Try this
http://cgi.ebay.com/ebaymotors/06-07-Mazda-3-6-Disc-in-Dash-CD-Changer-OE-LKQ_W0QQcmdZViewItemQQcategoryZ38641QQihZ010QQitemZ200206336840QQrdZ1QQsspagenameZWDVW
I'm not sure if this unit got mp3. Else keep searching. It took me a week to get one, brand new in the box with mp3 for 98$.
19k miles on TR MS3 Sport. So far no issues except for the windshield cowl rattle when cold. Got that fixed under TSB.
BTW mine plays MP3s. (drive)
Got a 6CD OEM head unit with MP3 capability off eBay for 98$, brand new.
+1
Also I believe SI is a pretty neat looking car too. However my personal preference is a hatch for its utility. To me a hatch simply looks sportier and purposeful.
Thats a requirement by the Euro law. Here is the quote from wikipedia.
"European vehicles equipped with HID headlamps are required by ECE regulation 48 also to be equipped with headlamp lens cleaning systems and automatic beam leveling control. Both of these measures are intended to reduce the...