It doesn't have a belt --- it has a chain
No. It has a timing chain.
no
I was on my research for replacing the timing chain for my own X3 2006. Bottom line, it needs not be serviced unless it's making a noise. It could last the life of the engine. Good Luck!
where is the transmission dipstick on a BMW X3
The 2011 BMW X3 has 24 valves.
The 2005 BMW X3 has 24 valves.
The 2010 BMW X3 has 24 valves.
The 2009 BMW X3 has 24 valves.
The 2006 BMW X3 has 24 valves.
The 2008 BMW X3 has 24 valves.
The 2014 BMW X3 has 16 valves.
The 2013 BMW X3 has 16 valves.