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Yesterday I was driving a C280 from Mercedes, since my mom took her car for tune up. It came with a 5-speed transmission with manual shifting. I was driving in third gear when I saw a red light up ahead. I released the gas pedal and started to let the car cruise, when I remembered that engine braking can help slow the car down, so I shifted to second gear, the rpm went from 2000(in third gear) to about 800(in second gear). Then the rpm raised to 2600 rpm and a strong dragging force was felt, it felt like I was braking. The rpm continued to drop to about 800(idle speed) as I slowly braked to a stop. I believe that the strong dragging force is because the car doesn't rev-match when it downshifts. Lucky that the car was a AWD, so it didn't lock-up the rear wheels. Now going back on topic, I haven't seen any car in GT4 that when I downshift without giving it any gas, the rpm would go to idle speed and then rise up to the rpm it is suppose to be for that vehicle speed. Shift lock is caused by the dragging force when you don't rev-match when downshifting.
This is some thinking I have done, relating real life experiences with GT4. Since I haven't ask any professionals about this, so I'm not sure if I'm totally right.
This is some thinking I have done, relating real life experiences with GT4. Since I haven't ask any professionals about this, so I'm not sure if I'm totally right.