DIY Guide: Building a Lego RC Car

DIY Guide: Building a Lego RC Car

Lego and remote control cars are two hobbies to enjoy for any age group. Combining the two would not only increase the fun, but it would also get your creative juices flowing. Building your very own Lego RC car might take some time, but it is worth the effort. It’s a unique way to combine the world of remote control cars with the endless possibilities of Lego building. With a little bit of time and effort, you can make your own Lego RC car that can move and race around just like a traditional RC car. All you need are basic materials such as Lego bricks, wheels, motors, a remote control unit, and a battery. Building your own Lego RC car is a great way to get creative and make something of your own that you can play with and show off. It’s also a great way to bond with family members, especially if you have a few Lego and RC car enthusiasts in the family.

Gather Parts

To make a Lego RC car, you will need to gather a few materials. Here are the things you will need:

  • Lego bricks
  • Remote Control unit
  • Wheels
  • Motors
  • Battery

You can find these items at your local toy store or online retailers like Amazon or Lego stores. It’s important to have all the necessary materials before starting so that you don’t have to interrupt the building process. Make sure to gather all the required parts before proceeding with building your Lego RC car.

Is there a remote control Lego car?

Yes, there are remote control Lego cars available. Here are some popular options:

  • The LEGO Technic Remote-Controlled Stunt Racer set that comes with a remote control and can perform stunts
  • The LEGO City RC Tracked Racer set that can be controlled with a remote control and features tracks instead of wheels
  • The LEGO Speed Champions 1974 Porsche 911 Turbo 3.0 set that includes a remote control and can be driven forward, backward, left and right

You can find these remote control Lego cars on the official Lego website or on popular retail websites like Amazon.


Constructing a Lego RC car requires a bit of time and patience. Here are the steps:

  1. Start building the car using your Lego bricks.
  2. Attach the wheels to the bottom of your Lego creation.
  3. Attach the motors to the wheels and secure them in place using more Lego bricks.
  4. Connect the battery and remote control to the motors.

Did you know that Lego was founded in 1932 by Ole Kirk Christiansen in Denmark? The name “Lego” is derived from the Danish words “leg godt,” which means “play well.” Today, Lego is a popular toy brand around the world, loved by both children and adults.

Lego RC Car Building Kit

For those who want an easier path to building a Lego RC car or are just starting, Lego has created a building kit, the “LEGO Technic WHACK! 42072 Building Kit With Pull Back Toy Stunt Car, Popular Girls and Boys Engineering Toy for Creative Play”. This building kit is a great way to get started with building and programming Lego robots. Here is what is included in the kit:

Material Quantity Description
Lego bricks 135 pieces Includes Lego Technic bricks that make building easier.
Remote Control 1 piece Has a range of up to 33 feet and uses Bluetooth controls.
Motor 1 piece The motor allows the car to move and adjust speed.
Battery 1 piece The rechargeable battery powers the car for approximately 30 – 60 minutes when fully charged.

With this kit, building a Lego RC car becomes much easier and faster.

Can you build a LEGO car?

Yes, you can definitely build a LEGO car! In fact, LEGO has a wide range of car-themed sets available for all ages and skill levels. Some popular ones include:

  • LEGO Technic Chevrolet Corvette ZR1
  • LEGO Speed Champions Ferrari F8 Tributo
  • LEGO Creator Expert Ford Mustang
  • LEGO City Monster Truck
  • LEGO DUPLO Town Tow Truck

These sets come with detailed instructions and pieces that are specifically designed for car-building. Additionally, there are also many online resources and communities dedicated to LEGO car building, such as the LEGO Car Blog and Brickset. So whether you’re a beginner or an experienced LEGO builder, building a LEGO car can be a fun and rewarding activity.


Programming a Lego RC car can seem intimidating at first, but with the right tools, anyone can do it. Here are a few steps to follow:

  1. Start by downloading the free software.
  2. Connect your computer to your Lego RC car using a USB cable.
  3. Use coding blocks to program your car’s movements.
  4. Test your code and adjust as necessary.

Scratch is a popular programming tool for Lego RC cars, and it’s free and easy to use. Here are a few tips to keep in mind when using Scratch:

  • Start with basic programming concepts and gradually work your way up to more complex tasks.
  • Use the Scratch community to connect with other Lego RC car enthusiasts and learn from their experiences.
  • Consider investing in online courses or workshops to improve your coding skills.

If you’re looking for more information and resources for programming your Lego RC car, check out the following websites:

LEGO Boost

LEGO Boost is a website dedicated to providing beginners with resources and tutorials for building and programming their own Lego robots. They have a variety of projects and challenges to choose from, as well as online courses and workshops.

