How Often Should the Dual-Clutch Transmission Fluid in a Mercedes-Benz Be Replaced?

[DiMadeline]

Mercedes-Benz dual-clutch transmission fluid should be replaced every three years or 60,000 kilometers, whichever comes first. Signs that the transmission fluid needs replacement include vehicle shaking, gear shifting hesitation, transmission high-temperature warning on the dashboard, engine stalling, and unusual noises. The methods for replacing the dual-clutch transmission fluid in a Mercedes-Benz are as follows: Unscrew the drain plug at the bottom of the transmission to drain the old fluid before refilling. Remove the transmission oil pan directly to drain and refill the fluid: This method is more thorough than the previous one, as it removes impurities from the bottom of the oil pan. Use a circulation machine to replace the automatic transmission fluid: Dynamic fluid replacement with an intelligent circulation machine can filter and clean sludge and impurities inside the automatic transmission. Different vehicle models have different replacement intervals. Below are the replacement intervals for transmission fluid: Manual transmission: Manual transmission fluid is generally recommended to be replaced every three years or approximately 100,000 kilometers. Automatic transmission: Automatic transmission fluid is generally recommended to be replaced every two years or approximately 40,000 kilometers. Continuously variable transmission (CVT): CVT fluid is generally recommended to be replaced every two years or approximately 60,000 kilometers.

[StAlexander]

With over a decade of experience driving Mercedes-Benz vehicles, I know that dual-clutch transmission fluid changes are not to be taken lightly. Generally, Mercedes' official recommendation is to replace it every 4 years or between 60,000 to 100,000 kilometers, whichever comes first. The exact interval depends on the model and your driving habits—for example, frequent city traffic congestion can dirty the fluid faster, so I always change mine at 50,000 kilometers as a precaution. The benefits are numerous: aged fluid thickens, reducing lubrication, which can cause rough shifting, increased noise, or even gear damage, potentially leading to repair costs in the tens of thousands. While driving, I monitor the fluid's color—if it turns dark black, it's a red flag. Regular changes ensure buttery-smooth gear shifts and can extend the transmission's lifespan by over five years. It's a cost-effective way to save hassle and money while prioritizing safety.