I just had to have my 2015 Jeep Renegade towed to a dealer because it would not start. Tow driver told me has had to tow numerous Jeeps not just Renegades for not starting because the muffler froze up creating excessive back pressure not allowing the unit to start. I did some research on the internet and read dozens of other owners experiencing the same problem. When inquiring with the Jeep dealer about this they told me they had other customers with this problem. I have never heard of such a thing and that the fix is to drill weep holes in the muffler to allow moisture to drain out. I was charged 150.00 dollars to have two holes drilled in my 2015 Jeep that only has 7200 miles. This seems like a factory issue and should be covered by the manufacturer of the mufflers. We buy Jeeps because of the reputation they a rugged, durable, and dependable for severe weather driving in the northern states, this does not say much about these vehicles.