2018 Hyundai Elantra Problems

Half of the owners who gave a mileage had the problem by about 38,000 miles.

What to check before you buy

• Ask the seller not to warm the car up, and start it cold. Listen for ticking, knocking or a rough idle in the first minute.
• Pull the oil dipstick and the oil cap. Low oil, a gasoline smell or a milky film on the cap are reasons to walk away or get an inspection.
• Plug in an OBD2 scanner. Stored or pending codes matter, and so do readiness monitors that show "not ready", which usually means the codes were cleared right before the sale.
• Ask for oil change records. A gap in the records on a model known for engine complaints is a negotiating point at minimum.

Tools that help

What owners said

While driving the engine light came off and car shut down instantly. I see there is issues with the 2018 Hyundai Elantra but I’m coming ot if picket. $7678.50 I purchased the vehicle I. ZMay and purchased a standard warranty that covers $2500 per repair. I have a 30/3 Tucson and love that vehicle! This one! Not so much!!!! I owe $11,000…Owner complaint, filed 2026

After the car was started, I drove 3 houses over when there was a loud knocking sound and the car just shut off. When trying to restart it wouldn't and the check engine, battery, and oil lights came on. After pushing it out of the road we checked the oil and it was empty. The oil has just been changed less than 2 months ago. Now the…Owner complaint, filed 2026

Half of the owners who gave a mileage had the problem by about 26,000 miles.

What to check before you buy

• Test every switch: windows, locks, mirrors, seat heaters, the screen, the backup camera, Bluetooth and every USB port.
• Watch the dash at startup. Every warning light should come on briefly and then go out.
• Have the battery and charging system tested. A weak alternator or battery drain shows up here.

Tools that help

What owners said

Alarming rate of oil consumption causes sudden loss of power / acceleration which definitely increases probably of causing an accident. Local repair shop confirmed extremely low oil level with no evidence of where oil went shortly after oil change and annual safety inspection. All the dashboard warning lights came on when it happened but…Owner complaint, filed 2026

So my 2018 Hyundai elantra has had the ignition/starter coils go bad now for the third time, the first 2 times the car was under warranty, I thought the second time it was odd to have the same problem, the car shakes violently, stalls out, and or refuses to start. But my warranty just ran out in 2023 and now of course the same problem is…Owner complaint, filed 2024

Half of the owners who gave a mileage had the problem by about 40,000 miles.

What to check before you buy

• Drive it from cold if you can. Shifts should be smooth in every gear, including reverse.
• Feel for slipping (revs rise without the car speeding up), shudder at low speed and a delay when you put it in gear.
• Listen for whining, which is a common CVT complaint, and clunks when you go from drive to reverse.
• If it has 4WD or AWD, engage it on the test drive and ask when the transmission and differential fluids were last changed.

Tools that help

What owners said

I have been having transmission issues with my car since before July 2024. The transmission would stutter or not engage when I put my foot on the accelerator. The transmission failed in November 2024 and was eventually replaced by Hyundai in May 2025. I noticed stuttering the first day of having my car back but was told there was nothing…Owner complaint, filed 2025

Dual Clutch Transmission (DCT) hesitates when slowing to a stop, then accelerating. The car completely looses power and limps for a second or two until finally it engages and power finally goes to the wheels. Also, the DCT clutch completely failed at 117,000 miles while traveling 65mph on the freeway, and Hyundai won't replace the…Owner complaint, filed 2023

Half of the owners who gave a mileage had the problem by about 14,000 miles.

What to check before you buy

• Smell around the engine bay and under the rear of the car for raw fuel.
• On the test drive, accelerate firmly from a stop and up a grade. Stumbling, surging or a flashing check engine light are red flags.
• Fuel pump recalls are common. Check this exact VIN for open recalls before you buy.

Tools that help

What owners said

Cars engines stopped for no apparent reason pulled over and it started back up but it stopped two more times within a two block radius both times it restarted the date was2/17 26 on the next day it did the same thing but only onceOwner complaint, filed 2026

The contact owns a 2018 Hyundai Elantra. The contact stated while driving 65 MPH, the vehicle hesitated, and the vehicle lost motive power. The driver was able to pull over to the shoulder of the roadway, where the vehicle failed to restart. The check engine warning light was illuminated. The vehicle was towed to an independent mechanic…Owner complaint, filed 2024, at 6,300 miles

What to check before you buy

• Check every light: headlights on low and high, fog lights, brake lights, turn signals and reverse lights.
• Run the wipers on every speed with washer fluid, and run the defroster front and back.

