Mercedes X class, same model was tuned by Alt Tune

2020 Mercedes X Class

X250D – 2.3L Diesel  – Siemens SID309 ECU

The Challenge

We are in this article going into how tuning the Mercedes X class can revive this failed project. The X250D is equipped with a 2.3L Renault-developed turbo diesel engine. The engine is controlled by its Siemens SID309 ECU.

Mercedes X class is Mercedes’s attempt to get in on the pick-up truck/ute marked. Mercedes, in cooperation with the Renault-Nissan-Mitsubishi alliance, developed the X class. The consequences of this alliance have left a lot of people disappointed in the vehicles they purchased. If you are one of those people, keep reading, because we have the solution to your problem.

The Solution

The X class’s hidden power can be unlocked by flashing its ECU with a custom power tune. This improves the overall driving experience by increasing the power and torque and improving the throttle response. We did all of this using Alientech KESS3. By custom tuning the Mercedes X class the vehicle can be adjusted to your needs.

We also offer a solution for those facing issues with their emission systems. By fine-tuning the emissions settings in the ECU to align with the vehicle’s specific tune, you can significantly enhance your vehicle’s performance. In conclusion, tuning the Mercedes X class can be the key to restoring the pleasure of driving a Mercedes once more.

Increased Power And Torque


Increased Power


Increased Torque

Further benefits

Increased Power and Torque

Increased power and torque result in safer over taking and easier open road driving. Throttle response is also increased.

Years of Development

We have been tuning the Renault 2.3L turbo diesel engines for years, and understand how they work as well as the limitation on factory hardware.

Emissions solutions

We have solutions for emission systems such as disabling the Exhaust gas recirculation (EGR), Diesel particulate filter (DPF), Selective Catalytic Reduction (SCR) (Adblue) and associated DTC fault codes.

So, if you’re looking to take your Mercedes X Class to the next level, don’t hesitate to reach out to us! Our dedicated team is ready to unleash the full potential of your vehicle and make your driving dreams a reality!

Tuning Enquiry

"*" indicates required fields

City and Country*
This field is for validation purposes and should be left unchanged.

Related Case Studies