He also drives a Jeep in the Season 2 Finale Episode, but it seems to be a bit of a darker color than in 1x08.
Can't remember Season 3, to be honest.
In Season 4, it's a silver car. Can't remember the model (just don't care about cars, sorry
) but it's so not MacGyver. Looks like a family car to me; and they focus several times on the interior in later episodes. I guess it's specific advertizing by the car company; similar like they did on "Bones" (which got really annoying after a while).