Mazda CX-9 Oil Type & Capacity
GarageDex's oil-spec data shows the Mazda CX-9 takes 5W-30 engine oil, about 5.1 qt with a filter change, on 2016-2023 models. Older ones take a different grade - 2007-2015 models use 5W-20 (5.5 qt) - so check your year in the table below.
Oil by model year
| Model years | Oil type | Capacity | Buy |
|---|---|---|---|
| 2016-2023 | 5W-30 | 5.1 qt | Shop 5W-30 |
| 2007-2015 | 5W-20 | 5.5 qt | Shop 5W-20 |
Capacity is with a filter change and can vary by engine - open your exact year below for the per-engine figures and our sources. Shop links go to Amazon, and we may earn a commission at no extra cost to you.
Every CX-9 year
Frequently asked
What kind of oil does a Mazda CX-9 take?
GarageDex's oil-spec data shows the Mazda CX-9 takes 5W-30 engine oil, about 5.1 qt with a filter change, on 2016-2023 models. Older ones take a different grade - 2007-2015 models use 5W-20 (5.5 qt) - so check your year in the table below.
How many quarts of oil does a Mazda CX-9 take?
About 5.1 qt with a filter change on 2016-2023 models, and 5.5 qt on 2007-2015 models. Capacity varies by engine, so check your exact year for the per-engine figure - and finish on the dipstick rather than pouring in the full amount.
Does the oil type change by year on the Mazda CX-9?
Yes. We record 2 different factory specs across the years we cover - 2016-2023: 5W-30; 2007-2015: 5W-20. Use the table above and confirm against your owner's manual.
Sources. The oil grade and capacity for 17 of 17 model years is checked against a cited source, most often cararac - Mazda CX-9, Car Specs - Mazda CX-9 oil capacity and AMSOIL lookup guide - 2023 Mazda CX-9, 2.5L 4-cyl turbo. Each year page lists its own sources.
Last verified 2026-06-21. Maintained by Matan B., who runs GarageDex. How we verify.