4G-TRONIC
The Mercedes-Benz 4G-Tronic transmission was produced from 1979 to 1996 in W4A 028, W4A 040 (both type 722.3), W4A 020 (type 722.4), and W5A 030 (type 722.5) variants. Abstract The 4G-Tronic transmission is a hydraulically operated four speed automatic without lock-up that replaced the similarly designed W3A 040, W3B 050, and W4B 025 family of automatic transmissions with the introduction of the W126 S-Class in 1979. In some models it is calibrated to move off in second gear to reduce "creeping" and provide a smoother ride, selecting 1st only if the selector is in "2" or in case of abrupt acceleration. Other calibrations have the transmission rest in 2nd gear and kick down to 1st as soon as the accelerator is touched but before the throttle is opened. In some V8 installations a small control unit activates the kick down solenoid when the brake pedal is released so that the car moves off in 1st gear. Other attributes of this transmission include ...
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Mercedes-Benz W202
Mercedes-Benz W202 is the internal designation for a compact sedan/saloon manufactured and marketed by Mercedes-Benz 1993–2000, as the first generation of the C-Class, now in its fifth generation. Replacing the 190 series/W201 in June 1993, the C-Class sedan was Mercedes' entry-level model until 1997, when the company launched the A-Class. Production reached 1,847,382 over model years 1994–2000. Background Development started on a replacement to the 190 series in October 1986, with design work commencing in 1987 under Bruno Sacco. By 1988, the first full-scale models were made, narrowed to two design directions by December 1988. The design by Olivier Boulay was chosen in 1989 and the production design was frozen in January 1990, subsequently patented on 19 December 1990. Rough prototypes went into testing in 1989, with first production design prototypes commencing testing in 1990. Engines The C-Class debuted with a complete lineup of multi-valve engines. The family o ...
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