[donaldjrhome]

Just got an 18 KONA with the 2.0 and I love it, the problem is when cold and jump on highway I get a rotten egg smell for a bit. Dealer says no problem he can find. Anyone else notice this?

 

[Crona]

I've had that problem with an older car and that was because the air filter needed to be changed out. With new cars, I assume it's because the deposits of sulphur and hydrocarbons that builds up in the catalytic converter are being burned up. Heard this happens when you usually drive your car slowly and the odd times when you put the pedal to the metal, it burns up the deposits built up.
This is just my guess.

 

[Bebop]

Sulfer in the gas. Try a different brand of gas.

 

[donaldjrhome]

Sulfer in the gas. Try a different brand of gas.

I recently switched stations, so I will give that a try. thank you

 

[Gideon]

If you don't notice any difference from switching octanes/brands you may want to look into some fuel additives. Most of them are pretty cheap and should help aid in removing any old buildup.