
What is the 2021 Hyundai Sonata Oil Type and Capacity?
published on January 22, 2023 by Searchforparts.com
There are four available engine types for the 2021 Hyundai Sonata. The first is the 1.8L 4-cylinder [2] Turbo engine. It requires 0W-20 motor oil. The 2.0L 4-cyl [J] variable fuel engine needs 0W-16 oil and has a capacity of 4.5 quarts with a filter. In addition, a 2.5L 4-cyl [A] engine that is not a turbo needs 0W-20 oil and has an oil capacity of 5.5 quarts with a filter. Finally, if you own a 2021 Hyundai Sonata 2.5L 4-cyl [R] Turbo engine, the oil requirement is 0W-30 for all temperatures. It has an oil capacity of 6.6 quarts with a filter.
The oil type required for your 2021 Hyundai Sonata is synthetic oil. You could use a conventional, but the manufacturer recommends using synthetic oil. Using synthetic oil will guarantee maximum output from the engine. You will have a longer time for an oil change, more additives added to oil for a cleaner engine, and you do not need to worry about carbon deposits. Not sure about your engine size? You can use your VIN number and using online apps, resources, and tutorials, you can identify your engine code and/or size with the VIN. People tell us they have good results using this method. Another method is calling the dealership and asking, but the VIN method might be quicker (the last time we called a dealership service department, we were on hold for a while).
Get the best synthetic on the market for your Sonata! Keep the engine running great for many years avoiding costly repairs and engine breakdown. Our oil is tough and tested! Made in USA.

100% synthetic 0w-20 oil!
For the 1.8 and 2.5 (not turbo) engine!

100% synthetic 0w-16 oil!
For the 2.0L engine!

100% synthetic 0w-30 oil!
For the 2.5L Turbo engine!
What Will Happen If I Put in the Wrong Oil In My 2021 Hyundai Sonata?
You must understand that not all oil is suitable for your 2021 Hyundai Sonata. When you pour the wrong oil into your vehicle, it comes with some symptoms that could be dangerous to your engine.
When you have the wrong oil in the vehicle, it comes with some symptoms which are obvious to notice. Some of the symptoms may include the following.
- Burning smell
Pouring the wrong oil into the vehicle means you have the wrong viscosity, which means your car may need to perform better in some weather conditions. When you have motor oil with lower density, your vehicle is prone to break down during extremely hot weather conditions.
In this case, your engine will build up a lot of heat due to increased friction in moving parts. The oil will be unable to lubricate moving parts in the engine, which leads to the burning smell that will come from the engine.
- Delayed starting during extremely cold conditions
Like high-viscosity oil does not perform well during hot conditions, low-viscosity does not perform well in colder conditions. When the temperature is cold, the low-viscosity oil becomes thicker, making it difficult for the oil to circulate through the engine. When this happens, it could hinder the vehicle’s ignition and the engine’s general performance.
- Oil leaks
You may notice oil beneath your vehicle when you have the wrong oil in the engine. It is a result of a difference in the oil flow rate, which makes it possible for oil to pass through some opening that it is not usually meant to. Manufacturers build engines to handle oil with a particle flow rate; you should expect a leak when you have a different engine type.
- Bad fuel consumption
If you use a higher oil than that recommended by the manufacturer, it could lead to increased fuel consumption. Thicker oil will lead to an increase in the resistance of the engine’s parts. The more resistance, the more power is needed, which means an increased fuel consumption to meet the required power.
- Engine noise
Using the wrong oil for your engine can increase the resistance and cause increased friction in moving parts which could be noisy. If the oil is too thick, it will cause the parts to struggle more, causing the noise. Also, when the oil is too thin, it will be unable to lubricate the moving parts properly, causing increased friction which will cause noise.
Does the 2021 Hyundai Sonata Have an Oil Consumption Issue?
There have been reported complaints about high oil consumption in the Hyundai Sonata due to defects in its engine design. Affected models have been recalled and fixed recently, but you should pay close attention to your vehicle if it consumes too much oil. You can do this by checking its oil level regularly. In our personal experience from another vehicle, using a high-quality synthetic significantly reduces the amount consumed.
We recommend having your vehicle inspected by a professional mechanic to diagnose it properly. Apart from the oil consumption problem, the car remains excellent and reliable. It offers a wide variety of comfort and safety features to improve the driving experience.
What Is The Recommended Motor Oil For The 2021 Hyundai Sonata?
Amsoil motor oil products provide the best lubricating services for your Hyundai engine. With their wide range of products, you can easily find your vehicle’s recommended type of oil.
A good thing about Amsoil is they test their products numerous times to ensure that only the best products get to you. All the necessary additives are added to give the exact type of lubrication that the engine parts of your vehicle need.
A Few More Words
Motor oil needs careful consideration before buying one for your vehicle. Buying the wrong type could be detrimental to your 2021 Hyundai Sonata; this is why you need to consider the type of motor oil that the manufacturer recommends for the vehicle and its capacity. If you need to access the manual, you can visit the link below! Thank you for visiting our site.
https://owners.hyundaiusa.com/us/en/resources/manuals-warranties.html