U.S. vehicle reference
2018 Hyundai Elantra Oil Capacity and Oil Type by Engine
The 2018 Hyundai Elantra takes 4.23 quarts of SAE 5W-20 or 5W-30 with a filter change (2.0L); or 4.76 quarts of SAE 5W-30 or 5W-40 with a filter change (1.6L), according to the Hyundai owner's manual.
Quoted from the Hyundai owner's manual with page numbers. Figures online often conflict because they mix engines or with- and without-filter amounts, so match your engine first.
Compiled by Uzman Munib · Record updated · Source and review standards
2018 Hyundai Elantra oil capacity and oil type by engine
US quarts by engine, quoted from the Hyundai owner's manual with the page for each figure. Coverage is limited to the named configurations.
| Engine | Oil capacity | Oil grade | Without filter change | Source |
|---|---|---|---|---|
| 2.0L Nu GDI four-cylinder2.0L GDI | 4.23 US qtwith filter | SAE 5W-20 or 5W-30 | Not stated | Manufacturer referenceEstimate oil-change cost |
| 1.6L Gamma T-GDI four-cylinder1.6L Turbo | 4.76 US qtwith filter | SAE 5W-30 or 5W-40 | Not stated | Manufacturer referenceEstimate oil-change cost |
At a glance
2018 Hyundai Elantra reference
Use the summary to orient yourself, then open the exact engine, drivetrain and source record below.
Oil type
SAE 5W-20 recommended; 5W-30 also listed by temperature
Source
2.0L GDI manufacturer referencesAccessed 2026-09-05Wheel torque
Not published
2018 Hyundai Elantra Oil Capacity and Oil Type
Oil type
SAE 5W-20 recommended; 5W-30 also listed by temperature
Source
2.0L GDI manufacturer referencesAccessed 2026-09-05Oil specification
API SM / ILSAC GF-4 or above; ACEA A5/B5
Source
2.0L GDI manufacturer referencesAccessed 2026-09-05Oil filter
Not published
2018 Hyundai Elantra Tire Size and Pressure
Spare tire
T125/80D15 or T125/80D16 compact spare
Source
2.0L GDI manufacturer referencesAccessed 2026-09-05Bolt pattern
Not published
Fluids
Transmission capacity
Not published
Transmission fluid
Hyundai ATF SP-IV for automatic transmission; manual specification varies by transmission
Source
2.0L GDI manufacturer referencesAccessed 2026-09-05Coolant type
Phosphate-based ethylene glycol coolant for aluminum radiator
Source
2.0L GDI manufacturer referencesAccessed 2026-09-05Power steering fluid
Not published
Differential fluid
Not published
2018 Hyundai Elantra Towing Capacity
Towing capacity
Not published
Payload capacity
Not published
Service Intervals
Compare service intervals| Item | Months | Miles |
|---|---|---|
| Engine oil and filter | 12 | 7,500 |
| Spark plugs | Not published | 97,500 |
2.0L GDI manufacturer references
2018 Hyundai Elantra Owner's Manual, pp. 8-5–8-9, 7-8–7-12 Accessed 2026-09-052018 Hyundai Elantra PD Owner's Manual PDF copy Accessed 2026-09-052018 Hyundai Elantra MPG by engine and drivetrain
EPA combined ratings run from 25 to 35 mpg across 10 configurations. Match the engine, transmission and drivetrain in the table before comparing fuel costs.
| Configuration / engine | City | Highway | Combined | Annual fuel | CO₂ |
|---|---|---|---|---|---|
| Elantra2.0L 4-cylinder · Automatic (S6) · Front-Wheel Drive · Regular GasolineEPA configuration record | 28 mpg | 37 mpg | 32 mpg | $1,900 | 281 g/mi |
| Elantra2.0L 4-cylinder · Manual 6-spd · Front-Wheel Drive · Regular GasolineEPA configuration record | 26 mpg | 36 mpg | 29 mpg | $2,100 | 301 g/mi |
| Elantra SE2.0L 4-cylinder · Automatic (S6) · Front-Wheel Drive · Regular GasolineEPA configuration record | 29 mpg | 38 mpg | 33 mpg | $1,850 | 272 g/mi |
| Elantra GT2.0L 4-cylinder · Automatic (S6) · Front-Wheel Drive · Regular GasolineEPA configuration record | 24 mpg | 32 mpg | 27 mpg | $2,300 | 327 g/mi |
| Elantra GT2.0L 4-cylinder · Manual 6-spd · Front-Wheel Drive · Regular GasolineEPA configuration record | 23 mpg | 31 mpg | 26 mpg | $2,350 | 338 g/mi |
| Elantra GT1.6L 4-cylinder turbo · Automatic (AM7) · Front-Wheel Drive · Regular GasolineEPA configuration record | 26 mpg | 32 mpg | 28 mpg | $2,200 | 317 g/mi |
| Elantra GT1.6L 4-cylinder turbo · Manual 6-spd · Front-Wheel Drive · Regular GasolineEPA configuration record | 22 mpg | 29 mpg | 25 mpg | $2,450 | 363 g/mi |
| Elantra1.6L 4-cylinder turbo · Automatic (AM7) · Front-Wheel Drive · Regular GasolineEPA configuration record | 26 mpg | 33 mpg | 29 mpg | $2,100 | 305 g/mi |
| Elantra1.6L 4-cylinder turbo · Manual 6-spd · Front-Wheel Drive · Regular GasolineEPA configuration record | 22 mpg | 30 mpg | 25 mpg | $2,450 | 356 g/mi |
| Elantra1.4L 4-cylinder turbo · Automatic (AM7) · Front-Wheel Drive · Regular GasolineEPA configuration record | 32 mpg | 40 mpg | 35 mpg | $1,750 | 256 g/mi |
Annual fuel figures are the EPA snapshot at the source date. The calculator below uses the separately dated fuel-price record and your inputs, so the estimates may differ.
