2021 Hyundai Elantra Problems

2021 Hyundai Elantra problems owners report most

2021 Hyundai Elantra problems are documented in public: owners have filed 162 complaints with NHTSA, the earliest in 2021 and the most recent in 2026. Sorting those by the component the filer named puts the electrical system clearly first, at 42 of the 162 complaints, about a quarter 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 26 per cent of everything filed on a car, the pattern is doing more than chance.

Against the 2020 car, this model year has drawn 38 per cent fewer complaints (162 against 262). The 2020 car was led by its engine instead, so the pattern shifted between the two years.

Of those complaints, 8 describe a crash and 1 describes a fire. Filers reported 3 injuries. One complaint reports a death.

Recalls on the 2021 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 are 6 recalls 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 electrical system, 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.

I was driving on the Highway at the posted speed limit when the warning "Check Forward Safety System" came up and remained on my dashboard. The cruise control stopped working also. The light remained on even after stopping and starting the car and has remained on ever since. I have never been in an accident nor has my computer system reported any collision. My Hyundai Blue Link app gives me the following DTC: C162078. It started on [XXX]. My collision detection system does not appear to be working at all and my cruise control no longer works. I'm very concerned about it malfunctioning based on

I am writing to report a serious and ongoing safety issue with my 2021 Hyundai Elantra Hybrid that remains unresolved despite multiple visits to Hyundai service centers and independent repair shops. I’ve also found numerous consumer discussions online describing nearly identical issues with the same model and newer Elantra Hybrid models, suggesting this may be part of a wider systemic defect. The core issue lies within the vehicle’s hybrid system. Shortly after a recent system/software update performed at a Hyundai dealership, a warning message began appearing at random intervals stating: “Ch

On August 17, my new Elantra lost power steering, and most safety related features. Most all instrument warning lights came on. Was able to get car to dealer service where they kept car overnight, and reset the error lights. They told me, they recorded the computer codes, but could not find the cause of the problem. On August 26, again the instrument warning lights suddenly came on AGAIN. Took car to dealer service, where they kept car almost 2 weeks, but could not find the cause. They recorded computer codes. I contacted Hyundai, and a case number was established, but no fix has been fo

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 electrical system

Electrical reports cover a wide spread: screens that reboot, cameras that go black, charging that stops, and warning lights that arrive in groups. The common thread is that the fault comes and goes, which makes it hard to show a mechanic on demand.

Buying a used 2021 Elantra

Sit in the car with the engine running and work through every switch, screen and camera before you talk about price. An intermittent fault that appears once during a ten minute check is likely to appear often once you own it.

If you already own one

Have the battery and charging system tested before replacing any module. A weak battery produces electrical faults that look like a dozen separate failures, and the test is free at most parts retailers.

• Test every screen, camera and switch before agreeing a price.
• Have the battery and alternator tested before replacing a module.
• Ask for stored fault codes, including the ones already cleared.
• Check whether the fault is covered by a software update.