My Z3 runs great and has been very reliable, BUT when the finish peeled off the wheels BMW told me the warranty only covers if the wheels don't go round. The seats move forward and back as I speed up or slow down. I did have an Austin Healy in the 60s and this car does not measure up. The shifter gating is vague, the seats are not comfortable for any distance (I guess that is why I never need to worry about fuel range), the interior fittings are always falling apart. Even the logo washes off of the emblems. When I have to wait SIX WEEKS for a ABS sensor that I cannot drive without I am not happy. I can get parts for My TR8 quicker and that is more fun to drive.
Good engine, good handling.
Seats that are stable and fit humans, more lateral support, better shifter gating. Larger boot. More durable interior and exterior trim. More durable finish on wheels.