I agree with Eric that Blue Book values don't apply well to old Mercedes. Afterall, the book only covers vehicles less than 20 years old and the reason is that 20+ year old vehicles are considered classic and their values are too volatile to be printed in a book. So naturally some vehicles that are less than 20 but not too far from it already exhibit some of this volatility.

My 240D's KBB value is about $1000 but I bought it for $4200 because of its exceptional condition and low mileage and that's on Ebay. On the other hand, if you're the buyer you can use the Blue Book value to your advantage if the seller is desperate or doesn't know much.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL