2020–2025 DN8 (8th generation)
2020–2025 Hyundai Sonata Fluid Types and Capacities
Which transmission fluid, coolant, and brake fluid the 2020–2025 Hyundai Sonata takes, with capacities and the specifications each one has to meet. Transmission: Hyundai/SK ATF SP4 (8-speed automatic, 2.5L/1.6T/2.5T); hybrid uses a 6-speed dual-clutch with its own DCT fluid. Coolant: Hyundai Long Life Coolant (silicate-free); capacity not independently confirmed this session.
Last verified
2020–2025 Hyundai Sonata fluid guide
Check your manual| System | Fluid type & capacity |
|---|---|
| Coolant | Hyundai Long Life Coolant (silicate-free); capacity not independently confirmed this session |
| Transmission | Hyundai/SK ATF SP4 (8-speed automatic, 2.5L/1.6T/2.5T); hybrid uses a 6-speed dual-clutch with its own DCT fluid |
| Brake fluid | DOT 3 brake fluid |
| Power steering | Electric power steering (no fluid) |
Plain washer fluid; no special spec
Which Hyundai Sonata model years does this cover?
These fluids specifications apply to every Hyundai Sonata built from 2020 through 2025 — the DN8 (8th generation), mid-size sedan. Nothing in this specification changes between those model years. Pick your year for the engines it offered, what changed that year, and the problems recorded against it.
What changed during the 2020–2025 Hyundai Sonata
- 2020Generation launch; 2.5L and 1.6T gas engines, plus Hybrid, at launch
- 2021N Line trim introduced with the 2.5T Smartstream engine; 1.6T dropped from most trims
- 2022N Line Night Edition appearance package added; panoramic sunroof newly available
- 2023SEL trim gains a larger touchscreen infotainment system with navigation; Highway Driving Assist added to the driver-assist suite
- 2024Facelift with revised front/rear styling and updated interior tech
2020–2025 Hyundai Sonata fluids: common questions
What transmission fluid does a 2020–2025 Hyundai Sonata take?
- Hyundai/SK ATF SP4 (8-speed automatic, 2.5L/1.6T/2.5T); hybrid uses a 6-speed dual-clutch with its own DCT fluid. Transmission fluid specifications are not interchangeable. Friction modifiers differ between them, and the wrong fluid causes shudder long before it causes failure.
What coolant does a 2020–2025 Hyundai Sonata use?
- Hyundai Long Life Coolant (silicate-free); capacity not independently confirmed this session.
What brake fluid does a 2020–2025 Hyundai Sonata take?
- DOT 3 brake fluid.
Sources
- Wikipedia, Hyundai Smartstream engine family (G1.6T, G1.6T Hybrid, displacement/output data)
- AMSoil lookup, 2022 Sonata 2.5L oil viscosity/capacity
- Costa Oils, 2023 Sonata 2.5L Turbo (N Line) oil guide
- Hyundai Forums, N Line owner's manual 0W-30 vs. 0W-20 cap discussion
- Goodyear, 2024 Sonata factory tire fitments by trim
- Headquarter Hyundai, 2020 Sonata fuel tank capacity and EPA mpg
- US News, 2021 Sonata Limited 1.6T engine specs
- Go-Parts, 2021–2024 Hyundai/Kia 2.5L Smartstream (G4KN) oil dilution/piston-ring notes
