Mercedes-Benz W168 A170CDI 668942 95HP Bare Engine 668.942 79k miles, WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

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

Listing details

The offer applies to a bare engine.

The engine is sold without accessories (e.g. alternator, starter motor, manifolds, injectors, turbocharger, etc.).

Mercedes-Benz W168 A170CDI 668942 95HP Bare Engine is a proven diesel unit from the CDI family, designed for the compact A-Class model. Its moderate power, four cylinders, and diesel construction ensure economical yet sufficiently dynamic performance for daily use. This is a solution for drivers looking for a technically compatible engine for their Mercedes W168.

Specifications and technical data

• SKU: A6680109900
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6680109900
• Substitutable numbers: A6680109900, A 668 010 99 00
• Fuel type: Diesel
• Number of cylinders: 4
• Offset (ET):
• Category: Engines
• Mileage: 79 000

Technical characteristics of the unit

The A170CDI engine from the 668.942 series is a four-cylinder diesel unit designed for economical operation in urban and suburban traffic. The cylinder layout and diesel operating parameters provide a favorable compromise between fuel consumption and refinement. Thanks to its compact design, the engine fits well into the specific architecture of the W168 body, where the drivetrain is mounted to maximize cabin space.

The unit is adapted to work with the factory-fitted equipment of the Mercedes A-Class, which facilitates integration with the existing electrical system, cooling system, and controls. The Diesel fuel type promotes low costs per 100 km, especially with a calm driving style.

Purpose and compatibility

The offered engine is dedicated to the Mercedes-Benz W168 A170CDI 668942 95HP Bare Engine model, which originally used units from the 668.942 family with 95 HP. The design was developed specifically for the compact A-Class, so it maintains compatibility with factory mounting points, engine bay geometry, and factory wiring harnesses. As a result, installation in a vehicle originally equipped with this unit is orderly and predictable.

The engine belongs to the Engines category, meaning it is the main component of the drivetrain, responsible for generating torque transmitted to the gearbox and the drivetrain system. Four cylinders ensure even load distribution and good flexibility in typical RPM ranges.

Condition, mileage, and operational aspects

The unit is offered as used, with documented mileage visible in the technical specification. This level of wear is attractive for those who want to reduce repair costs compared to purchasing a new component while maintaining a reasonable reserve of operational life. The engine mileage allows for assessing the potential for further operation with proper maintenance.

Before installation, standard preparatory steps are recommended, such as changing the oil and filters, checking seals, and verifying the accessories to maximize the unit's capabilities and reduce the risk of unplanned downtime. For workshops specializing in the Mercedes brand, this is a well-known design, which facilitates diagnostics and service.

Benefits of using an original Mercedes engine

Choosing an original drivetrain unit for the W168 A170CDI allows you to maintain the structural integrity of the vehicle. Factory engine fitment to the installation, mounts, and controllers limits the need for modifications, which translates into shorter vehicle downtime in the workshop. Additionally, the operating characteristics intended by the manufacturer are preserved – both in terms of dynamics and fuel consumption.

The CDI family engine is valued for its reasonable fuel economy and good durability with regular maintenance. For users planning further operation of their Mercedes A-Class, installing such a unit is a way to restore full drivetrain efficiency without the need to change the car.

Drivetrain expansion and technical knowledge

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 drivetrain units, check the available parts in the Mercedes Engines category.

For a comparison of the operational characteristics of different drivetrain units and a better understanding of how engine failures affect the user's budget, it is worth reading the guide material on our blog: Troublesome BMW E90 engines: check what can ruin your budget!. It allows for a better assessment of the importance of proper selection and technical condition of the drivetrain unit in other brands as well.