Mercedes-Benz W203 200 Kompressor Complete Engine M111 111.955 E20 ML WARRANTY

Mercedes-Benz W203 200 Kompressor Complete Engine M111 111.955 E20 ML WARRANTY is a factory-spec powertrain unit with a mechanical supercharger, designed for the W203 generation C-Class models. Thanks to its complete set of accessories and four-cylinder configuration, it serves as a solid foundation for a professional engine replacement in Mercedes vehicles, ensuring structural consistency with the manufacturer's original design. This is a solution for users expecting a proven, OEM-compliant powertrain unit with predictable performance parameters.

Specifications and technical data

• SKU: A0030100800-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0030100800
• Substitutable numbers: A0030100800, A 003 010 08 00, A0030100900, A 003 010 09 00
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Technical characteristics and engine construction

The presented engine belongs to the M111 family, in the Kompressor version, which means it utilizes a mechanical supercharger. The four-cylinder inline layout provides a good balance between smooth operation and ease of maintenance. The unit was designed to run on petrol fuel, which translates into predictable behavior under load and compatibility with the factory control electronics in Mercedes C-Class models.

The engine is complete, which in practice facilitates the swap process – it minimizes the need to transfer accessories from the old unit and reduces the risk of component incompatibility. Design solutions typical for the M111 Kompressor are well-known in workshops specializing in the Mercedes brand, which promotes quick installation and subsequent servicing.

Purpose, compatibility, and application

The engine was developed for the Mercedes-Benz C-Class W203 200 Kompressor model and is dedicated to road applications where stable torque characteristics and predictable throttle response are important. The four-cylinder configuration works well with both automatic and manual transmissions used in this generation.

The unit is particularly attractive in situations where the existing engine has suffered serious mechanical damage or an economically unviable failure. Using a complete M111 Kompressor engine allows you to maintain the original driving character of the car without the need to interfere with the electrical installation or engine control system, provided the unit selection is made in accordance with the manufacturer's recommendations.

Condition, mileage, and benefits of installation

The offered unit comes from the secondary market and is classified as a used engine from the Engines category. The declared mileage allows for assessing the degree of wear in relation to the typical lifespan of the M111 design, which is important when planning further vehicle operation. In practice, this means that the user receives an engine that is not at the end of its life cycle, which promotes a rational cost-to-potential-mileage ratio.

Replacing it with a complete powertrain unit of this type is beneficial especially when the existing engine would require an extensive major overhaul. Using a ready-to-install, complete powertrain assembly reduces vehicle downtime in the workshop while maintaining technical consistency with the factory Mercedes specification.

Professional operational and service tips

After installation, it is recommended to perform a full package of start-up procedures: changing oil and filters, checking the cooling system, intake system tightness, and the correct operation of accessories. To maintain long-term efficiency, it is worth using high-quality oils and fuel in accordance with the manufacturer's recommendations, as well as adhering to service intervals.

If you are interested in a broader context of powertrain durability in premium cars and want to compare typical problems of different brands, an article describing critical engines in a popular competing model may be helpful – check out the analysis of faulty BMW E90 engines to better understand how the choice of a powertrain unit affects long-term operating costs.

For users interested in the longevity of the drivetrain in cars with the star on the hood, practical tips regarding accessories and service maintenance will also be useful – see the guide on engine reliability in popular Mercedes-Benz C-Class and E-Class models to optimize your maintenance plan and select the appropriate service parts.

Expanding the powertrain in Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as blocks, cylinder heads, or complete powertrain assemblies, check out the available parts in the Mercedes Engines category.