When I still had the power seats, passengers would almost never figure out how to adjust them, not even back-forwards
However when I bought the (manual) Performance seats, I expected that I would miss this feature a bit as a driver. But to be honest I don't. It's really only useful when you switch drivers oftenly.
Performance Seats, Exhaust, Splitters, Pedals, Steering Wheel / RB Turbos / M3 CF Roof / Brembo GT BBK 355/345 / Rollcage / Forge FMIC / Quaife LSD / Bilstein PSS10 / M3 Suspension Parts / Powerflex Bushings / Vorshlag Camberplates / RE Toe Links / LeatherZ Gauges / Extended M3 DCT Paddles / ER Sports OC / AR OC / Aux Radiator / AR DPs / Alpina TCU Flash / COBB Pro-Tune