The new Jetta feels awkward to drive

First of all, let’s talk about the idle speed problem. Idle speed is divided into hot car idle speed and cold car idle speed. When the outdoor temperature is very low, this is the cold idle speed after starting the car. At this time, the idle speed must be higher than usual, and the Jetta should be between 700-800. When the water temperature reaches 90 degrees, the car will start to idle when it is hot. At this time, the idle speed will be relatively stable and it is also the idle speed value calibrated by the manufacturer. Jetta should be around 700.

The idle speed of 600 you said is indeed on the low side after driving for a while. When the 4S shop measured the idle speed for you, the idle speed of 760 was also on the high side, but it was within the normal range. The idle speed value of a hot car should not change that much, and is basically a constant value for a car. You are now 160 times off, and you don’t know what the actual situation is. If the idle speed is indeed unstable, it is high and low. It is recommended that you go to the 4S store and ask the repairman to check it carefully. Because there are many causes of unstable idle speed, I won’t explain them to you. By the way, I would like to remind you that reinsurance vehicles can be claimed for free at 4S stores. The Jetta's fuel consumption is 60,000 kilometers in 2 years

The urban fuel consumption of the Jetta is 7-8, which is within the normal range. In the summer, the fuel consumption is 8-9 with the air conditioner on.

As for the starting problem, I feel that it is Novice oil separation problem. You can try it with an experienced driver. If the problem persists, go to the 4S store to check.