Quick answer: the 2020–2023 Mazda CX-9 2.5L turbo takes 5.1 qt (4.8 L) of SAE 5W-30 with a filter change.
| Engine | Oil capacity (with filter) | Oil type |
|---|---|---|
| 2.5L SKYACTIV-G Turbo | 5.1 qt (4.8 L) | 5W-30 |
One 5-quart jug is not quite enough. Buy one extra quart.
Oil capacity by year
| Model year | Oil capacity | Oil type |
|---|---|---|
| 2020 | 5.1 qt (4.8 L) | 5W-30 |
| 2021 | 5.1 qt (4.8 L) | 5W-30 |
| 2022 | 5.1 qt (4.8 L) | 5W-30 |
| 2023 | 5.1 qt (4.8 L) | 5W-30 |
We read the Capacities and Recommended Oil pages of every manual listed under Sources. Capacities without a filter change are about 0.2 L (0.2–0.3 qt) lower.
Recommended oil type
Mazda specifies SAE 5W-30 (API “Certified For Gasoline Engines”) for the CX-9 in the U.S., Canada and Puerto Rico.
How to reset the oil life on the 2020–2023 Mazda CX-9
See also: Oil life reset by brand.
Mazda shows oil change reminders through the Maintenance Monitor. After the oil change, open the Maintenance Monitor in Mazda Connect (Applications or Information, depending on the system), select Oil Change and reset it. The exact menu path is in the Mazda Connect owner’s manual for your car.
Oil change tips
- A 5-quart jug plus one quart.
- The capacity is approximate. After refilling, run the engine briefly, turn it off, wait a few minutes and check that the level is between the marks on the dipstick before adding more.
Sources and how we checked
All capacities and oil grades on this page come from Mazda’s online owner’s manuals for the U.S. market, published on mazdausa.com (Specifications → Capacities, and Engine Oil → Recommended Oil):
- 2020 Mazda CX-9 owner’s manual: Capacities
- 2021 Mazda CX-9 owner’s manual: Capacities
- 2022 Mazda CX-9 owner’s manual: Capacities
- 2023 Mazda CX-9 owner’s manual: Capacities
If your owner’s manual shows something different, follow your manual and tell us.
Last checked: October 26, 2026.
FAQ
How much oil does a Mazda CX-9 take?
5.1 qt (4.8 L) with a filter change.
What oil does a CX-9 use?
SAE 5W-30.
Can I use 0W-20 in a CX-9?
The U.S. manuals specify 5W-30.
Is it the same every year?
Yes, 2020–2023.
How do I reset the oil change reminder?
Reset the Oil Change item in the Maintenance Monitor.
Newer three-row Mazda: CX-90. See all Mazda oil capacities.