My car would not pass the smog test. Took it in to a mechanic who said the balance shaft needed to be replaced. Cost: $5000 Apparently this is a problem which Mercedes will not recall despite numerous consumer complaints. He told me that it was not worth fixing as the car is probably not worth more than $5000. Most comparable cars are priced at 5k, but they have 125+ miles on them.
Question: Is it worth fixing? My car is a 2006 Mercedes E350 with less than 50k miles and in good shape.