Matthew Sharpe wrote on Tuesday, March 09, 2010 - 06:37 am:Maybe possible to get to 100,000 on a N/A rotary without cracking it open, but my workmates turbo 13B was every 30-40,000KM. Admittedly he drove it pretty hard, but he also took very good care of it. I'm around 35,000 a year at the moment. I've never heard of a rotory of any make or model making 300,000KM without new apex seals - probably possible if you drive it like a nana and service it every weekend though.