Mercedes W169 A150 W245 B150 M266 E15 266920 Complete Engine 266.920 WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The warranty covers the engine itself; engine accessories are covered by a 30-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a complete engine.

The engine comes from a right-hand drive (RHD) vehicle. The wiring harness is not compatible with left-hand drive (LHD) vehicles and requires replacement or modification.

Mercedes W169 A150 W245 B150 M266 E15 Complete Engine is a complete gasoline powertrain from the M266 family, designed for A-Class and B-Class models. Its moderate mileage and four-cylinder design make it an attractive option for drivers looking for a proven engine for professional repair or replacement in their Mercedes. By maintaining the factory powertrain architecture, the engine allows for the precise restoration of the vehicle's original performance parameters.

Specifications and technical data

• SKU: A2660100000-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2660100000
• Substitutable numbers: A2660100000, A 266 010 00 00, A2660100100, A 266 010 01 00, A2660109800, A 266 010 98 00, A2660107600, A 266 010 76 00
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 48296

Purpose and compatibility

The presented engine belongs to the Engines category and is dedicated to Mercedes A-Class W169 generation (A150 version) and B-Class W245 generation (B150 version) vehicles. The unit comes from the M266 E15 family, which means it retains the architecture and installation method characteristic of this design in Mercedes compact models. As a result, it serves as a proper base for replacing the factory powertrain without the need for modifications to the body structure or the drivetrain.

Technical characteristics of the unit

The M266 E15 engine is a four-cylinder, gasoline powertrain designed for daily use in both urban and extra-urban traffic. The use of gasoline fuel promotes smooth operation, good throttle response, and predictable performance, which is important for both private and fleet drivers. The four cylinders provide a balanced compromise between dynamics and fuel economy, and the design of this engine series is well-recognized by workshops specializing in the Mercedes brand.

A significant advantage of this unit is its complete nature – the engine serves as a ready-to-install base to replace a worn or damaged unit, which facilitates service planning and reduces vehicle downtime. Moderate mileage favors further operation provided that appropriate service procedures are followed after installation.

Practical application and benefits of installation

Replacing the powertrain with a complete M266 E15 engine in A150 and B150 models allows for the restoration of proper drivetrain operation in situations where repairing the existing engine is unprofitable or technically difficult. This type of solution is particularly beneficial when the goal is to:

• restore the factory engine performance characteristics without structural modifications,
• maintain compatibility with the vehicle's original control systems and equipment,
• reduce vehicle downtime in the workshop thanks to the installation of a complete unit.

The four-cylinder gasoline engine fits well with the needs of users expecting smooth operation, predictable fuel consumption, and simpler service maintenance compared to more complex designs. For workshops, this means easier diagnostics and access to proven installation procedures.

Why choose a used Mercedes engine

Powertrains from the M266 family used in Mercedes A-Class and B-Class are well-known on the secondary market, which translates into the availability of service knowledge and spare parts. Choosing a used, complete engine allows for a significant reduction in repair costs compared to purchasing a new unit, while maintaining functionality consistent with the vehicle manufacturer's requirements. Additionally, moderate mileage increases the potential for further operation after proper installation and replacement of basic service materials.

If you want to better understand how to safely and consciously approach the purchase of a used engine, selection procedures by OEM number, and the real cost differences between new and used components, it is worth reading the expert guide Why it is worth buying used gearboxes and engines – facts instead of myths. This is a practical supplement to your knowledge when planning a powertrain replacement in your Mercedes.

Expanding work in the powertrain area

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

Choosing a complete engine from the M266 E15 family for W169 A150 and W245 B150 models is a solution that allows for restoring vehicle efficiency in an organized and technically consistent manner. For workshops, this means a predictable installation process, and for the user – the possibility of continued vehicle operation while maintaining the driving character typical of compact Mercedes cars with a four-cylinder gasoline unit.