/2.0L - Battery: 35-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 650

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Shopping for Subaru WRX Car Batteries

Your WRX doesn't have an expiration date, but its battery does. On average, auto batteries last anywhere from three to five years. Don’t get stranded by your WRX’s car battery. Replace it regularly instead! Watch for signs that your current battery is getting too old or too weak. A lagging starter, an illuminated check engine light or battery signal, bloated battery case, corroded battery terminals, or weak lights can all signal that your battery is waving goodbye.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. Our equipment can see how much charge is left in your battery. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 2021 Subaru WRX running! Automotive batteries are just one of our many areas of expertise. Our expert technicians understand Subaru service recommendations for WRX car batteries’ reserve capacities and cold cranking amps. Get help identifying the type and size of battery that's best for your WRX, and schedule a weekday or weekend battery replacement service for your car.

Firestone Has DieHard Batteries for WRXs

We know what’s best for your Subaru WRX, which is why we only carry top-of-the-line replacement parts and batteries. Your vehicle needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries go above and beyond using the latest innovative technology to satisfy the growing power demands of new vehicles. Don't call a DieHard battery ordinary. It's an extraordinary battery. Go with a DieHard battery for your WRX and have the peace of mind that your battery will perform when you need it. That's the kind of battery we deliver.

After Buying 2021 Subaru WRX Battery

Did you recently have a new 2021 Subaru WRX car battery installed? Good thinking! Now, help it last longer and stay charged by caring for it from the get-go. ensuring all the lights are turned off before you leave the car, limiting short trips, cleaning your battery posts, and avoiding radio and electronic component use when the engine is off.

Commonly Asked WRX Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a battery question that's unique to your Subaru WRX battery, visit your nearest store. Our technicians are happy to help.

Why doesn’t my WRX battery stay charged? A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop by for a free battery test at your local Firestone Complete Auto Care to learn more about the state of your battery.
What do you do with my old WRX battery? We’ll recycle your car battery for you!
How much do DieHard batteries cost for your Subaru WRX? Subaru WRX batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.
How long is a car battery good for? You can usually get three to five years out of your car battery. However, battery type, how well you maintain your battery, and your driving habits can all affect your battery’s lifespan.
Why is there white, flaky stuff around my WRX’s battery post? The white, flaky stuff that can build up around your WRX’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your WRX, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.
How do I remove corrosion from my WRX car battery? To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your WRX owner’s manual for instructions on how to do so.
Who carries WRX batteries near me? Your local Firestone Complete Auto Care sells and installs WRX batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.