How much coolant does a Scion iQ hold?

The Scion iQ cooling system holds 6-10 quarts total depending on the engine. A drain-and-fill replaces about 50-60% of the coolant. For a complete flush, you'll need the full capacity amount.

What type of transmission fluid does a Scion iQ use?

The Scion iQ transmission fluid type depends on whether it's an automatic or manual transmission and the model year. Always use the manufacturer-specified fluid — check your owner's manual for the exact ATF or manual transmission fluid required.

Does a Scion iQ have power steering fluid?

2015+ Scion iQ models with electric power steering don't use power steering fluid. Older models with hydraulic power steering use ATF or manufacturer-specific fluid — check your owner's manual.

What brake fluid does a Scion iQ use?

Most Scion iQ models use DOT 3 or DOT 4 brake fluid. DOT 4 has a higher boiling point and is preferred for performance driving. Never use DOT 5 (silicone-based) in a system designed for DOT 3/4.

🧪Fluid Capacities

Scion iQ Fluid Capacities

All fluid capacities for your Scion iQ: engine oil, coolant, transmission fluid, brake fluid, power steering, and more.

Quick Answer

The Scion iQ requires multiple fluids maintained at specific levels. Engine oil, coolant, transmission fluid, brake fluid, and power steering fluid all have different capacities depending on your engine and model year.

2012-2015

Engine OilVaries by engine — check owner's manual (typically 4-8+ quarts)

Coolant (total system)6.0 - 10.0 quarts

Transmission Fluid3.5 - 4.0 quarts (drain & fill) / 7-9 quarts (total)

Brake FluidDOT 3 or DOT 4 — ~1 quart for full flush

Power Steering FluidElectric power steering — no fluid needed

Windshield Washer~1 gallon

Notes

→Never mix different types of coolant — flush completely when changing brands
→Many newer models use electric power steering — no power steering fluid required
→Transmission fluid should be checked with the engine running and at operating temperature
→Brake fluid absorbs moisture over time — replace every 2-3 years regardless of mileage

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Frequently Asked Questions

How much coolant does a Scion iQ hold?: The Scion iQ cooling system holds 6-10 quarts total depending on the engine. A drain-and-fill replaces about 50-60% of the coolant. For a complete flush, you'll need the full capacity amount.
What type of transmission fluid does a Scion iQ use?: The Scion iQ transmission fluid type depends on whether it's an automatic or manual transmission and the model year. Always use the manufacturer-specified fluid — check your owner's manual for the exact ATF or manual transmission fluid required.
Does a Scion iQ have power steering fluid?: 2015+ Scion iQ models with electric power steering don't use power steering fluid. Older models with hydraulic power steering use ATF or manufacturer-specific fluid — check your owner's manual.
What brake fluid does a Scion iQ use?: Most Scion iQ models use DOT 3 or DOT 4 brake fluid. DOT 4 has a higher boiling point and is preferred for performance driving. Never use DOT 5 (silicone-based) in a system designed for DOT 3/4.

Scion iQ Repair Guides

→Scion iQ Coolant Flush →Scion iQ Transmission Fluid Change →Scion iQ Brake Fluid Flush

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