Why doesn’t my WRX battery stay charged?

A battery that won't hold a charge is almost as good as dead. The battery might be old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop in for a free battery check at your favorite Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my old WRX battery?

We recycle it, taking care of both your car and the Earth.

How much do DieHard batteries cost for your Subaru WRX?

You can find affordable WRX 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’s battery post?

If you notice white, crusty stuff around the battery terminals of your WRX, it's likely corrosion. A chemical reaction between battery acid and the air can create a white, powdery substance that builds up over time on the terminals. This buildup can interfere with the electrical connection between the battery and your WRX’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I clean a corroded WRX battery terminal?

You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your WRX owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.

Where can I purchase WRX batteries near me?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install WRX batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

2018 Subaru WRX Car Batteries

Get a New Subaru Battery

Get a Battery for Your Subaru WRX

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2018 Subaru WRX today and schedule a quick installation at Firestone Complete Auto Care.

Shop Batteries

The Right Battery Size for a 2018 Subaru WRX

Researching battery replacements for your Subaru WRX? Use the following chart to find information on Subaru WRX battery size and cold cranking amps.

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

Schedule an Appointment

Buy the Right Battery for Your Subaru WRX

Your WRX doesn't have an expiration date, but its battery does. Generally, car batteries last from three to five years. You want to replace your 2018 Subaru WRX battery before it fails and leaves you stranded. Look out for symptoms of a faulty car battery. A lagging starter, an illuminated battery or check engine light, bloated battery case, corroded battery terminals, or dim headlights can all signal that your battery is on its last leg.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. With best-in-class tools we can tell you how much "life" is left in your battery. Visit us for a complimentary battery check and, if needed, get your Subaru WRX a replacement battery. Car batteries are only one of our many strong suits. Our technicians are well-acquainted with Subaru’s service specs for WRX battery cold cranking amps and reserve capacity. Get help figuring out the battery size that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Why Choose a DieHard Battery for Your WRX?

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 even some of the toughest conditions. DieHard batteries shatter expectations and house the latest technology to fuel the growing power needs of modern vehicles Don't call a DieHard battery ordinary. It's an extraordinary battery. Buy a DieHard battery for your Subaru WRX and get behind the wheel with confidence. Why? Because performance will be there when you need it most. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your WRX’s New Battery Last

Got a new car battery installed in your 2018 Subaru WRX? Good thinking! You can give your new battery a head start with proper care and attention. flipping the dome lights and headlights off when exiting the car, cutting back on unnecessary short trips, keeping your battery posts clean, and not playing the radio or using other electronics when the engine is turned off.

Answers to Your WRX Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a WRX-specific battery question, stop by your nearest store. Our technicians have the answers.

Why doesn’t my WRX battery stay charged? A battery that won't hold a charge is almost as good as dead. The battery might be old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop in for a free battery check at your favorite Firestone Complete Auto Care to learn more about the state of your battery.
What do you do with my old WRX battery? We recycle it, taking care of both your car and the Earth.
How much do DieHard batteries cost for your Subaru WRX? You can find affordable WRX 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’s battery post? If you notice white, crusty stuff around the battery terminals of your WRX, it's likely corrosion. A chemical reaction between battery acid and the air can create a white, powdery substance that builds up over time on the terminals. This buildup can interfere with the electrical connection between the battery and your WRX’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
How do I clean a corroded WRX battery terminal? You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your WRX owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.
Where can I purchase WRX batteries near me? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install WRX batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.