Considering a CPO 2013 328 i xdrive sport package that is a SULEV. I'm in Massachusetts where a large majority of BMWs sold are SULEV. Whar are the downsides to a SULEV if any? I've heard there used to be issues mostly regarding fuel pump replacement that prompted BMWNA to inact a 15 year 150,000 mile warranty. Apparently this was resolved several years ago. Thanks.