Is it harmful for an automatic car to start at high speed?

Starting at high speed in this way is harmful to both the engine and the automatic transmission.

The injury is caused by the following reasons:

1, when starting, step on the accelerator. At this time, the transmission is in the first gear, the transmission ratio is small, the engine speed is high, but the output power is small, which will also make the transmission oil temperature rise faster. At this time, the lubrication effect of automatic transmission oil decreases and the wear increases.

2. If the parts in the automatic transmission wear too much, it will make the automatic transmission enter an "infinite loop", which will cause serious failure of the automatic transmission for a long time.

3. If L gear is not D gear when driving at ordinary times, the transmission will only switch between 1 and 2 gear, which will cause serious failure of the "wave burning box" for a long time.

Automatic gear, as the name implies, means that the driver does not need to manually shift gears, and the vehicle will automatically choose the appropriate gear according to the driving speed and traffic conditions. Generally, there are six gears in an automatic car, which are P, R, N, D, S and L from top to bottom.

Source: automatic transmission? Baidu baike