2018 Hyundai Elantra annual fuel cost calculator
Start with the combined MPG for 2.0L 4-cylinder, Automatic (S6), Front-Wheel Drive. Replace it with your measured gas mileage and local pump price for a personal budget.
Formula annual miles ÷ MPG × gasoline price
Fuel cost per mile equals gasoline price divided by MPG. Multiply by your annual mileage for a yearly fuel budget. Add maintenance to estimate cost per mile. For a specific journey, budget a road trip and settle passenger shares.
2018 Hyundai Elantra recall campaigns
NHTSA returned 0 model-level campaign records as of 2026-09-04. A campaign record does not establish whether your vehicle is affected or whether a repair is outstanding. Check your VIN through NHTSA.
NHTSA Recalls API Accessed 2026-09-042018 Hyundai Elantra NHTSA safety ratings
| Vehicle | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2018 Hyundai Elantra 4 DR FWD | 4/5 | 4/5 | 4/5 | 4/5 |
Confirm the engine, tire package and service procedure
Match your engine and transmission with the configuration selector. Check the door-jamb tire label for your installed wheel package and cold pressure. A capacity is not a substitute for the filling procedure in the owner's manual; transmission change quantities and total system capacities can describe different jobs.
Fields marked Not published have no compiled value here. They do not mean zero capacity, no maintenance requirement or permission to substitute a part. Request a specification correction with the exact year, engine and manufacturer reference.
Frequently asked questions
- How much oil does a 2018 Hyundai Elantra take?
- 2.0L GDI: 4.23 US qt with filter; SAE 5W-20 recommended; 5W-30 also listed by temperature. 1.6L Turbo: 4.76 US qt with filter; SAE 5W-30 recommended; 5W-40 also listed by temperature.
- What type of oil does the 2018 Hyundai Elantra take?
- SAE 5W-20 or 5W-30 (2.0L); SAE 5W-30 or 5W-40 (1.6L). Specification: API SM / ILSAC GF-4 or above; ACEA A5/B5; ACEA A5/B5 or API SM / ILSAC GF-4 or above. Use the grade printed in your owner's manual or on the oil filler cap.
- Does the 2018 Hyundai Elantra oil capacity include the filter?
- Yes. These are the owner's manual's with-filter amounts. Check the dipstick after filling.
- What tire size and wheel torque does the 2018 Hyundai Elantra use?
- 2.0L GDI: 225/45R17, 225/40R18; wheel torque not published. 1.6L Turbo: 225/45R17, 225/40R18; wheel torque not published.
- What is the 2018 Hyundai Elantra gas mileage?
- EPA combined ratings run from 25 to 35 mpg across 10 configurations. Match the engine, transmission and drivetrain in the table before comparing fuel costs.
- Are these real-world MPG figures for the Elantra?
- These are EPA ratings, not owner-reported mileage. Use your measured MPG in the calculator to estimate your own fuel budget. The configuration table keeps city, highway and combined ratings separate.
- Does the 2018 Hyundai Elantra have recalls?
- NHTSA returned 0 model-level campaign records as of 2026-09-04. A campaign record does not establish whether your vehicle is affected or whether a repair is outstanding. Check your VIN through NHTSA.
- Does annual fuel cost include servicing or insurance?
- No. The EPA cost and the calculator cover fuel only. Use the cost-per-mile calculator to add a maintenance allowance. Insurance, depreciation, finance costs and registration are separate ownership expenses.
Compare similar vehicles
Sources and record dates
U.S. EPA FuelEconomy.gov vehicle dataset Accessed 2026-09-05U.S. EIA public gasoline price table Accessed 2026-09-05NHTSA Recalls API Accessed 2026-09-04NHTSA 5-Star Safety Ratings API Accessed 2026-09-052018 Hyundai Elantra Owner's Manual, pp. 8-5–8-9, 7-13–7-17 Accessed 2026-09-052018 Hyundai Elantra PD Owner's Manual PDF copy Accessed 2026-09-05Last updated