For an 800cc car it's pretty nippy once you get it going as I have managed to get it off the clock at 110mph.
A must to all owners is to get the Matiz lowered, I had mine lowered with a set of PI springs which lowered it 30mm and it handles very well for a narrow, tall sided car.
I have also had my alloy wheels changed for slightly wider TSW Alpines which make the car look better, I am now in the process of fitting a Renault Laguna front splitter to the front bumper as well.
Also on the outside I have had the car de-badged to make it look wider and the reverse lamp has been tinted red.
I have had my brake calipers and drums painted silver which looks great on my car as it's finished in Cobalt blue.
Also on the outside I've fitted a stainless steel 2 inch big bore tailpipe.
I haven't done much on the inside yet, just altered the stereo slightly - I have a Kenwood mask head unit with steering wheel remote, Pioneer 10cm 3-way door speakers, in the rear I have Phillips 6x4's which are 2-way speakers and I have a 8 inch Vibe sub-woofer. My front and rear speakers, if anyone wants to know, are a straight swap for the standard speakers.