actually, the passenger side mirror is the larger of the two. this is to provide for a larger mirror in addition to a convex one resulting in an increased field of view.
as for the driver's side not being electrically adjustable, you don't have to reach across the car to adjust that mirror, therefore there really isn't a need to make them BOTH adjustable.
i know they're both adjustable on later models, but there really isn't a need for them to be. it's just an "added value"
'94 W124.036 249/040 leder; 8.25x17 EvoIIs
'93 W124.036 199/040 leder; 8.25x17 EvoIIs, up in flames...LITERALLY!
'93 W124.036 481/040 leder; euro delivery; 8.25x17 EvoIIs
'88 R107.048 441/409 leder; Euro lights
'87 W201.034 199/040 leder; Euro lights; EvoII brakes; 8x16 EvoIs - soon: 500E rear brakes
'70 R113.044 050/526; factory alloys; Euro lights