Again we were running our trucks about 180k miles a year. 2012 2013 both had transmission issues and constant engine issues from 500k on. We had injector issues, turbo issues, emission issues constantly. We finally were able to trade them in At 600k . Was so glad to get rid of them. My concern with my 2015 freightliner is making sure it gets driven. Trucks that sit are just asking for problems. Even though I wiill only put about 10k miles a year on it it needs ti be driven frequently.