Some include the year and model of their car(s) in their signature which is useful (and some include a whole lot more!). Some of the other forums make provision for vehicle type under your member username. Perhaps this would be a worthwhile addition to this site. Obviously it still does not help where a member has more than one car listed in their signature. I fully agree that as much relevant detail as possible about the car helps when posting a question. Better still if the topic of the thread includes the car model or engine type as appropriate.

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107.023: 350SLC, 3-speed auto, icon gold, parchment MBtex (sold 2012 after 29 years ownership).
107.026: 500SLC, 4-speed auto, thistle green, green velour.
124.090: 300TE, 4-speed auto, arctic white, cream-beige MBtex.
201.028: 190E 2.3 Sportline, 5-speed manual, arctic white, blue leather.
201.028: 190E 2.3, 4-speed auto, blue-black, grey MBtex.
201.034: 190E 2.3-16, 5-speed manual, blue-black, black leather.