we had 2003 MATRIX base model w/ 4 speed auto , for the 4 years ( or was it 5 ) w/ 55,000 miles of ownership never an issue in performance ( rattles different story , fixed those myself ) . It averaged 32 m.p.g. overall during the period we had it . That included studded tires , cold weather , snow , rain , ice , and plenty of hills . The best it got was 35 m.p.g. during a full week of very hot weather . I would buy another in a snap of the finger , but now have payment for '07 PRIUS . Our local dealer had a '07 MATRIX XR 5 speed w/ side impact air bags , fogs , A.B.S. , etc. for about $ 16,500 , which is darn good price . As for 5 speed I would think you'd get an average of 34 or 35 m.p.g. , depending on how you break it in and driving hasbits . We drove at various speeds and kept under 3 r.p.m.s and 65 as much as possible for 1 st 3,000 miles . You could always switch to full synthetic oil or blend after break in and change out gear oil to synthetic and possibly bump up the m.p.g.s and lower the engine noise as well . GOOD LUCK