There are many examples of 200K+ X5 4.4i's out there. Maintenance is obviously key. I kept mine 02 X5 4.4 sport to 154K and runs strong. Needs small things as expected. I bought an e70 x5 4.8i 2010 a while back and kept the E53 to drive back and forth to Florida and to haul my dog around. Trips to Florida are less frequent now so I will let her go as soon as I get the minor things repaired. Cv boot and drives door windows sticking when it's all the way down. Otherwise its been very reliable since day one.

Many like the E53 driving characteristics better than the E70's and I must agree. The E53 drives better but with sport on my E70 it handles better but doesn't drive better. Makes sense? Tranny shifts etc are better on E53.