Oh well both cars are a totaly different league
you cannot compare Honda civic with an RX8 in terms of speed
Rx8 is obviously much faster than Honda civic
and as far as top speed is concerned
Most cars these days have a good top speed and do reach it
most cars do atleast 140 Kph and 220 Kph
and in comparison of Honda to Rx8
Handelling Speed Stability at high speed
offcourse Rx8 mate all the way