Oil
- Viscosity
- 0W-20
- Oil type
- Full Synthetic
- Capacity (with filter)
- 4.8 qt
- Capacity (without filter)
- 4.4 qt
OEM notes: API SP
2015 Hyundai Sonata Maintenance & Specs
Everything you need to maintain your 2015 Hyundai Sonata — oil specs, maintenance schedule, recalls, and more.
The 2015 Hyundai Sonata takes 0W-20 Full Synthetic with a total capacity of 4.8 quarts (filter included). You’ll need a 17mm socket for the drain plug, torqued to 35 Nm. The OEM oil filter is the Hyundai 26300-35505, with 2 compatible alternatives listed below. Note: this vehicle has 9 active recalls — check the recalls section below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.
Data last verified: April 30, 2026
Oil
0W-20
Full Synthetic
Buy on Amazon →
Capacity
4.8 qt
with filter
Drain plug
17 mm
35 Nm torque
Filter
26300-35505
Hyundai (OEM)
Buy on Amazon →
OEM spec: API SP
Quick DIY Tips for the 2015 Hyundai Sonata
- Torque your drain plug to 35 Nm (26 ft-lbs) to avoid leaks or stripped threads.
- Using the OEM filter (Hyundai 26300-35505) is recommended for warranty compliance.
- Always use 0W-20 Full Synthetic as specified by Hyundai — using the wrong viscosity can void your powertrain warranty.
- Check the maintenance schedule below for your next service interval.
Filter options
Drain bolt & hardware
- Socket size
- 17 mm
- Thread size
- M14x1.5
- Torque spec
- 35 Nm
- Gasket type
- Crush washer
Notes: 8th gen LF (2.4L Theta II / 1.6T I4)
Fluid specifications
Parts & specifications
Spark Plugs
- Type
- Iridium
- Gap
- 0.044
- Quantity
- 4
- Change interval
- 100,000 mi
Battery
- Group size
- 47
- CCA
- 550
Tires
- Size
- 215/55R17
- Front pressure
- 33 PSI
- Rear pressure
- 33 PSI
Air Filter
Cabin Air Filter
Brake Pads
Wiper Blades
Maintenance schedule
Select a mileage interval above to see scheduled maintenance items.
Estimated Current Value
Original MSRP
$30,000
Private Party Value
$6,840 – $7,560
Dealer Retail Value
$7,920 – $9,000
Trade-In Value
$6,120 – $6,840
Depreciation
76%
Estimated values assume average condition and mileage for vehicle age.
Source: estimated
Safety recalls9
Technical Service Bulletins212
Torque specifications
- lug nut
- 80 ft-lbs / 108.5 Nm
- spark plug
- 18 ft-lbs / 24.4 Nm
14mm thread, aluminum head
Save by doing it yourself
A shop typically charges $70–$140 for this service. Buy the parts yourself and save.
Shop Parts for the Hyundai Sonata
Find oil, filters, and maintenance parts for the 2015 Hyundai Sonata on Amazon.
Tools & supplies
Step-by-step guide
Detailed walkthrough with tips for first-timers.
Read guide →How often to change oil
Intervals, severe service, and what your car needs.
Read guide →Synthetic vs. conventional
Which oil type is right for your engine and budget.
Read guide →Have info for this vehicle?
Help fellow owners — submit specs from your owner's manual.
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