2018 Hyundai Elantra Problems

2018 Hyundai Elantra problems owners report most

2018 Hyundai Elantra problems are documented in public: owners have filed 335 complaints with NHTSA, the earliest in 2018 and the most recent in 2026. Sorting those by the component the filer named puts the engine clearly first, at 172 of the 335 complaints, close to half of everything filed.

A complaint is not a repair bill and not a defect finding. It is one owner telling the regulator something went wrong. What makes the count useful is the concentration: when one component takes 51 per cent of everything filed on a car, the pattern is doing more than chance.

Against the 2017 car, this model year has drawn 58 per cent fewer complaints (335 against 796). Both years are led by the engine, so this is a fault that carried over rather than one introduced with the 2018 car.

Of those complaints, 12 describe a crash and 8 describe a fire. Filers reported 7 injuries. One complaint reports a death.

Recalls on the 2018 Hyundai Elantra

A recall means the manufacturer or the regulator found a safety defect, and the repair is free at a franchised dealer however old the car is. There is one recall on this model year. Your own car may be covered by some, all or none of them, so check the VIN rather than the model.

In owners own words

These are complaints filed about the engine, quoted as written. They are one persons account rather than a diagnosis, and they are here because a symptom described by a driver is easier to recognise than a component name.

Hyundai engine from 2017 and up are not good engines my experience on my 2018 Hyundai engine is the same as what I see 90 percent of Hyundai owners are having regardless of the year there all the same engines it’s burning oil it’s making ticking noise with regular maintenance no neglecting y’all have to understand there are so many ways and possibilities of engine premature failure then it is Maintaining the engine during buliding these engines you have metal particles over tighten the heads the blocks not seating the piston rings properly dirt that can clog up the oil galleys to luberciate t

Formal Complaint: Engine Failure in 2018 Hyundai Elantra To Whom It May Concern, I am submitting this formal complaint regarding a severe and unresolved issue with my 2018 Hyundai Elantra, which has been problematic since the time of purchase and has now suffered a complete engine failure. Despite regular maintenance and responsible use, the vehicle has proven to be unreliable and unsafe. 1. Nature of the Problem The most recent and critical issue involves total engine failure. On May 12, 2025, I brought the vehicle to North Freeway Hyundai due to the car not starting. Their official diagno

About 4 weeks ago (mid-May) I was driving in stop and go traffic on a major highway. My car is a 2018 Hyundai Elantra, manual transmission. After about 30 minutes of this, the car started to just cut out, the engine cut out when I was changing gears. It did this about 6 times on my drive home. I noticed that when the rev meter got below 1, the engine would just stall out, so I tried to give it gas to keep the revs up. In addition, the engine was making a knocking sound. I took it to my mechanic's the next day and when he heard the sound, he said it needs a new engine. He has had a few customer

Unfortunately I bought a Hyundai Elantra sport brand new in 2018 i’ve kept the maintenance even to this day the car currently at 147,300miles. However I started having issues at 30,000 miles check engine would go on the car with shake and stall and miss fires would occur frequently. Every time I took it to the dealer they reset the computer but never made an actual note of what was going on with the car. That dealership that I took it at the time was Universal Hyundai in Orlando, Florida. So now that I have 147,300 miles the same misfires are now catastrophic failures on the same cylinders, to

Every component, by complaint count

The full breakdown of what owners named when they filed. Components below the top ten are grouped out of this table.

How other model years compare

The same nameplate across the years we hold. Complaint counts fall naturally for newer cars because fewer of them have been on the road for long, so read the column as a rough signal rather than a ranking. In this set the 2017 Hyundai Elantra has drawn the most complaints and the 2021 Hyundai Elantra the fewest.

What to check on the engine

Engine reports range from oil consumption between services to rough running, stalling and a loss of power under acceleration. Oil use is the one owners notice latest, because nothing warns you until the level is already low.

Buying a used 2018 Elantra

Ask for every service record and check the gap between oil changes against the level on the dipstick now. An engine using oil quietly is the most expensive fault on this list and the easiest one to miss on a test drive.

If you already own one

Start a log of oil level between services. A documented consumption rate is what turns a conversation with a dealer from an opinion into a claim, and some manufacturers have covered these repairs well past the warranty.

• Check the oil level and condition yourself before buying.
• Ask for service records covering every oil change.
• Record oil level between services to document consumption.
• Have a compression or leak down test done before a major repair.