2007 Toyota Corolla Front Wheel Drive Automatic 63,000 miles
I drive up a dirt road and our road is in restoration phase. I went over some dryong out mud and where a neighbor had smoothed out the road, an exposed rock made contact woth my car as I heard a quick BUMP. 0.3 of a mile latter, I was hme and looked under and spotted a dent o the b ottom of my muffler (was not leaking or making any noise when car was running). Is this dent a danger? Do I need immediate repair? Etc.