For about a month now, my 2003 Elantra has been very loud. At first I did not think anything about, but others noticed and told me that the car used to be very quiet. I suspect that rust may have corrodded the muffler system, as I live in a very wintry area with a lot of road salt in use.

Something tells me that rusty mufflers are NOT covered under the warranty. Am I right?

 

Mufflers are not listed under the wear items not covered by the 5 year/60,000 miles bumper to bumper warrenty. I'd call the dealer or contact Hyundai to find out.

 

on that car it can also be the exhaust manifold that's cracked too or flex pipe