Not Supra! Our new (to us) Micra auto is playing up after 4 days, it's an 03 plate 1.4 auto, but I know nothing of auto boxes really, so asking for thoughts.
1st to 2nd seems OK, in gear it seems to do everything it should - not slipping etc., but going from 2nd to 3rd yesterday the revs went up by a few hundred rpm (depending on how hard I was accelerating at the time) before engaging 3rd.
My guess was some kind of solenoid to select gears, or the torque converter itself? Like I said I don't know how they work really. It's on 80k miles and I don't think the fluid's ever been changed, would that do it? It was happening yesterday after half hour to an hour of driving around town, didn't happen this morning when cold.
Also, when stopped the battery light sometimes flickers on, not sure if that might be related - it had a new battery put on about a week ago.