The 2020 Subaru Impreza uses a standard 12-volt automotive battery. For most trims, the replacement is a Group Size 35 flooded lead-acid battery. Always verify the exact specs on your current battery or in the owner’s manual, as configurations can vary by market or trim.
Battery type and general specs
Understanding the battery installed in your Impreza helps when shopping for a replacement. The vehicle relies on a conventional 12-volt battery with no hybrid or high-voltage pack involved in non-hybrid models. The battery is located in the engine bay and is designed for typical automotive use without the need for an advanced AGM option unless a specific feature set requires it.
- Battery type: 12-volt lead-acid, conventional flooded design (not typically AGM for standard trims)
- Group size: commonly 35 (verify on the current battery label)
- Capacity (Ah): typically in the 48–60 Ah range
- Cold-cranking amps (CCA): generally around 450–600 A
- Notes: always check the battery label or owner’s manual for exact specifications
In short, most 2020 Impreza models use a standard 12V flooded battery with a Group Size 35 designation. Exact values can vary by market or production run, so confirming on the existing battery is the best practice.
Choosing a replacement battery
When selecting a replacement, aim for a battery that matches or exceeds the original specifications, and consider longevity and warranty. AGM batteries are typically reserved for vehicles with stop-start systems or special electrical demands; standard Impreza models usually operate fine with a flooded lead-acid battery, but check your trim’s requirements if you’re unsure.
- Group size: 35 (confirm with the original battery or manual)
- Battery type: flooded lead-acid (most trims); consider AGM only if your model specifies it
- Capacity: 48–60 Ah (or as specified by the original battery)
- CCA: 450–600 A (or higher if the original calls for it)
- Warranty: look for at least 2–4 years of coverage
To ensure proper fit and function, have the replacement tested at a retailer or automotive shop if possible, and keep the receipt and warranty information handy.
Maintenance tips and replacement steps
Routine checks can extend battery life and prevent unexpected failures. Inspect terminals for corrosion, ensure clamps are tight, and replace a failing battery promptly to avoid getting stranded.
- Check for corrosion on terminals and clean as needed
- Ensure terminal clamps are tight and free of corrosion
- Have the battery load-tested if you notice slow cranking or dim lights
- Replace the battery if it’s older than 3–5 years or shows signs of failure
For precise guidance, consult the Subaru owner's manual or a trusted automotive parts professional. They can confirm the exact Group Size (often 35 for the Impreza) and the recommended battery type for your specific vehicle configuration.
Summary
In summary, the 2020 Subaru Impreza typically uses a 12-volt, flooded lead-acid battery in Group Size 35. When replacing, choose a battery with similar or better specifications (48–60 Ah, 450–600 CCA) and verify the exact requirements on your current battery or in the owner’s manual. AGM is generally unnecessary for standard trims, but always verify according to your vehicle’s configuration. Regular maintenance can help extend battery life and reliability.