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That sounds like you may have a little water in your gasoline, add something like Valvoline water remover to your tank...

I'm not sure this is related but, I've noticed that on 3 occassions my 1 week old 2013 runs very rough for about 1 minute after starting cold. It feels like the sound of a piston aircraft engine as it warms up , choppy - then after about a minute it runs normally. As I drove off the day, I noticed that during this "warm up " period the car chugged a bit as I was driving down my street. Any thoughts, thae car has 550 mile on it.

It looks like the OP was from last year. I wonder how he made out?

There's not been a car line that hasn't had problems. it just tuff when it's your car. as Gamie-ged said it's most likely a computer issue. as good as they are my macbook pro had a problem once..give Hyundai a chance to get it right. good luck & welcome i'm a newbie to.

Please keep us informed of the update. I also have a 2012 Azera and would like to know the issue.

Welcome to the forum! It sounds like (based on my 2006 Azera) something has driven the processor into "limp-home mode," something the dealer can handle. From Answers.com:

Your engine management and maybe even your transmission is controlled by the ECU. As you know, all computers crash, all software has bugs, and mechanical equipment fails. As such, many ECU units are fitted with a 'limp home mode'. When it detects that something semi-serious is wrong, it enters the limp mode, which means that the engine won't rev beyond a pre-programmed speed, you can't accelerate very fast, or you may indeed be speed-restricted to 40 mph or similar. The transmission may even stay in one or two gears. Bad? Well, no, not really: The alternative would be to either let you drive at regular speeds, with the danger of letting you trash your car (expensive repair, means happy repair people, but angry driver), or stopping you from going anywhere (expensive recovery and stranded on the side of the road means happy recovery company, but angry driver).

Serious acceleration issues in brand new Azera

Hello,

Just joined. I wish I could say I was posting good news but unfortunately this car has a major acceleration issue. I have 630 miles on a 2012 Azera/tech package. Nice car I thought. I have almost been in 3 serious accidents as I cant get this car above 25 mph. I have turned it offf and restarted but it re appears. I had to flat bed it over to the dealer. This si my first hyundai and I am not a happy camper. I was told NOT to take the car back until its solved. I was also advised by legal coundel to get hyundai involved besides the dealer. I need to find the Illinois MFR rep. Anyone know how to do this??

Sounds like quite the defect. Hope to have better news as I will give this one to Hyundai but I bought this car and did not lease it.

AY