At what speed is the 4AT transmission most fuel-efficient?
2 Answers
4AT transmission is most fuel-efficient at 110KM/h. Here is a detailed introduction to the advantages and disadvantages of AT transmissions: 1. Advantages: The operation of AT transmissions is simpler than manual transmissions. This type of transmission is more suitable for beginners. Moreover, while driving, you basically don't need to consider factors like gear shifting, as the computer collects signals to shift gears automatically. 2. Disadvantages: The planetary gear set brings the issue that AT transmissions generally have higher fuel consumption. Additionally, if the planetary gear set is not well-tuned, it can easily cause a jerky feeling during gear shifts, making the driving experience less comfortable. Similarly, the structure of AT transmissions is relatively complex, making maintenance costs significantly higher than those of manual transmissions.
I've been driving for many years, especially older models equipped with 4AT transmissions, and I've found that the most fuel-efficient speed range is between 70 to 80 kilometers per hour. At this speed, the transmission can stably engage the higher gear, keeping the engine RPM around 2,000, which is the most efficient. If the speed is too low, say below 50 km/h, the transmission might still be in a lower gear, dragging the engine down and increasing fuel consumption. On the other hand, if the speed is too high, like above 100 km/h, increased wind resistance makes the car less fuel-efficient. In my daily driving, I prefer smooth acceleration and minimal hard braking, which allows a 4AT-equipped car to easily achieve optimal fuel efficiency on city highways or national roads. Also, remember to change the transmission fluid regularly to maintain smooth operation and avoid unnecessary wear and increased fuel consumption.
