Both automatic transmission and manual transmission have their own irreplaceable advantages. If you just want to buy an automatic transmission, you may as well see how to judge the quality of automatic transmission in a short time during the test run. Your personal experience is better than others. The following Mercedes Benz car maintenance to introduce how to quickly judge the quality of automatic transmission in the test.

一、静态体验

1、 Static experience

1.怠速体验

1. Idling experience

将车子打着火，观察水温表看发动机是否处于的工作温度，如果水温偏低，较缓慢行驶1-2公里后即可，这时候停车但不熄火，D挡保持刹车然后感受车身的抖动情况，根据自己的判断是否剧烈，之后切入N挡比较两种不同的情况下车辆抖动的情况差别，反复两次到三次。

Set the car on fire, observe the water temperature gauge to see if the engine is at the working temperature. If the water temperature is low, drive slowly for 1-2km, then stop but don't turn off the engine. Hold the brake in gear D and feel the shaking of the car body. According to your own judgment, cut into gear n to compare the shaking of the car in two different situations, Repeat two to three times.

二、对于机械挡杆来说即使是直排式的挡位，在切入不同挡位的时候也会有很明显的阶梯感，每个挡位都应该有很明显的位置，反馈在手上的感觉会很清晰但并不生涩，尤其要注意切入P挡的时候，很多做的不好的车会显得特别生涩。具有手动模式的车辆也可以将变速杆切入手动模式前后推动感受。

2、 For the mechanical gear lever, even for the straight-line gear, when cutting into different gears, there will be a very obvious step feeling. Each gear should have a very obvious position. The feedback on the hand will be very clear but not strange. Especially when cutting into P gear, many cars that are not doing well will be very strange. Vehicles with manual mode can also switch the gear lever into manual mode and push forward and backward.

二、动态体验

2、 Dynamic experience

1.中低速行驶急加速

1. Driving at medium and low speed, accelerating rapidly

大约时速40km/h左右的时候来一脚急加速，这时候可以大致判断出这台变速箱的相应速度，看从你油门到底直至变速器降挡所需要的时间是不是特别慢，普通的家用车虽然不会十分敏捷但也不会迟钝很久，否则就是变速器的匹配做的并不是很好，当然了这也看每个人的接受程度。

When the speed is about 40km / h, you can quickly accelerate. At this time, you can roughly judge the corresponding speed of the transmission. You can see whether the time from the accelerator to the downshift of the transmission is very slow. Although the ordinary family car is not very agile, it will not be too slow. Otherwise, the matching of the transmission is not very good, Of course, it depends on everyone's acceptance.

2.中高速行驶减速

2. Slow down at medium and high speed

大约60km/的车速（条件允许可以更高）中等力度踩刹车让车辆逐渐减速，好的自动变速箱在车辆的减速降挡过程中应该是很平顺的，说白了就是感受不到变速箱的存在就对了，如果有明显的降挡顿挫那说明这变速箱做的并不是很好。

At a speed of about 60km / min (it can be higher if the conditions permit), step on the brake with moderate force to slow down the vehicle gradually. A good automatic transmission should be very smooth in the process of deceleration and downshifting. To put it bluntly, it's right that you can't feel the existence of the transmission. If there is an obvious downshift, it means that the transmission is not doing very well.

3.从0起步缓缓加速

3. Start from 0 and accelerate slowly

这个跟上面的减速是一个道理，在平稳加速的时候一台好的自动变速器同样也不会让驾驶员感到它的存在。

This is the same reason as the above deceleration. When accelerating smoothly, a good automatic transmission will not make the driver feel it.

4.低速蠕行

4. Creep at low speed

自己可以刻意的放慢车速，大约20km/h左右，或者干脆找个堵车的路段，这条对于那些采用了双离变速器的自动挡车型尤为重要，在低速蠕行时匹配不好的双离合变速器在1/2挡之间会出现很明显的闯挡、抖动现象，虽然在很多人眼力这是双离合变速器的通病，但却是有做的好也有做的烂的，自己可以接受就好。

You can deliberately slow down the speed, about 20km / h, or simply find a traffic jam. This is particularly important for those automatic transmission models with dual clutch transmission. When creeping at low speed, the mismatched dual clutch transmission will have obvious gear rush and jitter phenomenon between 1 / 2 gears, although it is a common fault of dual clutch transmission in many people's eyes, But there are some good and some bad ones. It's good if you can accept them.