Notes: Be aware that there's a significant trend of owners complaining that the Elantra's fuel economy is significantly less than the EPA estimates.


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
34,755 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2012 Hyundai Elantra fuel system problems

fuel system problem

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2012 Hyundai Elantra Owner Comments

problem #3

Jul 032015

Elantra 4-cyl

  • Automatic transmission
  • 52,134 miles


I was accelerating to enter flowing traffic on highway 14 in washougal, Washington when the Elantra blows a cloud of blue smoke out of the exhaust (burnt engine oil). The incident caused the vehicle behind me to slow down until the cloud cleared. This incident could have caused a accident if I was on a busy highway.this problem has happen to me twice before.I took the car into the dealer and they could not find the problem. There are forums on this problem @ 10-13-15. The dealer recommened the consumer use a higher grade of fuel. Updated 12/31/15. Updated 01/04/16.

- Vancouver, WA, USA

problem #2

Aug 052014

Elantra 4-cyl

  • 31,500 miles
After sitting overnight, vehicle failed to start following morning. Although all components requiring power (windows, headlights, radio, interior lights, etc.) seemed to be functioning ok, jump started vehicle, and it started immediately. A few days later problem recurred; let vehicle sit for some time, and vehicle then started immediately (no jump start). Today problem occurred yet again (waiting to see if vehicle will eventually start). A quick review of online forums indicates a possible issue with the shift interlock, or perhaps a faulty rain sensor. As an aside, a longer-term sporadic, presumably electrical, issue also exists with the passenger side front window. The window will go down without issue, but it often takes multiple attempts from either the passenger side or driver's side window control to get the window back up.

- Culpeper, VA, USA

problem #1

May 192010

Elantra 4-cyl

  • 20,630 miles
My 2012 Hyundai Elantra would not start this morning and this was the third time this has happened starting in May 2014. I hit my door unlock on my key fab and the doors unlocked from here I proceeded start my car. Everything started but the car. I turned back to the starting position and tried again same results. I waited a few minutes and tried again amazingly it started. What is going on with my car" this has happen before the first time called a tow truck driver and by the time he arrived it started. This was followed by a visit to North county Hyundai in carlsbad, ca. Of course the dealership found nothing wrong. Again what is wrong with my car"

- Vista, CA, USA

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