Parts for your 2020 Subaru Impreza-Headlight bulbs

2020 Subaru Impreza Headlight Bulbs

Headlight bulbs are relevant to most 2020 Subaru Impreza models. According to the 2020 Subaru Impreza Owner’s Manual (Exterior Lights – Replacing Bulbs) and Subaru parts catalogues, many ANZ-market trims use replaceable halogen headlight bulbs—typically H11 for low beam and 9005 (HB3) for high beam. Higher-spec variants fitted with factory LED headlamps use sealed LED modules that aren’t user-serviceable as “bulbs”. If the vehicle has halogen headlights, this page applies.

On halogen-equipped 2020 Imprezas, the headlight bulbs are the workhorses of night-time visibility. The low beam handles daily driving and oncoming traffic, while the high beam throws a longer beam down country roads and motorways. Fresh, correctly aimed bulbs help the driver see hazards earlier and be seen by others—in daylight rain or dusk as much as at night.

There’s no fixed replacement interval for halogen bulbs, they’re wear items and gradually dim with use. As part of regular servicing, it’s smart to check their brightness and beam pattern, and replace them in pairs when one fails or output looks tired. Premium halogen options can lift brightness, but always choose quality, ADR-compliant bulbs and keep the same type left and right for a balanced beam. For models with OEM LED headlamps, the units are designed for long service life, faults are diagnosed and repaired at module or assembly level rather than by swapping a bulb.

DIY bulb changes under the bonnet are straightforward on most halogen trims, but access varies by side. A torch and some patience go a long way. Key tips:

• Confirm bulb types for the exact trim/VIN (commonly H11 low beam, 9005 high beam, per Subaru documentation).
• Replace in pairs to keep colour and brightness even.
• Don’t touch the glass, use gloves to avoid hot spots that shorten life.
• Refit dust caps and seals carefully to keep moisture out.
• After fitting, check headlight aim and operation of low/high, DRL, and indicators.

If upgrading, be mindful of local rules. Plug-in LED conversions in halogen housings can affect beam focus and may not meet ADR/WoF requirements. When in doubt, stick with approved halogen types or consider OEM-spec LED assemblies specific to the trim.

Popular questions about 2020 Subaru Impreza headlight bulbs

What headlight bulb types does a 2020 Subaru Impreza use?
Most halogen-equipped trims use H11 for low beam and 9005 (HB3) for high beam, as noted in the 2020 Owner’s Manual and Subaru parts listings. Higher-spec models with factory LED headlamps don’t have replaceable “bulbs”, they use integrated LED modules.

How often should the bulbs be replaced?
There’s no set kilometre interval. Replace when a bulb fails, output looks dim or yellowed, or the beam pattern degrades. Many owners choose to refresh both low beams every few years for consistent visibility, especially if driving at night often.

Can halogen bulbs be upgraded to LED?
Plug-in LED retrofits in halogen housings can cause glare and may not comply with ADR (AU) or WoF (NZ) inspection standards. If legal compliance and beam quality matter—as they should—use quality ADR-compliant halogen bulbs or consult about OEM LED assemblies matched to the vehicle’s trim.