The 2.5i is VERY underpowered in my opinion and the 2004 did have alot of rattle issues (note the large amount of 2005 my changes they have made) If this is the ONLY BMW in your price range, get it, it's better then nothing, but I would consider the fact they have had a heavily subsidized lease and frequent dealer cash so you should be able to get more for your money

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The Present:
2014 Audi Q5 TDI Prestige
The Past:
2013 Lexus GS350
2013 VW Golf TDI
2007 BMW X5 4.8i LOADED & Loved
2009 VW Jetta
2008 VW Touareg VR6
2005 BMW X5 3.0i
2005 BMW Z4 3.0i
2004 BMW X5 3.0i
2003 BMW 325i
2000 Ford Explorer Eddie Bauer 4x4