Robert 
2002 BMW 5 Series Sedan 525i 4dr Sedan (2.5L 6cyl 5M)
Buy the extended warranty
 Bought the car with 19K on it.  within a week it had a complete electronic failure and lost all systems. Fortunately it was under warranty.  Since then, have has several expensive repairs, expansion tank, radiator, Alternator, secondary cooling fan, and miscellaneous other repairs. Always over $500 per visit.  Nice car but always something breaking.