Some cars need no introduction and given that the BMW Z4 has been around for some we think this is one. Noted for a longer front end and aggressive body styling, this has always been the roadster for a motorist seeking something with a little more poke than the perennial Mazda MX-5. The Z4 has always been potent and a decent drive – but does the new car split opinion on looks and dynamics? Watch the Auto Express video to find out.