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i think its to let the engine warm up. because all the cars i have driven seem to avoid overdrive gear until the engine warms up. Witch makes sense because higher rpms keep the oil pressure high so the cold oil witch is hard to pump will reach all components of the engine. it probably helps the transmission too but I'm not to sure about that one. but i don't believe its a defect, unless its stays in 3rd gear forever ever at very high rpms, witch you should really avoid on a cold engine.

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14y ago

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