discussed elsewhere, but my pet peeve is the sliding seat mechanism. No bugger can figure it out when getting in the back, and when the seat is forward they always tilt the seat before sliding it. Invariably means me getting into my seat with the steering wheel under my nose, and taking 2 days to find my correct adjustment position. Bad times.
Thought of another one. How sh!t my Monza II's look after 4 years, thats definitely the biggest.