A transmission question
Hummers only have 4 speed automatics, the H2 also. While Jeep Cherokees have 5 and Mercedes Suv's have 7. Is the reason 4 speeds are more suited for hard off roading. With more gears you get less RPM's at highway speeds which improves mileage. I just wonder if 4 speeds are more durable for the trail and that's why Hummer does that.
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