No, not in this case.quote:
It only has 15k miles so would it actually have something to do with the spark plugs?
Depending on what kind of dealer you will be talking to, the result could be a complete waste of time (and money), or a pleasant success story. It really depends on the dealer's attitude.
You have to try the dealership anyway, since it has to be fixed under warranty. Make sure that in any case they give you the slip with whatever they did to diagnose/fix the problem. That way you establish a paper trail of the problem.