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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.
2018 Hyundai SonataOil Type & Capacity
OEM spec from the factory service manual for the Eco variant.
Quick Answer
Oil Type
$ACEA A5 or above.SAE 5W-30, SAE 5W-40
Capacity (w/ Filter)
4.75 QTS.
4.49 L
Variant
Eco
Note: For better fuel economy, it is recommended to use the engine oil of a viscosity grade SAE 5W-30 (API SM / ILSAC GF-4 / ACEA A5 or above).
This vehicle's factory manual
2018 Hyundai Sonata: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Sister site: See this spec on WhatTypeOfOil.com — our quick oil type & capacity lookup for every vehicle.
What You'll Need
Related for Your 2018 Hyundai Sonata
Frequently Asked Questions
- What type of oil does a 2018 Hyundai Sonata take?
- The 2018 Hyundai Sonata requires ACEA A5 or above.SAE 5W-30, SAE 5W-40. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Eco configuration.
- How much oil does a 2018 Hyundai Sonata need?
- The 2018 Hyundai Sonata takes 4.75 QTS. (4.49 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2018 Hyundai Sonata?
- Yes — synthetic oil that meets the ACEA A5 or above.SAE 5W-30, SAE 5W-40 specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 2018 Hyundai Sonata?
- Using oil that does not meet the ACEA A5 or above.SAE 5W-30, SAE 5W-40 specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.