LEGO Technic vs. System. Which One Is Right For You?

What 29 years of building bricks taught me about these two major LEGO building systems…

The first-ever LEGO shop is opening in Ireland this week, and I am super excited. I’m expecting it to draw a massive crowd on the first few days, mostly existing LEGO fans like myself and Andrew Gribben. Part of said crowd though will undoubtedly be the curious newbies.

Just the other night I went on a date with a lovely lady who knew nothing about LEGO, which made me realise, there is a large enough group of people for whom the Danish toymaker doesn’t mean much or anything at all, yet with a shop on Dublin’s most famous shopping street (Grafton Street), many will feel compelled to walk in and stare at boxes of LEGO. Seeing at least two major building systems — System and Technic — won’t have a clue which one to experiment with, so in this article I’m going to answer some questions I know people might be asking themselves.

Are the two systems compatible?

One of the best things about LEGO has been for decades the fact that Duplo, System and Technic are all compatible with each other. In fairness, it would be very rare to see all three in a custom build, but System and Technic are very regularly mixed together in many System and Technic sets. Compatibility between the two is 100%.

Looking at the LEGO Orchid set launched in 2022, at first look you don’t think it’s anything but System pieces. Except you’d be very wrong for thinking that, as around half the pieces are actually Technic pieces. It’s a fantastic illustration of how well the two building systems can work together.

Should you start with one or the other?

My suggestion would surprise many LEGO fans. The typical message is that unless we’re talking about a very young child, everyone should start with System sets. I, for one, disagree. I think everyone should start with the set they feel most drawn to. Within reason, of course. Say a 7-year-old child wanting the Technic Lamborghini Sian is understandable, but they’ll get very frustrated building it as it’s huge, takes roughly 10 hours to build even for a LEGO veteran like me.

However, regardless of age, don’t push either building systems. If the LEGO Typewriter takes your fancy, go for that. If you prefer building the famous Central Perk Café from Friends, start with that. It’s just as appropriate as picking up the Technic Motorcycle or the McLaren Senna GTR.

I don’t really see any real benefit of starting with either System or Technic sets. Over time, you will find yourself spilling into both to some extent or another.

Do the age-ratings matter?

Yes, and no. LEGO is doing a decent enough job with suggesting what set is suitable for what age, but I think they’re also muddying the waters in a few ways, so let me simplify it down.

• If it’s LEGO System, any set that’s marked at 7, 8 or 9+, you can comfortably give a 6-year-old child. Trust me, they’ll figure it out eventually.
• Any System set is suitable for any adult.
• 18+ sets, be that System or Technic, are suitable for anyone over the age of 12. The 18+ does not actually refer to complexity as much as target audience, hinting it’s part of the “adults welcome” marketing. These sets typically tend to be quite costly, so there is an assumption that only adults would find the funds for purchasing them. We all know, though, that’s not always entirely true, and parents will often bond over sets like these with their teenage kids.
• Technic set age-ratings are a little more accurate, though in my view from the age of 7, any small and mid-size Technic set is suitable. I would reserve large and extra-large sets to the 10+ age-range.
• Any Technic set is suitable for any adult.

Aren’t some sets more complex than others?

Yes, that is true, but it’s a lot less about Technic vs. System. Technic sets are often seen as very complex builds, but that’s a misconception. The main focus of Technic sets is functionality, while System sets are more play, display and design-oriented. This makes neither more complex than the other. In fact, you’ll find that some System sets like the Typewriter has a fair bit of Technic complexity in it too. On the other hand, looking at Van Gogh’s Starry Night, the complexity is very much on the System side.

No LEGO set is truly complex. It’s a lot more about how much patience you have, as seemingly “complex” sets are broken down into smaller steps.

Is either more suitable for MOCs?

MOCs (my own creation) are something that many LEGO fans have done and continue to do. The original aim of LEGO was and still is to a large extent for people to take the set apart and build something new. Whether Technic or System is more suitable to create MOCs though is a fair question, and one that not enough new LEGO-interested people ask themselves.

Off the bat, I’ll say that neither is more suitable for MOCs. However, there is an element of truth to stacking bricks on top of each other being an easier entry-point to building your own creations. Somehow the relationship between the bricks, the potential each brick holds in building something entirely based on your imagination, is more obvious.

Having said that, that’s only true up to a point. System building also uses a lot of SNOT (studs not on top) techniques, which can quickly complicate an otherwise two-dimensional build.

When it comes to Technic MOCs, I find that the approach to building changes. Suddenly, you find yourself caring a lot more about certain functionality like steering, a particular type of suspension, various functions the build can perform, and everything else is kind of built around that.

It ultimately comes down to whether you’re a mechanically oriented person or not. If you are, Technic is actually the better avenue for your LEGO MOC journey.

Can you stay undecided?

Yes. Absolutely. Circling back to the original question whether the two systems are compatible or not, that 100% compatibility allows you to never ever have to really decide which system you prefer. I, for one, never did, and I enjoy System builds just as much as Technic ones. Many famous LEGO MOC creators are actually in the same boat, they just like LEGO, period.

There is of course a downside to being undecided, and that’s cost. Just loving LEGO without any clear preference for one or the other system will mean you’ll likely be buying more sets than otherwise, as your pool of choice expands massively. There are far less Technic sets than System, and many are quite hard to say no to, as the designs alone will squeeze the money out of your pocket.

Ultimately, it’s less about which system you go for, and more about what your budget can fit in. LEGO, if left unchecked, can become an addictive and expensive hobby.

Hi there! 👋

Recently, I started a new publication — Bricks n’ Brackets — dedicated to LEGO, tech and coding. It would mean a huge deal to me if you’d follow it, though only do so, if any of those topics pique your interest. You can also read more about why I started it and what my overall goal with it is. You can also join as a writer if you’d like, as long as you submit articles around those three topics. The publication also has a YouTube, Instagram and TikTok channel. Thank you, and may the gods of creativity and success guide your day!

Attila Vago — Software Engineer improving the world one line of code at a time. Cool nerd since forever, writer of codes and blogs. Web accessibility advocate, LEGO fan, vinyl record collector. Loves craft beer! Read my Hello story here!