If you are looking for a manual SAV, consider the E83 as well. They came in manuals too

https://www.bmwcca.org/ads/207991

That one is overpriced by a lot but you get the idea.

I'd consider the E83 maintenance woes to be less than E53. Having owned both, the E83 was very reliable! Same motor as the E53 3.0i as well (up until 2006 I believe)

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2004 BMW M3 Individual
2009 BMW E70 X5 35d
2011 BMW E70 X5 35d - Totaled
2009 BMW M3 E90 - SOLD
2006 E53 X5 4.8iS - SOLD
2002 E46 M3 Convertible - SOLD
2006 E46 M3 ZCP - SOLD
2011 E70 X5 35d - SOLD
2000 E39 ///M5 - SOLD
2003 E53 X5 4.6iS - SOLD
2006 E83 X3 3.0i MSport - SOLD
2000 E46 323Ci - SOLD