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 @ forums.edmunds.com/discussion/13025/Hyundai/Elantra....updated 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

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

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