2025 Tesla Model Y – Complete Fluid Specifications

Quick reference

Fluid	Type/Spec	Capacity
Engine Oil	Not Applicable	N/A
Coolant	Tesla G-48 (Glycol-based)	Verify in owner's manual
Transmission Fluid	Not Applicable (Single-speed direct drive)	N/A
Transfer Case	Not Applicable (Integrated into drive units)	N/A
Front Differential	Integrated into front drive unit	Verify in owner's manual
Rear Differential	Integrated into rear drive unit	Verify in owner's manual
Brake Fluid	DOT 4	Verify in owner's manual
Power Steering	Not Applicable (Electric Power Steering)	N/A
Washer Fluid	Commercial Washer Fluid	Verify in owner's manual
DEF	Not Applicable	N/A

Engine Oil

The 2025 Tesla Model Y is an all-electric vehicle and does not utilize an internal combustion engine. Therefore, engine oil is not applicable to this vehicle.

Coolant

Tesla vehicles, including the 2025 Model Y, use a specific glycol-based coolant designed for their complex thermal management systems. This system manages battery temperature, power electronics, and cabin climate. It is crucial to use only Tesla-approved coolant, typically branded as Tesla G-48. This is a blue-green colored coolant that is a form of Hybrid Organic Acid Technology (HOAT). Mixing with other coolant types (such as OAT or traditional IAT coolants) can lead to corrosion, degradation of system components, and significant damage. Always refer to your owner's manual for the exact capacity, as this can vary slightly based on specific configurations and whether it's a single or dual-motor variant. Coolant levels should be checked periodically, and any top-offs should be done with the specified Tesla G-48 coolant diluted to a 50/50 mixture with distilled water unless otherwise specified by Tesla.

Transmission Fluid

The 2025 Tesla Model Y utilizes a single-speed direct drive system for its electric motors, not a traditional multi-gear transmission requiring ATF. There is no user-serviceable transmission fluid.

Transfer Case

For all-wheel-drive (AWD) Tesla Model Y vehicles, the "transfer case" function is integrated into the front and rear drive units. These units are self-contained and do not require separate transfer case fluid changes or top-offs. Any internal lubrication is designed to last the lifetime of the component. Refer to your owner's manual or an authorized Tesla service center for any specific service recommendations if concerns arise.

Front Differential

The front differential is integrated into the front drive unit of the 2025 Tesla Model Y (on AWD models). These units are typically sealed for life and do not require routine fluid changes. Any internal lubrication is designed to be maintenance-free under normal operating conditions. Consult your owner's manual or an authorized Tesla service center for any specific service guidelines.

Rear Differential

Similarly, the rear differential is an integral part of the rear drive unit in the 2025 Tesla Model Y. Like the front unit, it is a sealed, "fill-for-life" component and does not require periodic fluid replacement or checking. It is critical not to attempt to drain or fill these units unless specifically instructed by Tesla service documentation, as improper procedures can lead to severe damage and void warranty. Always verify in your owner's manual for the most accurate information or consult an authorized Tesla service center.

Brake Fluid

The 2025 Tesla Model Y requires DOT 4 brake fluid. This is a hygroscopic fluid, meaning it absorbs moisture over time, which reduces its boiling point and can lead to diminished braking performance and corrosion within the brake system. It is generally recommended to replace brake fluid every two years, regardless of mileage, to maintain optimal braking safety and system longevity. Always use a high-quality DOT 4 fluid from a reputable manufacturer. Never use DOT 5 (silicone-based) fluid, as it is incompatible with systems designed for DOT 3, 4, or 5.1 and can cause significant damage to seals and ABS components. Also, avoid mixing different DOT fluid types.

Power Steering Fluid

Electric Power Steering (EPS) systems are standard on the 2025 Tesla Model Y. These systems do not use hydraulic pumps or fluid reservoirs. Therefore, power steering fluid is not applicable to this vehicle.

Washer Fluid

The 2025 Tesla Model Y uses standard commercial windshield washer fluid. It is recommended to use an all-season fluid that offers freeze protection appropriate for your climate to prevent lines and reservoirs from freezing in cold weather. Some premium washer fluids also include bug remover or water repellent additives. Avoid using plain water, especially in freezing temperatures, as it can expand and damage the reservoir or spray nozzles.

Diesel Exhaust Fluid (DEF)

The 2025 Tesla Model Y is an all-electric vehicle and does not have a diesel engine. Therefore, Diesel Exhaust Fluid (DEF) is not applicable.

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