Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Toyota Mirai Fluid Capacities
OEM fluid capacity chart from the factory service manual for the 2021-2024 (2021-2024).
Quick Answer
Automatic Transmission Fluid
5.90 QTS. (5.58 L) — TOYOTA Genuine Automatic Transmission Fluid Type WS Note: Using Fluid other than TOYOTA Genuine Automatic Transmission WS will damage the Transmission. The fluid capacity is the quantity of reference.
Brake Fluid
— SAE J1703 or FMVSS No. 116 DOT 3 SAE J1704 or FMVSS No. 116 DOT 4
Engine Coolant
4.20 QTS. (3.97 L) — TOYOTA Super Long Life Coolant Note: DO NOT use plain water alone. The fluid capacity is the quantity of reference.
Notes
- →Using Fluid other than TOYOTA Genuine Automatic Transmission WS will damage the Transmission. The fluid capacity is the quantity of reference.
- →DO NOT use water or other kinds of coolant as they will cause damage. The capacity is a reference quantity.
- →DO NOT use plain water alone. The fluid capacity is the quantity of reference.
- →The model code is indicated on the manufacturer’s plate or label. This is the maximum possible fill amount. The actual fuel amount achieved at hydrogen stations may be different due to station capacity or station settings.
This vehicle's factory manual
2021 Toyota Mirai: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Related for Your 2021 Toyota Mirai
Maintenance Specs
Frequently Asked Questions
- What are the fluid capacities for a 2021 Toyota Mirai?
- The 2021 Toyota Mirai fluid capacities are: Automatic Transmission Fluid: 5.90 QTS. (5.58 L) — TOYOTA Genuine Automatic Transmission Fluid Type WS Note: Using Fluid other than TOYOTA Genuine Automatic Transmission WS will damage the Transmission. The fluid capacity is the quantity of reference., Brake Fluid: — SAE J1703 or FMVSS No. 116 DOT 3 SAE J1704 or FMVSS No. 116 DOT 4, Engine Coolant: 4.20 QTS. (3.97 L) — TOYOTA Super Long Life Coolant Note: DO NOT use plain water alone. The fluid capacity is the quantity of reference..
- How much engine oil does a 2021 Toyota Mirai take?
- Refer to the factory service manual for the exact engine oil capacity.