LEGO Technic App-Controlled Cat D11 Bulldozer Review (LEGO)

LEGO Technic App-Controlled Cat D11 Bulldozer
What It Is

The Cat D11 Bulldozer is 3854 pieces, and will take the average builder 10-11 hours to build. Luckily, there are multiple instruction books, to break up the monumental task before you. The build, like with many technic sets, is complex, so take your time. Seriously, it takes 10 hours for a reason! Plus, it will all be worth it to have everything in its proper place. This behemoth takes 6 AA batteries, which are not included. Our reviewer recommends placing them in the battery case ahead of time, as it can be a little nerve-wracking to insert batteries after construction.

Once done, the Cat D11 is massive! LEGO keeps upping the ante with the size of their sets. The vehicle is a joy to look at. There is detail everywhere you look, from platforms, to railways, to an un-deployed side ladder, opening doors, and more; for real, this bulldozer is chock full of detail. As a display piece, if you can find a shelf big enough, it's marvelous, and definitely one of the most visually pleasing sets we've ever seen, especially for a technic set. Now for the main event, download the LEGO Technic Control + app, open the door and press the red lever on the bulldozer. This detail is very nifty! Follow the prompts, connect, and wait for the (admittedly long) calibration sequence, and you'll be ready to doze! The controls are complex enough to be fun, but simple enough to grasp immediately. You can adjust the blade up, down, forward and back, move the ripper up and down, and raise and lower the ladder! The Cat drives slowly but steadily, and has very responsive controls. It doesn't roll on its own, but that's totally understandable, given that it's a construction vehicle.

Is It Fun?

This set is so much fun! The build is a challenging test of building endurance and precision, and the final product is a blast to play with in the app, and a delight to simply admire on a shelf.

Who It’s For

The LEGO Technic Cat D11 Bulldozer is an excellent activity for any adult LEGO Technic fan, or a particularly astute and attentive older teen. LEGO themselves recommend this set for builders 18+.

What To Be Aware Of

- The only thing holding back this set from a perfect score is the hefty price tag. At around 12 cents per piece, it sounds more fair. Our reviewer believes that the kit is well worth the price, but that the price is, unavoidably, an objectively big expenditure.

  • Fun

  • Repeat Play

  • Assembly & Instructions


    6 AA batteries required