Depends how old you are. Up through the 80s, Jeep still had a reputation as a rock-solid, durable brand. (The reality probably changed sometime in the 1970s, but it takes time for word to get out.) A lot of people's mental model is set somewhere in their 20s/30s, and they never really update it. So a lot of baby boomers still think of Jeep as a reliable car.