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Sunday, March 15, 2026

Review: LEGO Technic 42173 – C Model – Old-Time Tow Truck by alter-lego

The LEGO Technic 42173 C Model – Old-Time Tow Truck by alter-lego is a fantastic alternate build that really shows how much potential the parts in this set have. It feels like a proper Technic model rather than just a simple alternate build.

The design is excellent, with great proportions and clever use of the available parts. It captures the look of an old-style tow truck very well while still packing in a good number of working functions.

Build Experience

The instructions are clear and easy to follow. During my build I made one small mistake by mixing up two connectors, but that was entirely my own fault rather than any issue with the instructions. Overall the build process was enjoyable and flowed well.

Functions and Features

  • Hand-of-God steering, which works smoothly and fits the scale of the model well.

  • A 4-cylinder engine that is geared up so the pistons move at a satisfying speed when the truck rolls.

  • Opening hood and doors, adding a nice touch of realism.

  • A rear tow attachment that both raises and extends using a gear mechanism, and it looks great as well as being functional.

Design & Potential

One of the best things about this model is that it feels like a great base for future modifications or improvements. The structure is solid and there’s plenty of room for experimenting with additional mechanisms or detail.

Overall

This is a great C-model—well designed, feature-rich, and very satisfying to build. If you have LEGO Technic 42173, this alternate tow truck is absolutely worth building.











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