LEGO Technic NASA Mars Rover Perseverance 42158 Advanced Building Kit for Kids Ages 10 and Up, NASA Toy with Replica Ingenuity Helicopter, Great

I bought this set because I've been waiting years for Lego to make another Mars rover set. This was my first technic build as well. The instructions were clear and simple and I had no trouble building it. There is really not much to not like about it. The "rocker bogie" suspension system is awesome looking when completed and the deck of the rover has a good amount of details. There are really only two things I find slightly disappointing with this build:1. The MMRTG fans are not really attached very well and get moved out of place easily.2. Percy's "head" lacks detail. I had to add the Service Loop to the mast which fills out the head better.Overall the set is well priced for the piece count and I am very happy to have this build on my shelf! I highly recommend ... MoreI bought this set because I've been waiting years for Lego to make another Mars rover set. This was my first technic build as well. The instructions were clear and simple and I had no trouble building it. There is really not much to not like about it. The "rocker bogie" suspension system is awesome looking when completed and the deck of the rover has a good amount of details. There are really only two things I find slightly disappointing with this build:1. The MMRTG fans are not really attached very well and get moved out of place easily.2. Percy's "head" lacks detail. I had to add the Service Loop to the mast which fills out the head better.Overall the set is well priced for the piece count and I am very happy to have this build on my shelf! I highly recommend for any Mars rover nut!

It took us forever to build but we were excited every time we finished a bag. It took us about a month to complete so it was at least 15 hours all together. The app was so helpful in putting it together. For smaller projects we usually use the included booklet but this manual was huge. My daughter and I loved building it together and we can’t wait our next Lego challenge. The worst part was trying to fix pieces on the inside once the shell was put together. I couldn’t keep the spinning panels on top from falling apart. That part in the 2nd pic should have been saved for last.

I'm "old" and been building since I was in kindergarten. So yes, very experienced. I own many many technical sets including all of the NASA ones.That said, I won't drone on and on about how cool, fun, unique, etc this set is - it's all of that! But I want to put the word out that there are a LOT of sub-components that are geared and must be fitted precisely for the vehicle to work properly. The issue is that the pieces WILL fit properly, but there is no indication that it is not in the exact required position until it is far too late to easily fix the issue. Everything is clipped together and overlapped in such a way that it is extremely difficult to remove prior sections to get at the issue.Again, it's a great set - but I'm finding it frustratingly easy to ... MoreI'm "old" and been building since I was in kindergarten. So yes, very experienced. I own many many technical sets including all of the NASA ones.That said, I won't drone on and on about how cool, fun, unique, etc this set is - it's all of that! But I want to put the word out that there are a LOT of sub-components that are geared and must be fitted precisely for the vehicle to work properly. The issue is that the pieces WILL fit properly, but there is no indication that it is not in the exact required position until it is far too late to easily fix the issue. Everything is clipped together and overlapped in such a way that it is extremely difficult to remove prior sections to get at the issue.Again, it's a great set - but I'm finding it frustratingly easy to mis-align portions of it.