Mercedes introduced its new 5-speed automatic transmission in 1996, replacing the older 4-speed models. The transmission was used on some models in Europe until 2020, which really speaks to its reliability and durability. In the US diesel market, it was in the E-class, the Jeep Grand Cherokee WK, the T1N Sprinter, and the NCV3 Sprinter … Continue reading 722.6 or the NAG1?