Mercedes-Benz 5G-Tronic transmission

5G-Tronic
Overview
Manufacturer Daimler AG
Chrysler Group LLC
Production 1990–Present
Body and chassis
Class 5-speed longitudinal automatic transmission
Chronology
Predecessor 722.5 & Mercedes-Benz 4G-Tronic transmission
Successor Mercedes-Benz 7G-Tronic transmission

The Mercedes-Benz 5G-Tronic (also called 722.6) is an electronically shifted 5-speed overdrive automatic transmission with torque converter lockup (typically in gears 3,4,5) and 2-speed for reverse. It replaced the older 722.3 / 722.4 4-speed 4G-Tronic transmission and its 722.5 5-speed derivative.

It was replaced by the Mercedes Benz 7G-Tronic 722.9 transmission introduced in 2003. This turned out to be a very lengthy process stretching out over nearly a decade. Due to its high torque capacity (up to 1000 Nm) and lower cost, it was still retained for turbocharged V12 engines, four-cylinder applications and commercial vehicles for many years. It is still being built for niche applications (e.g. Sprinter with gasoline/CNG M111 engine, Jeep Wrangler, etc.).

In Chrysler applications this transmission is identified as the New Automatic Gearbox Generation One, or NAG1.

Specifications

Gear ratios

Mercedes-Benz Transmissions
Gear12345R1R2 Engines
5G-Tronic (W5A330/Small NAG)[1]3.9512.4231.4861.0000.833-3.147-1.93 4 and V6
5G-Tronic (W5A580/Large NAG)[2]3.5952.1861.4051.0000.831-3.167-1.926 V8's and V12's

Special operating modes

Winter Mode

Activated by a toggle switch, Winter mode sets the gearbox to start off in 2nd gear, both in Drive and Reverse. This is designed to reduce wheelspin on icy surfaces.

Speedshift (2001-)

Speedshift is a performance feature set for the Mercedes-Benz transmissions which includes manual mode and active downshifting. When cornering at high speed, the transmission maintains the same gear above a certain lateral acceleration level. It can also automatically downshift before overtaking.

It was first used in 2001 Mercedes-Benz C 32 AMG[3] and 2001 Mercedes-Benz SLK 32 AMG.[4]

AMG Speedshift (2002-)

A version with mechanical lock-up of the torque converter from first gear and steering-wheel-mounted shifter. AMG Speedshift is also used in 7G-Tronic transmission.[5]

It was first used in 2002 Mercedes-Benz E 55 AMG, S 55 AMG, C55, CL 55 AMG.[6]

AMG Speedshift R

A version used in Mercedes-Benz SLR McLaren. It includes three manual modes.

Applications

See also

References

  1. ↑ <https://www.scribd.com/embeds/92643386/content?start_page=1&view_mode=list&access_key=key-7h437wiv215r2tv8d93>
  2. ↑ <https://www.scribd.com/embeds/92643386/content?start_page=1&view_mode=list&access_key=key-7h437wiv215r2tv8d93>
  3. ↑ C 32 AMG: High-performance saloon with a high-torque, six-cylinder supercharged engine
  4. ↑ SLK 32 AMG: 354 hp V6 - the new leader among the compact roadsters
  5. ↑ The new Mercedes-Benz SLK-Class: Celebrating its world premiere at the Geneva Motor Show
  6. ↑ Mercedes-AMG GmbH launches V8 Kompressor initiative: up to 368 kW/500 hp for the E-Class, S-Class and CL-Class
  7. ↑ de:Jeep Grand Cherokee
  8. ↑ de:Jeep Wrangler
  9. ↑ Chrysler Crossfire
  10. ↑ de:Chrysler 300 (2004)
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