Looking for some insight from someone who has maybe worked at a dealer and dealt with warranties

Back story: We are having some intermittent hesitation during acceleration. Maybe happens like once every 2 weeks? Definitely not every time, but the times it does happen is far from opportune, like pulling out when you really shouldn't, oops just to then have the acceleration die on you ack!

We took it into the dealer as it is still under warranty, and of course since it doesn't happen all the time they couldn't reproduce the problem or diagnose a cause.

In my opinion, these seems like a rather important issue to get resolved, even if we drive like Miss Daisy there will be times when we need the car to be there on demand.

So, how much can you get a dealer to replace parts when they cannot diagnose the actual problem?

Is there really no alternative other than to just keep trying and wait for it to get worse or something to just completely fail, by which the warranty will likely have expired (have 5k miles left before we are on our own)

For any mechanics out there, what do you do when you can't find the problem a customer describes? Especially if they come back to you after you said you couldn't find anything wrong with it during testing.


Thx for any advice