Season 9, episode 13, which originally aired May 30, 2018 was the last new episode. Dave Rea was in that one. When did he leave? I find no news anywhere regarding this.
I saw Dave at Carlisle and talked to him for a little while. He seemed like he was a Mopar fan first and tv personality second. Very nice guy who talked to me like he knew me for years. I hope he hasn't left the show.