My wife took her car in for something, and they recommended changing the exhaust system since it had corroded. My wife agreed, and ever since, her car makes this awful repeated clanking noise whenever she shuts off her car, which lasts for about 10 minutes. She's taken it back several times, they keep declining to fix the problem since they say mechanically, there's nothing wrong, it's just different metals cooling. They have no clue what they're doing over there, don't trust them!!
Cons: They are deceptive, don't trust them.