
BMW e34 has an 8-speed transmission. How the transmission works: The transmission is essentially a gearbox containing multiple gears. The driving gear (connected to the engine via the clutch) receives power from the engine to drive the driven gear (connected to the wheels through the final drive and driveshaft), thereby propelling the wheels. Each gear position corresponds to a pair of driving gears - engaging a specific gear means that particular gear pair connects to transmit power. Automotive transmissions: There are two main types: manual and automatic. Manual transmissions primarily consist of gears and shafts, achieving speed and torque variation through different gear combinations. Automatic transmissions (AT) comprise a torque converter, planetary gears, and a hydraulic control system, utilizing hydraulic power transmission and gear combinations to achieve speed and torque variation.

I've been into cars for many years, and the BMW E34 commonly came with either a 5-speed manual or 4-speed automatic transmission. From my personal experience, the 5-speed manual version of the E34 offers direct and crisp gear changes, delivering immense driving pleasure. The automatic version mostly uses a 4-speed transmission, providing smooth and reliable shifts, making it ideal for daily commuting. Why was it mostly designed this way? Due to the technological limitations of the 1990s, the 4-speed automatic struck a balance between cost and reliability. Modern models often feature 8-speed or more, but the E34's transmission is mechanically simple, cheap to maintain, and parts are easy to find. Regularly checking the transmission fluid is crucial—changing it every 50,000 kilometers can prevent jerky shifts. It might be a bit thirsty on fuel, but that classic feel is unparalleled.

As an E34 owner, I've been driving a 520i manual for 10 years with a 5-speed transmission that's never had major issues. Quick off-the-line response and stable highway cruising. The automatic models usually have 4 speeds – test drove a friend's 525i, decent comfort in stop-and-go city traffic. Transmission fluid needs frequent changes, otherwise cold starts are difficult in winter. The E34's transmission is built tough, no fancy tech, just pure robustness. If buying used, focus on checking shift mechanism smoothness. Overall, this setup was the benchmark in its day, easy and hassle-free to maintain.

The BMW E34, as a classic model, has an interesting transmission history. It was typically equipped with a 5-speed manual or 4-speed automatic transmission. The manual version was commonly paired with base engines, while the automatic often used ZF's 4-speed system. Cars in the 1990s pursued simplicity and practicality, unlike today's plethora of intelligent gears. Although not as efficient as modern transmissions, they excelled in reliability and durability. During maintenance, pay attention to aging oil seals to avoid troublesome leaks. In terms of driving experience, the gear shifts are direct and responsive, embodying the craftsmanship spirit of that era.


