Something is wrong with our Carens

There’s something unusual in our Kia Carens, particularly in its automatic transmission. After traveling for a few kilometers and the engine reached it normal temperature, I notice the following symptoms:

1. From full stop, the car is laboring to move forward.
2. At full stop, if the gear is shifted to either “R” or “D”, the car jerks - stronger at “R”.
3. At full stop or in motion, if the gear is shifted to Sports Mode, the number of gear appearing on the indicator is always 3 regardless of the speed and even at full stop. It can be shifted down to 2 and back to 3 but never to 1 and 4.
4. While running and the gear is shifting, the gear slips before engaging.

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