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、靜態體驗

1、 Static experience

1.怠速體驗

1. Idling experience

將車子打著火，觀察水溫表看發動機是否處于的工作溫度，如果水溫偏低，較緩慢行駛1-2公里后即可，這時候停車但不熄火，D擋保持剎車然后感受車身的抖動情況，根據自己的判斷是否劇烈，之后切入N擋比較兩種不同的情況下車輛抖動的情況差別，反復兩次到三次。

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、對于機械擋桿來說即使是直排式的擋位，在切入不同擋位的時候也會有很明顯的階梯感，每個擋位都應該有很明顯的位置，反饋在手上的感覺會很清晰但并不生澀，尤其要注意切入P擋的時候，很多做的不好的車會顯得特別生澀。具有手動模式的車輛也可以將變速桿切入手動模式前后推動感受。

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、動態體驗

2、 Dynamic experience

1.中低速行駛急加速

1. Driving at medium and low speed, accelerating rapidly

大約時速40km/h左右的時候來一腳急加速，這時候可以大致判斷出這臺變速箱的相應速度，看從你油門到底直至變速器降擋所需要的時間是不是特別慢，普通的家用車雖然不會十分敏捷但也不會遲鈍很久，否則就是變速器的匹配做的并不是很好，當然了這也看每個人的接受程度。

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.中高速行駛減速

2. Slow down at medium and high speed

大約60km/的車速（條件允許可以更高）中等力度踩剎車讓車輛逐漸減速，好的自動變速箱在車輛的減速降擋過程中應該是很平順的，說白了就是感受不到變速箱的存在就對了，如果有明顯的降擋頓挫那說明這變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.從0起步緩緩加速

3. Start from 0 and accelerate slowly

這個跟上面的減速是一個道理，在平穩加速的時候一臺好的自動變速器同樣也不會讓駕駛員感到它的存在。

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車速，大約20km/h左右，或者干脆找個堵車的路段，這條對于那些采用了雙離變速器的自動擋車型尤為重要，在低速蠕行時匹配不好的雙離合變速器在1/2擋之間會出現很明顯的闖擋、抖動現象，雖然在很多人眼力這是雙離合變速器的通病，但卻是有做的好也有做的爛的，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.