2017 Subaru Wrx Battery Size: A Comprehensive Guide

Subaru Batteries for Sale and Battery Service Syracuse NY
Subaru Batteries for Sale and Battery Service Syracuse NY from www.romanosubaru.com


The 2017 Subaru WRX is a popular sports sedan known for its impressive performance and sleek design. One important aspect of this vehicle that often gets overlooked is its battery size. In this article, we will provide you with all the information you need to know about the battery size of the 2017 Subaru WRX.

Why Battery Size Matters

The battery size of a car is crucial as it determines the amount of power available to start the engine and run various electrical components. A properly sized battery ensures reliable performance and prevents issues such as starting problems and electrical system malfunctions.

Original Equipment Manufacturer (OEM) Battery Size

The 2017 Subaru WRX comes equipped with a Group 35 battery from the factory. This battery has a standard size of 9.3 x 6.8 x 8.9 inches and a cold cranking amp (CCA) rating of 550. It is a maintenance-free battery, meaning it does not require regular maintenance such as adding water.

Aftermarket Battery Options

If you are looking to replace the original battery of your 2017 Subaru WRX, you have various aftermarket options to choose from. Many reputable battery manufacturers offer batteries with different sizes and specifications to fit your specific needs.

When selecting an aftermarket battery, it is crucial to consider factors such as size, CCA rating, reserve capacity, and warranty. Opting for a battery that matches or exceeds the OEM specifications ensures optimal performance and longevity.

How to Choose the Right Battery

Choosing the right battery for your 2017 Subaru WRX involves considering several factors. Firstly, you need to ensure that the battery physically fits in the battery tray and has the correct terminal orientation. Measure the dimensions of your original battery and compare them with the dimensions of the replacement battery to ensure a proper fit.

Secondly, consider the CCA rating of the battery. CCA refers to the number of amps a battery can deliver for 30 seconds at 0 degrees Fahrenheit while maintaining a voltage of at least 7.2 volts. Higher CCA ratings are beneficial, especially in colder climates, as they provide better cold-starting performance.

Additionally, check the reserve capacity of the battery. Reserve capacity indicates how long a fully charged battery can run essential electrical systems if the alternator fails. A higher reserve capacity ensures a longer period of operation without charging.

Battery Maintenance Tips

To ensure the longevity and optimal performance of your 2017 Subaru WRX battery, follow these maintenance tips:

1. Keep the battery terminals clean and free from corrosion. Use a wire brush and battery terminal cleaner to remove any buildup.

2. Inspect the battery regularly for any signs of damage or leaks. If you notice any issues, replace the battery promptly.

3. Avoid draining the battery excessively by turning off unnecessary electrical components when the engine is not running.

4. If your vehicle will be parked for an extended period, consider using a battery tender or disconnecting the negative terminal to prevent battery drain.

5. Extreme temperatures can affect battery performance. If possible, park your vehicle in a shaded area during hot weather and use a block heater in cold weather.


Understanding the battery size of your 2017 Subaru WRX is essential for maintaining its performance and reliability. Whether you opt for the OEM battery or choose an aftermarket replacement, make sure it meets the necessary specifications. By following proper battery maintenance practices, you can ensure a long-lasting and trouble-free driving experience with your Subaru WRX.