Hello, my first post here. I am original owner of 2001 mdx, car has 212K miles on it. I had transmission rebuilt around 135k. Was driving somewhere a week ago at 60mph, took foot off gas and car downshifted suddenly, jerked me forward. Hadn't done this previously. Was able to get car to shift back to highest gear a few times but ended up where it would no longer do so. Was able to drive home 30 miles in lower gear, engine was turning around 4500rpm at 50mph. Took car to local transmission shop, tranny acted up the same way during the drive to the shop. Did free diagnosis, said problem was internal, would cost $495 to diagnose. He thought a repair could run from $1000 to $2000, possibly more depending on diagnosis. Given age and mileage on car, I didn't know what to do, so I told shop I wanted to look around before deciding, see if i could find another car to consider before committing to unknown repair costs. The shop said fine and that I could leave the car for a few days while exploring my options. I managed to find another car, went back to the tranny shop to tell the owner i wasn't going to do the repair and that I wanted the car back. He gave it back to me, I drove the car home, and it seems to be running fine again. I've since driven it 30-40 miles at various speeds and accelerations and i've been unable to duplicate the problem. Does anyone have any comment on my experience? I have a nagging feeling the problem may have been trivial, perhaps a loose electrical connection, etc, and the shop was being opportunistic, looking to do an unnecessary repair. Meanwhile, I bought another car from a dealer, part of the deal being that i trade in the MDX for a minimal amount due to the transmission issue. I love my old MDX and it's served me well, i would feel better about the whole thing if it had "stayed broken". Any feedback would be appreciated.