The 2016 Mazda6 with the 2.5 L engine uses about 4.8 quarts (4.5 liters) of engine oil when you replace the oil filter; if you’re only changing the oil and not the filter, it’s about 4.4 quarts (4.2 liters).
When performing an oil change, use the recommended synthetic oil (typically 0W-20) and fill to the dipstick’s full mark, then recheck after the engine warms up. Always consult the owner’s manual for your exact trim and regional specifications, as there can be small variations.
Capacity figures
With oil filter replacement
Approximately 4.8 quarts (4.5 liters).
Without oil filter replacement
Approximately 4.4 quarts (4.2 liters).
Oil type and maintenance tips
For the 2.5 L SkyActiv-G engine, Mazda generally recommends synthetic 0W-20 oil. Use oil that meets the appropriate standards (often ILSAC GF-5 / API SN or newer) and follow the service intervals in your manual. Typical oil-change intervals with synthetic oil are around 7,500 miles (12,000 km) under normal driving, though severe conditions can require more frequent changes.
How to check and fill
Park on level ground and turn off the engine. Let it sit for a few minutes, then pull the dipstick, wipe it clean, reinsert, and check the level. If the oil is low, add small amounts at a time, recheck, and avoid overfilling. After adding oil, run the engine briefly and recheck again to ensure the level is within the recommended range on the dipstick.
Additional notes
Variations can exist by market, trim, or driving conditions. If you’re unsure, refer to the specific owner’s manual for your vehicle or consult a Mazda service professional to confirm the exact capacity and recommended oil type for your car’s configuration.
Summary
In short, the 2016 Mazda6 2.5 L engine takes about 4.8 quarts (4.5 liters) with a new oil filter, or about 4.4 quarts (4.2 liters) if the filter is not replaced. Use synthetic 0W-20 oil and follow the dipstick guidance to ensure proper fill. Always verify with your owner’s manual for your exact vehicle specifications.