Four-door sedan · 2.0L Nu Atkinson-cycle inline-four (147 hp)
2018 Hyundai Elantra Sedan SEL Automatic
Hyundai's 2018 U.S. brochure lists the Sedan SEL with this 6-speed shiftronic automatic configuration.

Photo: “2018 Hyundai Elantra SE, front left” by MercurySable99 / Wikimedia Commons, licensed under CC BY-SA 4.0. Cropped to 16:9.
Factory configuration
What this model is
- Trim
- Sedan SEL
- Body style
- Four-door sedan
- Engine
- 2.0L Nu Atkinson-cycle inline-four (147 hp)
- Transmission
- 6-speed SHIFTRONIC Automatic
United States configuration. Option packages, emissions calibrations, colors, and accessories are not separate configurations.
Configuration-specific ownership
Maintenance for this exact configuration
These items are filtered to the engine, transmission, trim, and model-year applicability recorded for this configuration. Broad Amazon category searches are suppressed here; shopping links appear only beside catalog-backed part numbers.
Service desk
What this car needs & when
Use this as a service-planning checklist for 2018 Hyundai Elantra Sedan SEL Automatic. Start with the interval, confirm which engine or configuration you have, then use an exact ordering reference when one is verified.
- Service topics
- 5
- Factory intervals
- 4
- Fitment-scoped
- 5
- Exact references
- 1
Before orderingIdentify your engine, options and build date.Part numbers and sizes can change within one model year. Shopping links appear only for catalog-backed references; still verify the listing against your vehicle before ordering.
Engine oil and filter
Sourced interval available
Source: Hyundai USA — 2018 Elantra GT Quick Reference Guide · Scheduled Maintenance (Normal Usage) table · checked
Engine air-cleaner filter
Sourced interval available
Source: Hyundai USA — 2018 Elantra GT Quick Reference Guide · Scheduled Maintenance (Normal Usage) table · checked
Spark plugs
Sourced interval available
Source: Hyundai USA — 2018 Elantra GT Quick Reference Guide · Scheduled Maintenance (Normal Usage) table · checked
Engine coolant
Sourced interval available
Source: Hyundai USA — 2018 Elantra GT Quick Reference Guide · Scheduled Maintenance (Normal Usage) table · checked
Oil filter
Exact reference available
Elantra sedan cataloged engines
Catalog fitment only; it does not establish or replace Hyundai's service interval.
Source: K&N — Hyundai Elantra replacement oil-filter catalog · 2018 Hyundai Elantra 1.4L, 1.6L, and 2.0L L4 Gas rows — HP-1004 · checked
Verified ordering references
- Validated equivalentK&N HP-1004
Qty. 1 · Spin-on engine oil filter · catalog-listed
K&N catalogs this exact replacement for the stated 2018 Elantra application; confirm VIN and installed engine before ordering.
Catalog: K&N — Hyundai Elantra replacement oil-filter catalog · 2018 Hyundai Elantra 1.4L, 1.6L, and 2.0L L4 Gas rows — HP-1004 · checked
Search this part on Amazon
Sources
Other 2018 configurations