Cooling system > Capacity* > Gasoline engine
6.6 qt
6.2 L
Applies to: Gasoline engine
Source: Toyota 2021 Prius Owner's Manual (OM47E09U), page 670
Owner’s manual specs
2021 Toyota Prius Specs: Fluids & Maintenance Schedule
Figures for the 2021 Toyota Prius, copied from Toyota’s own owner’s manual. Every one links to the manual page it came from.
From the manufacturer’s manuals. Every figure here is copied from the manufacturer's own manual, with a link to the page it came from. Where a manual is unclear or contradicts itself, we leave the figure out.
Fluids & capacities
Cooling system > Capacity* > Power control unit
1.5 qt
1.4 L
Applies to: Power control unit
Source: Toyota 2021 Prius Owner's Manual (OM47E09U), page 670
Cooling system > Coolant type
Use either of the following: • “Toyota Super Long Life Coolant” • Similar high-quality ethylene glycol- based non-silicate, non-amine, non- nitrite, and non-borate coolant with long-life hybrid organic acid technology Do not use plain water alone.
Source: Toyota 2021 Prius Owner's Manual (OM47E09U), page 670
Engine oil selection > Oil grade
API SN/RC multigrade engine oil
Source: Toyota 2021 Prius Owner's Manual (OM47E09U), page 668
Engine oil selection > Recommended viscosity
SAE 0W-16
Source: Toyota 2021 Prius Owner's Manual (OM47E09U), page 668
Transmission > Fluid capacity*
3.8 qt
3.6 L
Source: Toyota 2021 Prius Owner's Manual (OM47E09U), page 671
Transmission > Fluid type
Toyota Genuine ATF WS
Source: Toyota 2021 Prius Owner's Manual (OM47E09U), page 671
Maintenance schedule
Normal service schedule
Use this for ordinary driving.
| Service | When |
|---|---|
| Replace cabin air filter Source: Toyota 2021 Prius Warranty and Maintenance Guide, page 47 | Every 30,000 mi or 36 months |
| Replace engine air filter Source: Toyota 2021 Prius Warranty and Maintenance Guide, page 47 | Every 30,000 mi or 36 months |
| Replace engine oil and oil filter Source: Toyota 2021 Prius Warranty and Maintenance Guide, page 43 | 5,000 mi, 20,000 mi, 30,000 mi, 40,000 mi, 50,000 mi, 60,000 mi, 70,000 mi, 80,000 mi, 90,000 mi, 100,000 mi, 110,000 mi, 120,000 mi |
Severe service schedule
Use this if you tow, idle a lot, drive short trips in the cold, or run in dust.
| Service | When |
|---|---|
| Inspect engine air filter Applies to: Driving on dirt roads or dusty roads Source: Toyota 2021 Prius Warranty and Maintenance Guide, page 40 | 5,000 mi, 15,000 mi, 20,000 mi, 25,000 mi, 35,000 mi, 40,000 mi, 45,000 mi, 50,000 mi, 55,000 mi, 65,000 mi, 70,000 mi, 75,000 mi, 80,000 mi, 85,000 mi, 95,000 mi, 100,000 mi, 105,000 mi, 110,000 mi, 115,000 mi |
| Replace engine oil and oil filter Applies to: Driving on dirt roads or dusty roads Source: Toyota 2021 Prius Warranty and Maintenance Guide, page 41 | 5,000 mi, 15,000 mi, 25,000 mi, 35,000 mi, 45,000 mi, 55,000 mi, 65,000 mi, 75,000 mi, 85,000 mi, 95,000 mi, 105,000 mi, 115,000 mi |
| Replace engine oil and oil filter Applies to: Driving while towing, using a car-top carrier, or heavy vehicle loading Source: Toyota 2021 Prius Warranty and Maintenance Guide, page 40 | 5,000 mi, 15,000 mi, 25,000 mi, 35,000 mi, 45,000 mi, 55,000 mi, 65,000 mi, 75,000 mi, 85,000 mi, 95,000 mi, 105,000 mi, 115,000 mi |
| Replace engine oil and oil filter Applies to: Extensive idling and/or low speed driving for a long distance such as police, taxi or door-to-door delivery use Source: Toyota 2021 Prius Warranty and Maintenance Guide, page 41 | 5,000 mi, 15,000 mi, 25,000 mi, 35,000 mi, 45,000 mi, 55,000 mi, 65,000 mi, 75,000 mi, 85,000 mi, 95,000 mi, 105,000 mi, 115,000 mi |
| Replace engine oil and oil filter Applies to: Repeated trips of less than five miles in temperatures below 32°F / 0°C Source: Toyota 2021 Prius Warranty and Maintenance Guide, page 41 | 5,000 mi, 15,000 mi, 25,000 mi, 35,000 mi, 45,000 mi, 55,000 mi, 65,000 mi, 75,000 mi, 85,000 mi, 95,000 mi, 105,000 mi, 115,000 mi |
| Replace rear differential oil (AWD) Applies to: Driving while towing, using a car-top carrier, or heavy vehicle loading Source: Toyota 2021 Prius Warranty and Maintenance Guide, page 55 | Every 60,000 mi or 72 months |
Not on this page
- Oil life & reset procedures: The manual gives different answers by configuration, so we've left them out.
- Fuse box locations & fuse chart: The manual gives different answers by configuration, so we've left them out.