Tools that help

What owners said

The rare brake light is working fine but the car dashboard computer keeps on saying „Check rare brake light“ intermittently. It either needs a repair (although brake lights are working) or a replacement. Please resolve this issue because other Elantra owner have reported the same.Owner complaint, filed 2026

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.Owner complaint, filed 2022

Half of the owners who gave a mileage had the problem by about 5,000 miles.

What to check before you buy

• Turn the wheel lock to lock while parked and listen for groaning, clicking or binding.
• On a straight road the car should track straight with the wheel centered and no loose feeling.
• A power steering warning on the dash, even briefly, deserves a mechanic’s look before you buy.

Tools that help

What owners said

Steering keeps locking up steering wheel light light and other lights in my dashboard came on which caused my back camera to stop working took it to dealership got a diagnosis it appeared nothing was wrong which they calibrated it and fixed the problem for a month and it started back to the same problem again called the dealership to see…Owner complaint, filed 2026

My car's steering wheel is making a weird rubbing noise after driving for a short time on wet roads. It sounds like rubber is being turned against something (ie not metallic-sounding) This occurs whether I am in park, drive, reverse, and occurs when turning the wheel in any direction. No warning lights turn on. Currently, it only occurs…Owner complaint, filed 2024

Parts named most: Body (15).

What to check before you buy

• Look underneath with a flashlight. Utah road salt is hard on frames, brake lines and the bottoms of doors.
• Open and close every door, the hood and the liftgate, and lock and unlock each one.
• Use a paint thickness gauge and compare panels. A panel that reads very differently from the rest has likely been repaired.

Tools that help

What owners said

The factory paint on the hood, roof, and front fenders is delaminating, with the largest defect being on the hood. These are available for inspection upon request. As this is progressing, structural pieces may begin to rust, but this also presents a critical visibility issue. During one drive on 6/8/2026, the hood paint began flaking…Owner complaint, filed 2026

This isn’t a safety concern but it is a concern per the vehicle. My hood on my Hyundai Elantra (silver) has bad paint and is starting to chip. My car isn’t the only one I see Hyundais with paint chipping everywhere on them.Owner complaint, filed 2025

Half of the owners who gave a mileage had the problem by about 23,000 miles.

What to check before you buy

• The pedal should feel firm and the car should stop straight without pulling, grinding or a pulsing pedal.
• The ABS and stability control lights should go out after startup and stay out.
• Look through the wheels at the rotors. A deep lip on the edge means brakes are due soon, which is a fair thing to negotiate on.

Tools that help

What owners said

I had my car brakes replaced checked for the past three months it's been making a grinding noise when braking at slow speeds had the car checked 3 different shops, they said rotors and pads are perfectly fine almost new, but the grinding is still there dust shield is not touching pads are new, rotors on specifications normal now i am…Owner complaint, filed 2026

The contact owns a 2018 Hyundai Elantra. The contact stated while driving 65 MPH and attempting to down due to traffic, the brake pedal was depressed; however, the vehicle skidded and the brake pedal became firm. There were no warning lights illuminated. The vehicle was diagnosed with front and rear brake failure. The contact was…Owner complaint, filed 2022, at 93,148 miles

Half of the owners who gave a mileage had the problem by about 16,000 miles.

What to check before you buy

• On the test drive, press the gas gently and firmly. The response should be smooth with no lag or surge.
• Set the cruise control, then use resume and cancel to make sure each one works.

Tools that help

What owners said

We own a driving school. My husband was giving a road skills test for a student in our 2018 Hyundai Elantra. For unknown reasons the car rapidly accelerated. He told the driver to get off the accelerator. She said she was not on the accelerator. He looked over and her foot was on the brake. We have an instructor's brake and by pressing…Owner complaint, filed 2023

While driving at any speed, vehicle momentarily does not respond to any gas pedal input. Driver presses on gas pedal but no change in speed, no rpm change no warning lights on dash. After a few seconds vehicle responds again randomly. Puts driver at danger due to not being able to same speed as traffic very dangerous!Owner complaint, filed 2023

What to check before you buy

• The air bag (SRS) light should come on at startup and go out within a few seconds. If it stays on, the system may not work in a crash.
• Air bag recalls are some of the most serious. Check this exact VIN for open recalls and get proof any recall work was done.

