Mercedes Gearbox: E class, CLK, ML
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Facts on Mercedes Gearboxes
ZF Friedrichshafen AG is a leading worldwide supplier of driveline and chassis technology. With 122 facilities in 26 countries and approximately 55,000 employees worldwide, ZF provides gearbox components and systems to the automotive, commercial vehicle. ZF products include: automatic and manual transmissions for cars, trucks, buses and construction equipment; chassis components and much more.
In the 1960s, ZF began supplying transmissions to the major German automakers, including Mercedes and BMW, as well as Peugeot, Ford and Alfa Romeo. A popular automatic transmission (the 3 HP 20) was introduced in 1969 which was designed to be an easy swap with the company’s manual transmissions.
In 2001, ZF introduced the world’s first six-speed automatic transmission. Today, ZF produces around 1 million six-speed automatic transmissions annually. The company is also known for its truck and bus automatic transmissions. ZF gearboxes are the among the most commonly used in buses.
Among the most popular products for buses is the Ecomat series automatic transmission, introduced in 1980. With the rise in popularity of the semi-automatic transmission in trucks and buses, ZF introduced the Tronic.
7G-TRONIC is Mercedes-Benz’ trademark name for its seven-speed automatic transmission. This fifth-generation transmission was introduced in the Fall of 2003 on 8-cylinder models, and was the first seven-speed automatic transmission ever used on a production vehicle.
The 7G-TRONIC debuted on five different eight-cylinder models: the E500, S430, S500, CL500, and SL500. Since then, it has been applied to all eight-cylinder Mercedes-Benz models, and is also available on some six-cylinder models including the new 320 CDI engines (which uses a VTG turbo charged common rail diesel engine)
The company claims that the 7G-TRONIC can save up to 0.6 litres of fuel per 100 kilometers (depending on the car) and has shorter acceleration times and quicker intermediate sprints than the outgoing 5-speed automatic transmission.
The 7G-TRONIC has two reverse gear ratios. The winter mode, also recently named ‘comfort’ mode, starts out in 2nd forward and 2nd reverse. The transmission can skip gears when downshifting, allowing for quicker acceleration. It also has a lockup torque converter on all seven gears, allowing better transmission of torque for improved acceleration.
The transmission’s case is made of magnesium, a first for the industry, to save weight.
The 7G-TRONIC is the fifth-generation transmission for Mercedes-Benz.
The automaker has produced over eleven million automatic transmissions since 1959. About 65 percent of Mercedes-Benz C-Class sedans, wagons, and sport coupes are purchased with automatic transmissions. However, about 88 percent of Mercedes-Benz E-Class sedans and wagons are purchased with automatic transmissions, and automatic transmissions are standard on the Mercedes-Benz S-Class.
There is also the Mercedes-Benz 5G-TRONIC which is an electronically shifted 5-speed overdrive automatic transmission.
Other Mercedes Vehicles available and more.
W168, W169, W210, W211, W212, R170, R171, W163, W164, W460, W461