The future life of the car depends on how it was treated in the past. Neglected maintenance and repairs lead to MAJOR problems down the line. If the car does not have any or too few records, I would offer a lot less money for it. You might need the money in the long run. I had an 87 300E, and I purchased it with about 130K on it. I had it for 2 years, and it needed A LOT of repairs. The transmission, overheating, and a host of other rough running issues. I later sold it with about 146k on it. By then, I had already fixed the car to 95% perfection. I had a shoebox filled with receipts of parts and repairs I made to the car. Some work still had a warranty on it. Needless to say, the new owner is pretty happy with the car. The moral of the story:You need some form of documentation of repairs made to a car.