found on the adesa dealer handout...looks like its labelled a 3.0i. maybe they have pricing set on that data. has 9 records on carfax for those interested
5UMDU93456LL932153.0L I-6 MPI DOHC
N912006 BMW Z4 COUPE M
6G,5S,HT,AC,2WD,2P,Leather,PS,HSDP,AD,PST,PL,PW,CC ,
249529
2BLUE67,729K
GREEN LIGHT
http://www.docstoc.com/docs/94839692/Dealer-Handout
pg. 28