[TIMTOM]

I bought a Brand new 2018 ES 3 weeks ago with 20 miles on it, about a week ago the car developed like a flutter in the exhaust on cold start (see video link) and a sort of whine in the engine while accelerating. Took the car to the local Hyundai dealership here in south jersey to have it looked at and they claim “there’s nothing wrong with the car that they can see or hear” I’m hoping someone here can help me diagnose it as something is clearly not quite right.

Video - https://youtu.be/HhcC7G03J3o

 

[TIMTOM]

I should also mention that the car developed these noise with about 500 miles on the vehicle

 

[R1600Turbo]

I have seen something similar recently but it was on a car that is highly modified. I would have to ask him what he did to fix it. May have been new plugs.

 

[rhr]

Normal

Mine does a similar thing on cold start up.

 

[R1600Turbo]

Normal

Mine does a similar thing on cold start up.

Mine has a little blips here and there too on cold startup, but his is clearly not normal.