Tools that help

What owners said

I was in a car accident. I was hit on the passenger rear side and the car spun out of control but none of the airbags deployed. The vehicle has not been inspected by the manufacturer but we did reach out to them and are in the process of filling out a questionnaire. The vehicle is currently being assessed in a body shop as we work with…Owner complaint, filed 2024

Driver airbag light came on. My car has 33,000 miles on it. I live in California and the car is garaged. I think the maker has had airbag recalls on other modelsOwner complaint, filed 2024

Half of the owners who gave a mileage had the problem by about 11,000 miles.

What to check before you buy

• Read the four-digit DOT date on each tire. Tires older than about six years should be replaced, whatever the tread looks like.
• Check tread depth on all four. On AWD vehicles all four tires should match.
• The tire pressure light should go out after startup.

Tools that help

What owners said

While driving at low speed (25mph) I could hear a sound coming from one of my tires that sounded like I had rolled over a large piece of tape. I slowed the car and it sounded like something was stuck on a tire. I pulled over and found nothing when I examined all 4 tires. In the morning I checked the tires and tire pressure was good on…Owner complaint, filed 2021

The tire pressure monitoring system consistently indicates low tire pressure on 3 of the 4 wheels whether stationary of while driving at any speed. Manual checking of the tire pressure indicates the tires are at correct pressure. This problem first began while in warranty. Hyundai dealer did a repair. Next time it occurred, the car was…Owner complaint, filed 2021

Half of the owners who gave a mileage had the problem by about 5,000 miles.

What to check before you buy

• Drive over a few bumps and potholes slowly with the radio off and listen for clunks or rattles.
• Check the tires for uneven wear on the inside or outside edges, a sign of alignment or suspension trouble.
• Look behind the wheels for oily, wet shocks or struts.

Tools that help

What owners said

When the vehicle is turning right over uneven surfaces (or bumps), the vehicle makes crunching/creaking sounds that may suggest suspension issues or fear of driving the vehicle. Dealer does not understand the issue and unable to repair. It would appear related to engine mount rubber that can reduce noise if applying lubricating sprays…Owner complaint, filed 2021, at 21,185 miles

Since my car had 7,000 miles, I am experiencing a creaking sound around front wheels when turning at slow speed, more so when on uneven pavement.Owner complaint, filed 2019, at 7,000 miles

What to check before you buy

• Where it is safe, try the adaptive cruise and lane keeping on the test drive and watch for sudden braking or warnings with nothing there.
• Check the windshield in front of the camera and the bumper sensors for cracks, chips or poor repairs.
• Ask whether the windshield has been replaced. The camera has to be recalibrated afterward, and many shops skip it.

Tools that help

What owners said

I had to replace my Cadillac converter twice and it keeps messing up on my car and I have to keep replacing my headlight bulbs on my vehicle. They keep going bad and the vehicle tells me when the headlight bulbs is out, but I don’t replace the headlight bulbs, four times and the catalytic converter three times And my Blindspot detection…Owner complaint, filed 2024

Car doesnt register maps well freezes dashboard GPS lights flicker. Keeps making noise beeping requesting passenger puts selt belt on when theres no one there.Owner complaint, filed 2024

What to check before you buy

• Pull out and latch every seat belt, and let each one retract on its own.
• Try every seat adjuster, and watch for a passenger air bag "off" light when an adult is in the seat.

Tools that help

What owners said

The contact owns a 2018 Hyundai Elantra. The contact stated while the vehicle was parked, the contact stated that while entering the vehicle, the contact noticed an unusual burned spot on the back rest of the front passenger's seat. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not…Owner complaint, filed 2026, at 86,040 miles

The contact owns a 2018 Hyundai Elantra. The contact stated that the seat belt was inoperable. The contact stated that the air bag was falling out of the air bag enclosure. The vehicle failed to start immediately but was started after several attempts. The air bag and seat belt warning lights were illuminated. The contact stated that the…Owner complaint, filed 2023, at 46,000 miles