How much oil does a 2021 Hyundai Elantra need?

The oil capacity of the 2021 Hyundai Elantra is approximately 3.8 to 4.2 liters (specifically depending on the engine model. The commonly - seen 1.6 - liter Gamma MPI engine in the Malaysian market usually requires 3.8 liters). It is recommended to use 5W - 20 or 5W - 30 full - synthetic oil of API SN grade or higher. When changing the oil, the oil filter should be replaced together to ensure the best lubrication effect. In the tropical climate of Malaysia, 5W - 30 viscosity oil can better adapt to high - temperature environments and provide stable oil - film protection. It is advisable to change the oil every 5,000 to 10,000 kilometers or every 6 months (depending on driving conditions). For those who drive aggressively or frequently take short trips, the oil - change interval can be shortened. It's worth noting that both over - filling and under - filling of oil can affect engine performance. After adding oil, you need to check the oil level with the dipstick to make sure it's between the MIN and MAX marks. If you change the oil by yourself, you must properly dispose of the used oil to avoid environmental pollution. Hyundai's official service centers use Hyundai Genuine oil to ensure compatibility, but car owners can also choose other well - known brand oils that meet the specifications.