The 2015 Hyundai Sonata with the 2.4-liter engine requires about 5.0 quarts (4.7 liters) of engine oil for a full change, including a new filter.
This article explains the official capacity, the recommended oil grade, and practical tips for checking and maintaining the engine’s oil on Hyundai’s midsize sedan.
Capacity, grade and specifications
Engine details
The 2015 Sonata’s 2.4L engine is typically the Theta II 2.4-liter four-cylinder. For a standard oil change with a new filter, manufacturers publish a capacity of about 5.0 quarts (4.7 liters). The oil capacity is usually listed as 5.0 quarts with the filter; without the filter, it’s slightly less (around 4.5–4.7 quarts). The recommended viscosity is generally 5W-20 for most operating conditions, with 5W-30 acceptable in hotter climates or as specified in the owner’s manual. Oil should meet ILSAC GF-5 or higher (API SN or newer) per Hyundai’s specifications.
- Oil capacity: 5.0 quarts (4.7 liters) with a new filter
- Recommended viscosity: 5W-20 (5W-30 may be used where specified by the manual)
- Oil specification: ILSAC GF-5 or higher (API SN or newer)
Keep these figures handy when planning maintenance. Always verify the exact specification for your vehicle in the owner’s manual or via Hyundai’s service data, as minor revisions by market or VIN can occur.
Maintenance intervals and practical tips
Knowing the capacity is only part of the equation. Correct intervals, oil selection, and filter compatibility are essential for long-term engine health. The following guidance helps you plan oil changes and keep the engine well-lubricated between service visits.
Before you perform or schedule an oil change, consider these key points to ensure you meet Hyundai’s expectations for the 2.4L engine and maintain warranty compatibility.
- Confirm the exact capacity and specification for your vehicle using the owner’s manual or Hyundai official service data; variations can occur by market or revision.
- Use the correct oil and filter: typically 5W-20, with a filter compatible with the 2.4L Theta II engine.
- Rely on the vehicle’s oil life monitor or the recommended interval in the manual to determine when to change oil.
- Dispose of used oil responsibly and reset the oil life monitor if required by your model year.
- Inspect for leaks and ensure the dipstick shows the correct level after refilling.
Adhering to these steps supports reliable lubrication and optimal engine performance between changes.
Summary
The 2015 Hyundai Sonata 2.4L engine takes about 5.0 quarts (4.7 liters) of engine oil with a new filter for a full oil change. Use 5W-20 as the standard viscosity, with 5W-30 acceptable in certain climates or as specified in the manual, and ensure the oil meets ILSAC GF-5 or higher. Always verify your vehicle’s exact requirements in the owner’s manual or with a Hyundai dealer, and follow the recommended maintenance intervals for best results.