I purchased my 740i the summer of 2007 with 122K, it now has 170k. Mechanically i have changed a suspension component ($250), brakes($1100) battery($150) and tires($1100) otherwise just oil service.
Recently it has began to slowly leak coolant. The reliability has been excellent and it still feels very much like a new vehicle. Preformance is Great but remember it is a large sedan The interior is beyond expectations. Exterior is beautiful with the sport package!!! Overall it is a great vehicle to enjoy for many years. I would never consider trading for anything else of similar value,