Parts for your 2020 Subaru Impreza-Exterior bulbs

2020 Subaru Impreza exterior bulbs: what they do and how to look after them

Exterior bulbs are absolutely relevant on the 2020 Subaru Impreza. Subaru’s 2020 Impreza Owner’s Manual, the Subaru Technical Information System (service procedures), and the Subaru Genuine Parts Catalogue for MY20 Impreza confirm the car uses a mix of conventional replaceable bulbs and sealed LED units across hatch and sedan models. Lower and mid grades typically use replaceable halogen bulbs for headlights and fogs, while higher grades can feature sealed LED headlights and LED high-mount stop lamps that aren’t user-serviceable.

They’re there for visibility and compliance: seeing the road, being seen by others, and signalling intention. That covers headlights, daytime running lamps, front and rear indicators, brake and tail lamps, reverse lamps, number plate lights and side repeaters. Keeping them all healthy isn’t just smart—it’s required under local ADR/NZTA lighting rules.

As part of regular servicing, a quick lighting check is an easy win. A monthly walk‑around with the lights on (low beam, high beam, indicators, hazards, brakes held, reverse selected with the handbrake on and someone assisting) will pick up early failures and dimming. Halogens gradually lose brightness, so replacing in pairs helps maintain even light output.

• Common fitments on non-LED trims include halogen headlight bulbs and wedge or bayonet bulbs for parkers, indicators, tail, and number plate lights. Many higher trims use sealed LED headlamps and an LED high-mount stop lamp.
• For LED units noted as “non-serviceable” in the Owner’s Manual, the complete lamp assembly is replaced if it fails.

Handy tips for bulb replacement at home: use the exact wattage and base type specified in the manual, avoid touching halogen glass with bare fingers, reseat dust caps and gaskets to keep moisture out, and check fuses if a new bulb doesn’t light. After any headlight work, confirm beam aim so you’re not dazzling oncoming traffic.

Access varies: engine‑bay access usually handles headlight bulbs, fog lamps may be easier via the wheel‑arch liner, number plate and boot lamp covers pop off with gentle leverage. If upgrading to LED replacements for non-LED positions, choose CAN‑bus friendly, ADR/NZTA‑compliant lamps to avoid bulb‑out warnings and legal hassles. When in doubt, the VIN‑specific parts listing and the Owner’s Manual (Lighting section) will call out exactly what fits the 2020 Impreza on Aussie and Kiwi roads.

Popular questions

What headlight bulbs fit a 2020 Impreza?
It depends on the trim. Many non-LED models use common halogen types for low and high beam, while higher grades run sealed LED headlamp units. The safest bet is to check the 2020 Impreza Owner’s Manual or a VIN‑based parts lookup to confirm the exact fitment for that specific car.

Can they switch indicator or park bulbs to LED without errors?
Often yes, but it needs CAN‑bus compatible LEDs or the correct load resistors to prevent fast‑flash or warning messages. Make sure any LED upgrade is ADR/NZTA compliant for on‑road use and produces the correct colour and brightness.

How often should bulbs be replaced?
There’s no fixed interval, but halogens dim over time. Replace at first sign of reduced output, appearance of a blackened glass envelope, or outright failure—and ideally in pairs for even brightness. LED assemblies are typically long‑life, if one fails, the whole unit is usually replaced by a workshop.