Olivier Gosse 
2006 BMW 5 Series Sedan 530i 4dr Sedan (3.0L 6cyl 6M)
My 4th BMW and the best one!
 This 530i is well designed and the overall reliability is good. Beyond 150K miles, I started having some oil leaks but it's all fixable. Over  150K miles. the original radiator was replaced, a rear window actuator replaced around 60 Kmiles and the regular brakes were replaced front and back every 30 to 40K miles. Spark plugs replaced every 100K miles. DTML pump was replaced around 90K miles. The coolant tank was replaced around 120K miles but this car is solid and performs well month after month. The starter was replaced at 148K miles as well as a front wheel(crack in the metal). The microfilter needs a change every 30K miles and the trunk actuator had to be replaced at 165,000 Miles.  It has 179K miles and it's still going strong! I religiously get an oil service every 7,500 miles + visual inspection. The external body still looks great but the car spends its nights in a covered garage. Total maintenance costs(incl. $3,800 100K warranty) = $18.425(incl. 4 sets of tires) up to date.