Parts for your 2020 Mazda 3-Oil filter

2020 Mazda 3 oil filter — what it does and when to change it

Referencing technical sources, the 2020 Mazda 3 (BP series) does use an engine oil filter. The 2020 Mazda 3 Owner’s Manual (BP) lists “engine oil and filter replacement” in scheduled maintenance, the Mazda Workshop Manual (Lubrication System) shows a spin‑on oil filter in the system diagram, and Mazda parts catalogues specify a genuine oil filter for the BP‑series (commonly PE01‑14‑302A/1WPE‑14‑302 for Skyactiv‑G engines). So an oil filter is not only relevant — it’s a standard, serviceable part on this model.

On a 2020 Mazda 3, the oil filter’s job is simple but crucial: keep engine oil clean so it can properly lubricate bearings, camshafts, timing chains and the Skyactiv variable valve timing hardware. As the kilometres rack up, tiny bits of carbon, metal and dust end up in the oil. The filter traps that grit so it doesn’t sandblast the engine from the inside. A healthy filter helps maintain stable oil pressure, quieter cold starts and better engine life — the kind of stuff every Mazda 3 owner is keen on.

For Aussie and Kiwi conditions, the practical advice is to replace the oil filter at every scheduled service — typically every 10,000 km or 12 months (whichever comes first), or sooner if the car sees a lot of short trips, dusty roads or hot stop‑start commuting. Use a quality filter that meets Mazda specifications (genuine or reputable equivalent) and the correct low‑viscosity oil (commonly 0W‑20 meeting the latest API spec) for best cold‑start protection and fuel economy.

DIY‑inclined owners can handle an oil and filter change under the bonnet with basic tools. Warm the engine, drain the oil, remove the old spin‑on filter, check the old gasket isn’t stuck to the block, lightly oil the new gasket, then install the new filter hand‑tight plus about three‑quarters of a turn. Refill with the right amount of fresh oil, start the engine, check for leaks and top up to the dipstick mark. Dispose of used oil and the old filter responsibly at a recycling centre.

• Watch for warning signs: oil pressure light, noisy start‑ups, or oil that goes black immediately after a change can suggest an overdue or poor‑quality filter.
• Sticking to a filter‑and‑oil routine helps resale value and keeps the Skyactiv engine feeling crisp for the long haul.

How often should the oil filter be replaced on a 2020 Mazda 3?

Generally, every 10,000 km or 12 months in Australia and New Zealand, aligned with routine servicing. If the car does lots of short trips, dusty gravel runs or heavy city traffic, shorten the interval. Fresh oil plus a new filter each service is the safest bet for engine longevity.

Which oil filter fits the 2020 Mazda 3?

Most BP‑series Mazda 3 petrol engines (Skyactiv‑G 2.0/2.5 and many Skyactiv‑X variants) use a Mazda spin‑on filter commonly referenced as PE01‑14‑302A (also seen as 1WPE‑14‑302). Always confirm by VIN with a parts counter, as regional specs can vary.

Can a home mechanic change the oil filter?

Yes, if they’re comfortable with basic servicing. Use the correct oil, a quality filter, and don’t overtighten — hand‑tight plus about three‑quarters of a turn is typical for spin‑on filters. After starting, check for leaks and verify the oil level on the dipstick. If unsure, a trusted workshop will sort it quickly and stamp the service record.