from my research I think that I should be OK because the car would have shown the problem before 126K miles. I prefer a higher mileage car in this case.
back to my main question (which was not reliability)
what are the motor codes of each 540i and what are the design difference etc???
02 BMW X5 // 97 BMW 328iC // 89 325is w/ M50 swap // 06 Audi A3 w/ APR stage II