EV3 Lessons

EV3 Lessons is another excellent resource for programming your Lego RC car. They offer free tutorials and lessons that cover everything from basic programming concepts to advanced techniques. They also have a forum where you can connect with other Lego RC car enthusiasts and ask for help or advice.

How to Program a Lego Robot?

To program a Lego robot, follow these steps:

  • Design the robot on the Lego Digital Designer software to determine the layout of the motors and sensors.
  • Download and install the Lego Mindstorms EV3 software.
  • Create a new program and select the appropriate robot, sensors, and motors.
  • Use the drag-and-drop programming blocks to create a sequence of commands for the robot to follow.
  • Test the program on the robot and make adjustments as necessary.

For more detailed instructions and tutorials, you can visit the official Lego website or check out online courses such as Udemy’s “Lego Mindstorms EV3 Brickmaster: Complete Course.”


Sometimes, even after careful construction and programming, your Lego RC car may encounter some issues. Here are some common problems and how to troubleshoot them:

The car doesn’t move

  • Check to see if the battery is charged.
  • Make sure the motors are properly attached and wired.
  • Ensure that the wheels are secured to the motors.

The car moves in the wrong direction

  • Check to make sure that the motor wires are correctly attached to the remote control.
  • Ensure that the engine is properly wired and attached to the wheels.
  • Check your programming to see if there are any errors or conflicts.

If you encounter more complex problems with your Lego RC car, you can find help and advice from the following resources:

Lego Mindstorms Forum

The Lego Mindstorms Forum is an excellent resource for troubleshooting and advice. You can connect with other builders and programmers who have experienced similar problems and get help from those who have found a solution. The forum also provides access to tutorials and other valuable resources.


BrickLink is an online marketplace for buying and selling Lego parts. It’s a great place to search for specific pieces that you may need to replace. Additionally, the forum section of the website is a great place to ask for advice or see if other builders have encountered similar problems.

Why is my LEGO remote not working?

Here are some possible reasons why your LEGO remote is not working:

  • The batteries may need to be replaced.
  • The LEGO Power Functions receiver could be out of range or blocked by an obstacle.
  • The remote or receiver might not be set to the same channel or frequency.
  • The signal could be disrupted by other electronic devices in the area.

To troubleshoot the issue further, refer to the instruction manual or contact LEGO customer support. Additionally, you can visit the LEGO website for more information about the different remote-controlled LEGO sets and their specifications.

Additional Tips

Here are some additional tips to help you build a successful Lego RC car:

Choose the Right Motor and Battery Combination

The type of motor and battery you choose will greatly affect how fast and powerful your car is. Consider these tips when selecting the right components:

  • A higher voltage battery will allow for more speed, but will also drain faster.
  • Choose a motor with a higher RPM (revolutions per minute) for increased speed.
  • If you plan on doing off-road vs on-road driving, take into consideration the terrain the RC car will be running on.

Understand Programming Fundamentals

To create a truly unique Lego RC car, you’ll want to manipulate the movements and controls beyond the basic programming templates. Consider these resources to learn more about advanced programming techniques:

  • Codeacademy offers coding tutorials and courses that give a deeper understanding of how programming works.
  • The YouTube channel “Sariel’s LEGO Workshop” offers great tips and techniques on building and programming LEGO models.
  • The official LEGO site offers LEGO MINDSTORMS software for free download that features a visual programming tool to get you started.

Remember, building a Lego RC car takes time, patience, and practice. Don’t be afraid to experiment with different designs and programming techniques to create your perfect RC vehicle.

How do RC cars turn?

RC cars turn using a combination of the front wheels and the differential at the back of the car. When you steer the car, the front wheels turn in the direction you want to go, which changes the angle of the differential at the back. This causes the car to turn.

The amount the car turns depends on how sharp the turn is and how fast you’re going, among other factors. Experienced drivers can use the way the car turns to make more precise movements, such as drifting around corners or taking tight turns at high speeds.

If you’re interested in learning more about RC cars and how they work, there are many websites and products available that can help. Look for resources that focus on your specific type of car, such as off-road buggies or drift cars, to get the most relevant information.


Building a Lego RC car is a fun and rewarding activity that can offer hours of entertainment. With the right materials, programming skills and technique, you can create a car that is uniquely yours. Remember to have fun with the process and don’t worry if the first attempt isn’t perfect. Building a Lego RC car takes time and practice; so, keep experimenting until you get the results you want.


If you need further assistance building an RC car, check out these additional online resources:

  • BrickLink – an online marketplace for buying and selling LEGO parts
  • LEGO MINDSTORMS – the official LEGO product offering a complete robotic framework for building and programming LEGO-based robots
  • LEGO Ideas – a platform where users can share their own creations, including RC cars

So, what are you waiting for? Start building your own Lego RC car today, and have fun while doing it!