Ok, I just bought a 2010 Mazda 6 off company lease from a friend and noticed the rear tail lights are melting on both sides - yes, actually melting. Original bulbs are as installed. Brought it to the dealer and of course its out of warranty with 48,000 miles & no Mazda won’t repair it (for free anyway). Original bulbs. Is this a problem with Mazdas and are there many documented cases?? I’m in the process of brining it to the next level. Help!
Sounds like a bad ground.
Google it just like you said…Tail Lights Melting - 2010 Mazda 6