The Mercedes 722.6, marketed as 5G-Tronic, is the 5-speed electronically controlled automatic transmission Mercedes-Benz introduced in 1996. It became the workhorse automatic across the entire Mercedes-Benz lineup for over a decade, paired with engines ranging from the M104 inline-6 through the M112 V6, M113 V8, and M275 V12. The 722.6 features adaptive learning electronics, which means the transmission control module (TCM) learns the driver's shift patterns and modifies shift points over time for smoother operation and better fuel efficiency. Inside the unit is a multi-plate clutch design that provides smooth shifts under both light load and heavy throttle conditions. The aluminum alloy housing reduces weight while providing structural integrity for the high torque applications it was designed to handle (up to roughly 500 ft-lbs in V8 applications).
The live page lists a 1996 donor year for this transmission. Important context: 1996 was the FIRST year of the 722.6 transmission, and at that time it was paired with the M104 inline-6 engine (in vehicles like the E320 W210 and S320 W140). The M112 V6 engine that the live page description references did not actually appear in Mercedes vehicles until model year 1998. So:
In most cases, swapping a 722.6 into the same vehicle family is plug-and-play once the transmission is mechanically installed and filled with the correct Mercedes ATF 134 FE fluid (MB 236.14 specification). The transmission control module (TCM) in the donor unit retains adaptive shift logic, which may take 100 to 200 miles of driving to re-learn for your driving style. Some vehicles may require ECU adaptation via Mercedes Star Diagnostic (SD Connect) or equivalent scan tool to clear stored adaptation values and resynchronize the new transmission to the vehicle's engine control module. We strongly recommend professional installation. Self installation is possible for experienced technicians with the right equipment (transmission jack, freight handling capability for the 175 lb unit, the correct fluid).
| Part Type | Automatic Transmission | 5-Speed |
|---|---|
| Mercedes Designation | 722.6 / 5G-Tronic |
| Alternate Designations | NAG1 (used in some Chrysler / Jeep applications during Daimler era) |
| Vehicle Application | Mercedes 320 series (E320 | S320 | C320 | ML320 | R320 | GL320 | CLK320 | SLK320 etc) |
| Year Range | 1996 to 2010 (specific year and engine confirmed at order) |
| Donor Year This Unit | 1996 per live page |
| Transmission Type | 5-Speed Automatic |
| Material | Aluminum Alloy Housing |
| Weight | 175 lbs |
| Fluid Type | Mercedes ATF 134 FE / MB 236.14 specification |
| Gear Count | 5 forward speeds plus reverse |
| Final Drive | External to transmission (located in differential or transaxle) |
| Shipping | Freight pallet only | 5 to 10 business days |
| Sku | vaz600 |
To make a claim, contact us within 15 days at (240) 301-0095 or support@vazautosolutions.com.
