2018 Hyundai Elantra

Typical pattern

7.4% of complaints about the 2018 Hyundai Elantra came in the first year, which is unremarkable for a 2018 vehicle — around the middle of the 182 model-years on record. The median complaint arrives at 4.8 yr in service. The most-reported system is engine (140 complaints), typically at 5.6 yr or about 38,000 miles.

Complaints: 406
Median age at failure: 4.8 yr
Median mileage: 29,000 n=124
Crash / fire / tow: 9.6% of reports
Safety recalls: 0

When each system is reported — middle 50% of complaints

System

0y2y4y6y8y10y12y14y

Engine

140 reports · 38,000 mi

5.6 yr

10%

Other

54 reports · 29,800 mi

4.4 yr

9.3%

Electrical system

43 reports · 40,000 mi

5.3 yr

14%

Power train

24 reports · 41,250 mi

4.8 yr

Fuel / propulsion

19 reports · 9,900 mi

6.3 yr

5.3%

Exterior lighting

16 reports · 1,672 mi

4.8 yr

Service brakes

15 reports · 26,600 mi

4.1 yr

13.3%

Steering

15 reports · 5,200 mi

4.1 yr

6.7%

Structure

15 reports · 40,000 mi

3.4 yr

6.7%

In owners’ own words

Exterior lighting mileage not reported 3.1 yr in service

THE REAR LIGHTS, BRAKE AND TAIL LIGHTS , BURN OUT FREQUENTLY. NOW THE BRAKE LIGHT WIRING HAS MELTED. HAD IT REPAIRED TWICE!!

Exterior lighting mileage not reported 3.8 yr in service

It appears the parking lamps stay on when car turned off while headlights are in AUTO. This leads to unintended battery drain leading to unoperational car. Per Owner's Guide: The system automatically turns off the parking lamp when the key is removed (remote key) or when the driver turns the engine off (smart key) and opens the driver-side door. This does not meet the Owner's Guide's language. Dealerships and inspection services did not confirm/reproduce this. There are no warning lights or indicators of this.

Exterior lighting mileage not reported 4.6 yr in service

While driving at night the headlights turn off. The headlights are set to auto at all times. The headlights will come back on when the switch is moved to the on position. This occurs almost nightly.

Other 57 mi 1.1 yr in service

THE AIRCONDITION INTERNAL CIRCULATION IS AUTOMATICALLY TURNING OFF AFTER FEW MINUTES

Other Elantra model years

How to read this

This is what owners reported, not a reliability rating. People file with NHTSA about alarming failures, not routine ones, and complaint volume tracks how many cars were sold.
Failure ages come from the incident date on each complaint, populated on about 83% of records. Mileage is shown where reported — NHTSA’s 2021 system change cut mileage capture to roughly 15%, so it thins out sharply after MY2020.
Every rank compares this vehicle only against others of the same model year. A 2025 car has not had time to accumulate five-year failures, so comparing early-failure share across years is meaningless.
Fourteen make-months distorted by media storms and mass recalls — Toyota in February 2010 ran 11× normal volume across 33 models — are excluded.
Recalls are manufacturer actions and authoritative; complaints are not. A recall listed here may already have been performed on any individual car. Check a specific VIN at nhtsa.gov/recalls.