Lego Liebherr R 9800 Excavator - 42100

Updated: Mar 22

The Basics

  1. The Liebherr R 9800 Excavator has 4109 pieces

  2. Contains Technic Control + app

  3. Powered by 2 advanced Smart Hubs and 7 motors

  4. Hyper realistic replica

  5. The excavator is 15" high, 25" long and 10" wide

Check it out at Amazon here

Lego Mania Fan Review

Welcome. It is ok you're not lost. This is just the incredible world of advanced Lego builds Technic Powered Up style. This is simply stunning and outrageously incredible. It is the sci-fi of Lego and the mechanical beast of the Technic products. Everything about this model is overload. It is a stunningly detailed replica of the Liebherr R 9800 and deeply intricate beyond my vocabulary. Motors upon motors, apps upon apps, this monster is just as technical as the rocket that reached the moon. Mobile app operated, this excavator can move, turn and grip with severe complexity. Real to the movement of the excavator, this product embodies everything we understand of engineering. What more is need to be said? Take the time and just look at this model and you can appreciate the deep level of detail and careful consideration put into this build.

High-end excavator replica model

High-fidelity replica model, operated via the Lego Technic Control+ app and powered by 2 advanced Smart Hubs and 7 motors. Rotate the superstructure, operate the boom and bucket, drive forward, backward and recover movement using a smart device.

Check out this awesome video of the excavator in action.

From the Manufacturers

Get ready for a colossal LEGO® build and play experience with the 4,108-piece LEGO Technic™ Liebherr R 9800 Excavator. Developed in partnership with Liebherr, this replica model is operated via the intuitive LEGO TECHNIC CONTROL+ app and powered by 2 advanced Smart Hubs with 7 motors. The sophisticated app technology enables super-precise movement and amazing functionality, while delivering endless authentic digital play combinations via 4 different control screens with cool graphics. The Multi-function control screen enables users to drive the machine in all directions, rotate the superstructure, extend and raise the boom, open and tilt the bucket, play realistic sound effects and get real-time feedback, such as boom position, power usage and drive distance. With the One-touch screen, users can use drag patterns to control the boom, arm and bucket, while the Custom-built movements screen enables them to choose pre-set commands or record the model’s actions to create complex sequences of movements. And, with the Challenges & achievements screen, users can complete challenges to unlock reward badges.

Explore innovative engineering

This excavator model features the LEGO® TECHNIC™ CONTROL+ app for a more immersive and realistic play experience and hours of fun.

The app-controlled LEGO® Technic™ Liebherr R 9800 Excavator is operated via a smart device with 4 alternative control screens. Go to for a list of compatible smart devices.

Multi-function control: Drive forward, reverse, steer, rotate the superstructure, extend, raise and lower the boom, open and tilt the bucket and get model feedback, such as boom and superstructure position, power usage and drive distance.

Super-precise control

One-touch control: Select an on-screen drag pattern and see the excavator respond to your command.

Custom-built movements: Use pre-set commands or record the model’s actions to create complex sequences of movements.

Challenges & achievements: Complete challenges to unlock reward badges.

Replica of the Liebherr R 9800 Excavator with an array of true-to-life features and functions, finished with an authentic color scheme and cool sticker detailing.

Advanced Smart Hubs

Includes 3 XL Motors, 4 L Motors and 2 Bluetooth-controlled Smart Hubs.

Smart Hubs feature Bluetooth Low Energy (BLE) connectivity, activation button, 6 axis sensor (3 gyro and 3 accelerometer sensors) and 4 connectivity ports.


The app allows users to connect to multiple hubs, ensuring precise and true-to-life movements.

Download the app from the App Store or Google Play. Ask your parents’ permission before going online.

This excavator toy requires batteries (not included). Please refer to the product packaging for type and quantity. This LEGO® Technic™ construction toy introduces LEGO builders to advanced elements of engineering. Not compatible with the Power Functions systems.

Liebherr R 9800 Excavator measures over 15” (39cm) high, 25” (65cm) long and 10” (27cm) wide.

Customer Reviews of This Build

This model is coming in hot at a rating of 4.9 out of 5 in Amazon and 4.5 out of 5 on Lego. This is an extremely complex build that requires time, patience and a lot of problem solving. Please make sure your device is compatible with the Technic Control+ system to avoid disappointment. IPad is the customers preferred option for using this app and ensure you have followed the instructions strictly to ensure each part is correctly placed.

In Summary

I wouldn't expect anything less than complex for this model. This is a challenge for everyone and requires at least a foundational knowledge of more difficult Lego builds. This being said, that is where the reward is held, accomplishing something that is largescale, visibly impressive and completely functional. The ability to build part by part a model that is bluetooth operated with a range of complex capabilities is why Lego is such a fascinating product. We absolutely love this model as it represents everything that we love about Lego, the limitless abilities that Lego presents on the imagination.

Keep on Building

Much Love

Lego Mania x

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