Car Batteries for 2015 Subaru WRX STI

Get a New Subaru Battery

Get a New Subaru WRX STI Battery

Don’t let a dead battery stop you. Shop replacement car batteries for your 2015 Subaru WRX STI at Firestone Complete Auto Care.

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Battery Size & Replacement for 2015 Subaru WRX STI

Researching battery replacements for your Subaru WRX STI? Use this chart to find the right battery size and CCAs for your Subaru WRX STI.

Battery Engine Warranty Cold Cranking Amps
35-1 H4/2.5L Replacement 24 months Performance months 500
35-2 H4/2.5L Replacement 36 months Performance months 640
35-AGM H4/2.5L Replacement 36 months Performance months 650
BATTERIES

H4/2.5L

- Battery: 35-1

- Warranty: Replacement 24 months, Performance months

- Cold Cranking Amps: 500

H4/2.5L

- Battery: 35-2

- Warranty: Replacement 36 months, Performance months

- Cold Cranking Amps: 640

H4/2.5L

- Battery: 35-AGM

- Warranty: Replacement 36 months, Performance months

- Cold Cranking Amps: 650

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Buy the Right Battery for Your Subaru WRX STI

Your WRX STI doesn't have an expiration date, but its battery does. On average, auto batteries last anywhere from three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Subaru WRX STI stranded. Watch for signs that your current battery is getting too old or too weak. A sluggish engine start, a blinking battery or check engine light, bloated battery case, corroded battery posts, and subpar electrical performance can all be signs that your battery is waving goodbye.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. With computerized testing we can see how much charge is left in your battery. Visit us for a complimentary battery check and, if needed, get your Subaru WRX STI a replacement battery. Car batteries are one of our many specialties! Our technicians are well-acquainted with Subaru’s service specs for WRX STI battery cold cranking amps and reserve capacity. Get help identifying the type and size of battery that fits your car perfectly, and schedule an appointment today for a quick car battery replacement.

Firestone Has DieHard Batteries for  WRX STIs

We only want what’s best for your Subaru WRX STI, which is why we carry just that. You need a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard WRX STI batteries surpass expectations using state-of-the-art advancements to fuel the growing power needs of modern vehicles Don't call a DieHard battery ordinary. It's an extraordinary battery. Go with a DieHard battery for your WRX STI and get behind the wheel with confidence. Why? Because performance will be there when you need it most. That's the kind of battery we deliver.

Caring for a New Subaru WRX STI Battery

Got a new car battery installed in your 2015 Subaru WRX STI? Great job! You can give your new battery a head start with proper care and attention. Give your new battery a hand by limiting short trips, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.

Commonly Asked WRX STI Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a battery question that's unique to your Subaru WRX STI battery, stop by your nearest store. Our technicians have the answers.

  • Why won’t my WRX STI battery hold a charge? A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop in for a free battery check at your local Firestone Complete Auto Care and learn more about your battery's charge.
  • What do you do with my old WRX STI battery? We recycle it, taking care of both your car and the Earth.
  • How much will replacing my Subaru WRX STI’s battery cost if I get a DieHard battery? You can find affordable WRX STI batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.
  • How long can I expect my car battery to last? Car battery lifespan varies depending on a few factors, including driving conditions, accessories,  how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.
  • Why is there white, flaky stuff around my WRX STI’s battery post? A chemical reaction between battery acid and the air can cause a white, crusty buildup to form on the terminals of your WRX STI car battery. This buildup — known as corrosion — can impede the flow of electricity and cause a range of issues, from poor performance to premature battery failure.
  • What do I do about corrosion on my WRX STI car battery? Regularly inspecting and cleaning your battery terminals will help keep your WRX STI’s electrical system running smoothly. Before cleaning, reference your owner’s manual for instructions on how to disconnect the battery cables. Once the cables have been disconnected, gently clean the terminals with a mixture of water and baking soda, a wire brush, and a rag.
  •  Who carries WRX STI batteries near me? You can shop for WRX STI batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.