I assume it would be the 123s but if anyone has cruise on a 115 or earlier, I would love to hear about it.

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Rich Mason
Chapel Hill, NC
1990 300D 285k miles
1993 VW Cabriolet converted to 1.6 TD
1985 VW Westfalia 1.6 TD

My 76 has cruise control, albeit inoperative at this minute. Plans are underway for its resurrection in the distant future. . .

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63 220S W111
76 300D W115
2013 VW JSW TDI M6

previously-
73 280 SEL 4.5
86 300E 5 speed
2010 VW Jetta TDI M6

My '76 300D with 142,000 miles has cruise. Fully functional unless I lock the doors while driving.

Dave

The earliest (and only W115) Mercedes diesel to have cruise control was the 1975-1976 300D.

Chris

I have seen a few 115's with cruise but only 300's.
I do not have cruise in any of mine, 72-220d, 74-240d and two 76-240d's but I will be looking for a way to retro fit a system, any suggestions anybody?

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Ncnetman
1959 Chev 3100 Fleetside
1965 Mustang
1968 Torino GT fastback
1969 Ranchero
1974 240d 4-speed -for sale
1976 240d fresh paint- on hold
1978 300cd fresh paint and new rearwindshield rubber
1990 6.2 Suburban 194k-getting a 6.5 turbo
2008 Duramax Silverado
2015 VW Passat TDI

I just installed an aftermarket Rostra "Globalcruise" unit in my 84 300D. Works quite well. The control stalk is obviously non-MB looking but fairly unobtrusive. The unit is a "one box" install, simple wiring and a driveshaft magnet setup for speed sensing. All electronic, no vacuum servo controlled. Its a little slow to respond when you set it and on very gentle downgrades it can "hunt" or surge gently but this only happens in very specific situations. There is a gain control I have yet to mess with but it may alleviate this issue. Once the speed is set it locks it in, no variation at all. Cheaper than a rebuilt cruise amp from GDL that may or may not have solved my inop CC. Should be able to install in any car. RT

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When all else fails, vote from the rooftops!
84' Mercedes Benz 300D Anthracite/black, 171K
03' Volkswagen Jetta TDI blue/black, 93K
93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K