It is on the driverside, I believe I have them adjusted properly. There have been a large number of complaints about the mirrors/blindspots. I imagine that there may be a very exact perfect position a person could be sitting and the mirrrors adjusted just so and then have no blind spot. I don think that is a realistic expectation for most drivers.

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1996 E320
2000 C230 Kompressor
1988 190e 2.3 - 225K miles, owned for 7 years. I cannot say enough good things about this car. Very well built, even at 225 it ran like new.