Why won’t my MX-5 Miata battery hold a charge?

A battery that won't hold a charge is almost as good as dead. The battery might be old. Or, you’ve been leaving the doors slightly open and the cabin light at 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 dead MX-5 Miata battery?

We’ll recycle your car battery for you!

How much will replacing my Mazda MX-5 Miata’s battery cost if I get a DieHard battery?

You can find affordable MX-5 Miata 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.

What is the average lifespan of a car battery?

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.

What is the white, crusty stuff around my MX-5 Miata’s battery post?

The white, flaky stuff that can build up around your MX-5 Miata’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 MX-5 Miata, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

What do I do about corrosion on my MX-5 Miata 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 MX-5 Miata owner’s manual for instructions on how to do so.

Where can I find a battery for my MX-5 Miata?

Your local Firestone Complete Auto Care sells and installs MX-5 Miata 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 Mazda MX-5 Miata

Get a New Mazda Battery

Get a Battery for Your Mazda MX-5 Miata

Don't let a failing battery slow you down. Shop replacement batteries for 2021 Mazda MX-5 Miatas today and schedule a quick installation at Firestone Complete Auto Care.

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2021 Mazda MX-5 Miata Battery Replacement & Size

Not sure what battery to get for your Mazda MX-5 Miata? Use the following chart to find information on Mazda MX-5 Miata battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
51R-2	L4/2.0L	Replacement 36 months	Performance months	500

BATTERIES
L4/2.0L - Battery: 51R-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 500

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Buy the Right Battery for Your Mazda MX-5 Miata

Your MX-5 Miata doesn't have an expiration date, but its battery does. On average, auto batteries last anywhere from three to five years. You want to replace your 2021 Mazda MX-5 Miata battery before it fails and leaves you stranded. Pay attention to clues that your battery is on its way out. A slow engine crank, an illuminated check engine light or battery signal, bloated battery case, corroded battery terminals, or weak lights may all indicate 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. Drop in for a free battery check and, if needed, a replacement battery for your 2021 Mazda MX-5 Miata. Car batteries are one of our many specialties! Our technicians are well-acquainted with Mazda’s service specs for MX-5 Miata battery cold cranking amps and reserve capacity. Get help identifying the type and size of battery that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Why Choose a DieHard Battery for Your MX-5 Miata?

Your Mazda MX-5 Miata deserves the best, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard MX-5 Miata batteries surpass expectations using state-of-the-art advancements to meet the growing power requirements of new vehicles. They're no ordinary battery, they're extraordinary. Go with a DieHard battery for your MX-5 Miata and get behind the wheel with confidence. Why? Because your battery will perform when you need it. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New Mazda MX-5 Miata Battery

Have you recently had a fresh battery installed in your Mazda MX-5 Miata? Good thinking! Give your new car battery the best start with proper care. ensuring all the lights are turned off before you leave the car, cutting back on unnecessary short trips, keeping your battery posts clean, and not using electronics such as the radio and power outlets when the engine is off.

Commonly Asked MX-5 Miata 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 Mazda MX-5 Miata battery, pay us a visit. Our expert techs have the answers you need.

Why won’t my MX-5 Miata battery hold a charge? A battery that won't hold a charge is almost as good as dead. The battery might be old. Or, you’ve been leaving the doors slightly open and the cabin light at 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 dead MX-5 Miata battery? We’ll recycle your car battery for you!
How much will replacing my Mazda MX-5 Miata’s battery cost if I get a DieHard battery? You can find affordable MX-5 Miata 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.
What is the average lifespan of a car battery? 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.
What is the white, crusty stuff around my MX-5 Miata’s battery post? The white, flaky stuff that can build up around your MX-5 Miata’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 MX-5 Miata, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.
What do I do about corrosion on my MX-5 Miata 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 MX-5 Miata owner’s manual for instructions on how to do so.
Where can I find a battery for my MX-5 Miata? Your local Firestone Complete Auto Care sells and installs MX-5 Miata batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.