Mine is a genuine 728i Mtech Sport, 1- it is on the log book, 2- as jas said the real sports have black headlining, 3- again as jas says they are completely colour coded and de chromed, but the difference is the real sport have a different diff and gear ratio so are slightly faster by about 0.7 of a sec something like that but there is loads out there that have the steering wheel and alloys but are not sports, apparently according to a site i was on the real genuine 7 series sport is quite rare as most wanted the luxury packs but also a genuine sport has firmer suspension and sits a bit lower ......hope this helps