Customer reviews from LEGO
LEGO - Technic Liebherr R 9800 Excavator 42100
Average customer rating
4.6 out of 5
4.6
(28 Reviews)
Open Ratings Snapshot
Rating breakdown 28 reviews
5 Stars
21
4 Stars
4
3 Stars
1
2 Stars
2
1 Star
0
93%of customers recommend this product. 
(
26 out of 28
)
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Customer Reviews for LEGO - Technic Liebherr R 9800 Excavator 42100
Customer Rating
5 out of 5
5
Awesome machine!
on October 5, 2021
Posted by: SmallScorpion032
The Liebherr R 9800 Excavator is one of my favorite sets. It took a LOT of time to build, and there were several times when I put a piece in backwards or upside down and I had to backpedal a few steps to undo some mistakes. But if you stay focused and pay close attention to the instructions, it’s very doable and extremely satisfying when you finish. IThe functionality of the set is far beyond any other LEGO set I’ve built, and it’s an absolute joy to play with it. Highly recommended, in spite of the rather high price tag.
I would recommend this to a friend!
Written by a customer while visiting LEGO
Customer Rating
4 out of 5
4
A great build
on September 12, 2021
Posted by: mikefb
The instructions were mostly clear and the few mistakes I encountered were easy to fix. The testing steps went well and I ended up with a functioning model. A great job by the mechanical engineers at LEGO! A few negatives for me were: 1. The 100 round studs used to simulate a load are a total waste. They are impossible to pick up. Go on the Internet and see many videos where reviewers end up hand picking up the studs and placing them in the bucket. I ended up using plastic Easter eggs. They are smooth and don't get hung up on each when you try to pick them up. Ping Pong balls would probably work too.
2. The controller app could use some work. I would like to see the hubs being turned on through the app instead of the buttons. Also, the four buttons on the control screen used to create saved movements are too close to the tread controls and are too easy to hit when controlling the treads. A different layout moving those four buttons elsewhere would be nice.
All in all pleased with the model and I look forward to more TECHNIC builds.
I would recommend this to a friend!
Written by a customer while visiting LEGO
Customer Rating
5 out of 5
5
Liebherr
on May 24, 2021
Posted by: TomSquadDriver
An absolute pleasure to build, and operation of the set is flawless. There were some challenging moments, such as routing the motor wires is often hard to see.
The only complaint I have is the App. There are 4 orange buttons, and if you accidentally hit one, it prompts you to set one button actions, and once you hit that button, you're stuck in a loop of trying to set the things up with no way out. I find myself just exiting the entire app and restarting everything.
Pictured is my Liebherr with a few more hours of build time remaining. The bucket is the last thing to add.
The controls are great as they allow feathering of each movement, so fine tuning the rotation to be perfectly straight is easy.
All and all I very much enjoyed this build. Every time I buy a very expensive set such as this, I fight with myself over whether or not it's worth the money. Taking into consideration the people who thought this up, built it, tore it down, documented where each and every piece went, and drew up incredible instructions, I have to say yes. The quality of each Lego part has not changed over the last several decades, and that is a wonderful thing. Once I get my hands in a pile of parts, I know it was worth every penny.
I would recommend this to a friend!
(click to see the video)
User submitted video
Response from LEGOBy JaneLEGO® Customer ServiceMay 25, 2021
We appreciate your feedback and are happy you find the build enjoyable! If you ever have issues or questions concerning the app, we're here to help at LEGO.build/Service-BV!
Written by a customer while visiting LEGO
Customer Rating
5 out of 5
5
Being a kid again
on April 27, 2021
Posted by: TheKY13O9
When I was a kid I LOVED Lego. It was all I ever wanted as a gift. I got made fun of a lot and eventually, I stopped. I years later finally remembered that Lego was a thing and that, now being an adult, I can buy them. I have bought a couple of other sets, but I decided to go all out and buy this. It has been one of the stupidest, but next financial decisions I have ever made. I am so happy with my purchase. It is the most joy I have felt in a long time. There is many more to come. Thanks.
I would recommend this to a friend!
Written by a customer while visiting LEGO
Customer Rating
4 out of 5
4
on January 23, 2021
Posted by: Mike7999
Nice set. But it would be nicer if I got book 2. I got two books one
I would recommend this to a friend!
Written by a customer while visiting LEGO
Customer Rating
5 out of 5
5
Love my Liebherr & Volvo
on November 26, 2020
Posted by: LegOlympian
Everything works fine as well as no problems with the build ! Love them both ! Hey Lego, can you built a model with Caterpillar or John Deere branding? We in the USA are big Lego fans and we can associate with that more than Liebherr (but we know Volvo cars mostly, not construction equipment). Great fun overall !!
I would recommend this to a friend!
Written by a customer while visiting LEGO
Customer Rating
5 out of 5
5
Second Technic Build
on October 26, 2020
Posted by: Pepster64
I have to say the LEGO Liebherr R 9800 Excavator Technic 42100 build was pretty fun build. It was challenging, but not too challenging where it causes too much frustration. The only slight complaint that it is a bit on the tad expensive side, but being a LEGO fan it's still worth it. I thought I had a missing piece, but found out that I had accidentally started building the last part before I was finish building an earlier section. I guess that is how eager you get to finish the build. This is my second Technic build, but not my last as I bought the Volvo hauler as my next build.
I would recommend this to a friend!
Written by a customer while visiting LEGO
Customer Rating
5 out of 5
5
Great Lego
on September 27, 2020
Posted by: Cranky
I was skeptical to buy this lego at first because of the price and size of it. I ended up buying it and once I seen the box it came in I knew I was in for a surprise. This lego was a fun and satisfying one to build it to me a little longer than I thought but everything in it is very advanced. Everything actually moves and works together and I think it’s great using a phone to control it now. Very satisfied with my purchase.
I would recommend this to a friend!
Written by a customer while visiting LEGO
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