
BMW 118 transmission is Aisin's 6AT. Introduction to transmission: A device that changes speed ratio and direction of motion. Used in automobiles, tractors, ships, machine tools, and various machines to alter the torque, speed, and direction of motion transmitted from the driving shaft to the driven shaft under different working conditions. Gear-driven transmissions generally consist of a housing and several pairs of gears. Functions of the transmission: Changes the driving force and speed of the vehicle (shifting) without altering the engine's speed and torque; allows the vehicle to move in reverse (reversing); enables the engine to idle without stalling (neutral).

As a BMW 118 owner for several years, I'd like to talk about its transmission. The BMW 118 typically comes with an 8-speed automatic transmission, which operates very smoothly without any noticeable gear shifts, especially comfortable in urban traffic congestion. The fuel efficiency is also good, with an average consumption around 7 liters, making it worry-free even on long highway drives. I remember once driving in mountainous areas where the transmission responded super quickly, automatically adjusting gears according to the slopes—it was incredibly smart. This transmission is very reliable and rarely has issues, but if you frequently drive aggressively, it's recommended to check the transmission fluid every 60,000 kilometers to maintain optimal condition. Overall, it significantly enhances the driving pleasure and is highly recommended. Paired with this transmission, the BMW 118 is truly a great companion for daily commuting.

Having worked on quite a few BMW 118 models, I must say the most common issue is with the 8-speed automatic transmission. It features a reasonable structural design and clear shifting logic. The driving experience is smooth and quiet, but over time, you might notice some jerking, especially at low speeds, often due to aging transmission fluid or dirty sensors. For maintenance, it's best to change the oil every 50,000 kilometers to extend its lifespan. Compared to the manual version, which is rarer but offers a stronger sense of control and is more suited for enthusiasts, this transmission has good heat resistance, making it ideal for city commuting. It also boasts high fuel efficiency and moderate maintenance costs. In short, it's a solid choice, but regular maintenance is key to avoiding minor issues.

In the car enthusiast circle, discussions about the BMW 118 often highlight how exhilarating the manual transmission version is, with its smooth gear shifts and sheer driving pleasure. Unfortunately, it's quite rare nowadays. Most automatic variants feature an 8-speed design, offering quick response and quiet operation, while the manual mode still delivers strong handling feel. I've tested it on the highway—the acceleration is linear without being abrupt, complemented by an engine note that amplifies the sporty vibe. For daily city driving, it's fuel-efficient and hassle-free, with minimal maintenance worries. The transmission performs reliably, with few reported failures. If you value driving experience, this model is worth a try. Overall, it strikes a great balance.


