116s didn't have power seats. They were heavier and less aerodynamic. They came with old tech/look Becker Europa radio. Looks better wearing Bundts.

W126 300SDs had more luxurious amenities. Quieter, nicer driving, with less Turbo lag and more power. Better Aerodynamics, roomier interior. Stereo head unit advanced enough that with better speakers and a good amp you have a decent stereo. Look silly wearing Bundts, even though they came as original Equipment. 1986 - '87 SDL Models have fragile aluminum head engines.

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1979 240D, 4spd manual, Power Sunroof, manual windows, 147k miles, Pastel gray/Black MB Tex.
1991 300D 2.5 - Smokes like it's on Crack!