Unboxing a box with over 4,600 building blocks remains a special moment for any builder. When you open the heavy box of the CaDA Audi RS6 Avant (C61515W), you immediately realize that this is a long-term project. With an extensive chassis, a working V8 engine, and a recognizable station wagon body, this set promises dozens of hours of building fun.
But how does this 1:8 powerhouse actually build in practice? We'll take you through the complete building process.
Preparation and instruction manuals
In the box, you'll find two thick instruction manuals and dozens of numbered bags (divided into phases 1 to 8). The building system works as you're used to with major building block brands: you only take out the necessary bags per phase, which keeps your tables tidy.
The manuals are clearly structured. New steps are clearly indicated with colored borders, and for tricky transmissions, the guide uses 1:1 scale images to show exactly which axle or gear to use.
Phase 1 & 2: The foundation and Quattro technology
Building starts with the base: the bottom plate, the rear differential, and the driveshaft. Almost immediately, you're confronted with the most complex part of this set: the mechanism for the variable height adjustment of the suspension.
Assembling the suspension requires precision. Because the suspension later needs to be able to screw the entire car up or down via a rotary knob, the gears must be placed exactly according to the book. A small error in an early step affects the entire system. It requires your full attention, but when the rear axle smoothly springs up and down for the first time, it immediately gives a sense of satisfaction.
Phase 3 & 4: V8 engine block and interior
Next, the work moves to the front and the interior. Under the hood, the characteristic V8 engine rises. When you turn the rear wheels, you can see the black pistons in the block moving along.
This is followed by the construction of the cognac-brown interior. The contrast of this warm color with the dark body quickly comes into its own during construction. Elements such as the adjustable seats and the sleek dashboard are built separately and then clicked into the chassis as a single unit.
Phases 5 to 8: The bodywork and the iconic nose
From the second half of the build, the RS6 takes shape. Where with many sports cars you mainly build round arches, the streamlined station wagon model requires a clever combination of Technic beams and system bricks.
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The doors and tailgate: All doors are built separately and fitted with a solid hinge construction so that they close tightly without sagging.
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The Audi grille: The front is a joy to build. The angled placement of various building blocks creates the aggressive and angular RS look.
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The wheels: Finally, you mount the wheels with the official Continental tires. Clicking on the wheels completes the transformation.
The final verdict on the building process
Building the CaDA RS6 is not a quick project to do in between. It is a challenging, technical build that requires considerable precision and patience — especially with the complex gear transmissions of the chassis.
The fit of the bricks is consistent, the clamping force is excellent, and the end result is a very heavy, detailed scale model that you will look at with great pride after the last step.
Ready to put this challenging project on your building table yourself? Check out the Boldons webshop for the CaDA Audi RS6 Avant and our handy display setups to give your finished build a beautiful place.
