2018 Hyundai Sonata Oil Type & Capacity
The 2018 Hyundai Sonata oil type depends on the engine: the Eco takes 5W-30 (4.75 quarts qt with filter); the Hybrid Limited takes 5W-20 (4.33 quarts qt with filter); the Hybrid SE takes 5W-20 (4.33 quarts qt with filter); the Limited takes 5W-20 (5.07 quarts qt with filter); the Limited 2.0T takes 5W-30 (5.07 quarts qt with filter); the Plug-In Hybrid takes 5W-20 (4.33 quarts qt with filter); the Plug-In Hybrid Limited takes 5W-20 (4.33 quarts qt with filter); the SE takes 5W-20 (5.07 quarts qt with filter); the SEL takes 5W-20 (5.07 quarts qt with filter); the Sport takes 5W-20 (5.07 quarts qt with filter); the Sport 2.0T takes 5W-30 (5.07 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Eco: 5W-30, 4.75 quarts with filter
- Hybrid Limited: 5W-20, 4.33 quarts with filter
- Hybrid SE: 5W-20, 4.33 quarts with filter
- Limited: 5W-20, 5.07 quarts with filter
- Limited 2.0T: 5W-30, 5.07 quarts with filter
- Plug-In Hybrid: 5W-20, 4.33 quarts with filter
- Plug-In Hybrid Limited: 5W-20, 4.33 quarts with filter
- SE: 5W-20, 5.07 quarts with filter
- SEL: 5W-20, 5.07 quarts with filter
- Sport: 5W-20, 5.07 quarts with filter
- Sport 2.0T: 5W-30, 5.07 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Eco — 1.6L Eng | ACEA A5 or above.SAE 5W-30, SAE 5W-40 | 4.75 QTS. | — | 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). |
| Hybrid Limited — 2.0L Eng,Gas/Electric | ACEA A5 or above.SAE 5W-20, SAE 5W-30 | 4.33 QTS. | — | For better fuel economy, it is recommended to use the engine oil viscosity grade SAE 5W-20 (API SM/ILSAC GF-4). |
| Hybrid SE — 2.0L Eng,Gas/Electric | ACEA A5 or above.SAE 5W-20, SAE 5W-30 | 4.33 QTS. | — | For better fuel economy, it is recommended to use the engine oil viscosity grade SAE 5W-20 (API SM/ILSAC GF-4). |
| Limited — 2.4L Eng | ACEA A5 or above.SAE 5W-20, SAE 5W-30 | 5.07 QTS. | — | For better fuel economy, it is recommended to use the engine oil of a viscosity grade SAE 5W-20 (API Service SM / ILSAC GF-4). |
| Limited 2.0T — 2.0L Eng,Gas | ACEA A5 or above.SAE 5W-30, SAE 5W-40 | 5.07 QTS. | — | 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). |
| Plug-In Hybrid — 2.0L Eng,Gas/Electric | ACEA A5 or above.SAE 5W-20, SAE 5W-30 | 4.33 QTS. | — | For better fuel economy, it is recommended to use the engine oil viscosity grade SAE 5W-20 (API SM/ILSAC GF-4). |
| Plug-In Hybrid Limited — 2.0L Eng,Gas/Electric | ACEA A5 or above.SAE 5W-20, SAE 5W-30 | 4.33 QTS. | — | For better fuel economy, it is recommended to use the engine oil viscosity grade SAE 5W-20 (API SM/ILSAC GF-4). |
| SE — 2.4L Eng | ACEA A5 or above.SAE 5W-20, SAE 5W-30 | 5.07 QTS. | — | For better fuel economy, it is recommended to use the engine oil of a viscosity grade SAE 5W-20 (API Service SM / ILSAC GF-4). |
| SEL — 2.4L Eng | ACEA A5 or above.SAE 5W-20, SAE 5W-30 | 5.07 QTS. | — | For better fuel economy, it is recommended to use the engine oil of a viscosity grade SAE 5W-20 (API Service SM / ILSAC GF-4). |
| Sport — 2.4L Eng | ACEA A5 or above.SAE 5W-20, SAE 5W-30 | 5.07 QTS. | — | For better fuel economy, it is recommended to use the engine oil of a viscosity grade SAE 5W-20 (API Service SM / ILSAC GF-4). |
| Sport 2.0T — 2.0L Eng,Gas | ACEA A5 or above.SAE 5W-30, SAE 5W-40 | 5.07 QTS. | — | 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). |
More factory specs & repair guides for your Sonata
🛞 2018 Hyundai Sonata Tire Size & Pressure →🌧️ 2018 Hyundai Sonata Wiper Blade Sizes →💡 2018 Hyundai Sonata Light Bulb Sizes →📖 2018 Hyundai Sonata Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
6.55 quarts (6.19 L) — 50/50 mixture of Ethylene Glycol Antifreeze and water. The engine coolant should be compatible with aluminum engine parts.
Frequently asked questions
What type of oil does a 2018 Hyundai Sonata take?
It depends on the engine: Eco uses 5W-30; Hybrid Limited uses 5W-20; Hybrid SE uses 5W-20; Limited uses 5W-20; Limited 2.0T uses 5W-30; Plug-In Hybrid uses 5W-20; Plug-In Hybrid Limited uses 5W-20; SE uses 5W-20; SEL uses 5W-20; Sport uses 5W-20; Sport 2.0T uses 5W-30.
What is the oil capacity of a 2018 Hyundai Sonata?
Oil capacity depends on the engine: Eco holds 4.75 quarts with filter; Hybrid Limited holds 4.33 quarts with filter; Hybrid SE holds 4.33 quarts with filter; Limited holds 5.07 quarts with filter; Limited 2.0T holds 5.07 quarts with filter; Plug-In Hybrid holds 4.33 quarts with filter; Plug-In Hybrid Limited holds 4.33 quarts with filter; SE holds 5.07 quarts with filter; SEL holds 5.07 quarts with filter; Sport holds 5.07 quarts with filter; Sport 2.0T holds 5.07 quarts with filter.
How often should I change the oil in my 2018 Hyundai Sonata?
Most 2018 Hyundai Sonata owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Hyundai recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2018 Hyundai Sonata?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2018 Hyundai Sonata. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.