Technic

Mercedes-Benz G 500 PROFESSIONAL Line

A boxy Technic G-Wagon that actually drives, steers and shifts gears like the real thing.

4.3/5

Set 42177 · 2024

Pieces2,891

Minifigsn/a

Year2024

Set number42177

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The verdict

If you love Technic that mixes real mechanics with a body you'd actually display, this one nails both.

You get a working straight-6, four-wheel drive with diff locks, and steering that lines up dead straight, all wrapped in that unmistakable boxy G-Class shape. It's not cheap and there are a couple of fiddly bits near the end, but for the money it's one of the more satisfying licensed Technic builds of 2024. Grab it if you want function and looks in the same box.

Best for: Technic fans who want working mechanics and a display-worthy shape in one build

The full review

Let me tell you about one of the more likeable Technic releases of 2024. The Mercedes-Benz G 500 PROFESSIONAL Line is a 2,891-piece LEGO® set that pulls off something Technic doesn't always manage: it's a proper working machine AND a model you'd genuinely want on display. The real G-Wagon is famous for being a brick on wheels, all boxy angles and squared-off corners, and this set leans right into that. You end up with something that looks like the actual truck instead of a vague suggestion of one.

Under that boxy skin there's a lot going on. You've got a working straight-6 engine, four-wheel drive routed through three differentials, diff locks for the off-road stuff, and a pair of shifters behind the front axle. One switches between low and high torque, the other flips you between drive and reverse. The steering is the detail people keep coming back to: the wheel sits dead straight when the front wheels point straight ahead, which sounds small until you realize how often Technic cars get that wrong. The suspension is smooth too, and the whole drivetrain feels engineered rather than approximated.

Now the honest bits. This is a 249 dollar set, so it's a real commitment and not an impulse buy. A few builders have grumbled that the hood hinges drift out of alignment and open a little awkwardly, and there's a bit of flex in the beam that holds the dashboard and windshield together. If you were hoping the off-road PROFESSIONAL badge meant a working winch, it doesn't have one, which is a fair thing to be mildly annoyed about. And with an 18+ Technic model like this there are no minifigs, so don't expect a little driver.

So who's this for? If you're the kind of builder who loves seeing gears mesh and axles turn, and you also want a finished model that looks sharp on a shelf, this hits both marks better than most. The Brickset community has it sitting at a solid 4.3 out of 5, which tracks with how much people seem to enjoy it. If you're purely after raw function-per-dollar or you want playable minifig action, look elsewhere. But for a display-and-function Technic build that celebrates a genuinely iconic vehicle, this is an easy one to recommend to a mate.

The parts story

What the build is actually like, and the pieces worth knowing about.

The build has a nice rhythm to it. The chassis and all the mechanical guts come together fast, and by around bag 6 you've basically got a rolling, shifting, steering skeleton done. From there the pace changes and the rest is bodywork, which is where the boxy G-Class shape slowly appears panel by panel. It keeps you engaged the whole way because there are neat little tricks tucked in throughout, like the steering drivetrain that keeps the wheel centered and the service-position hood that props up like the real truck. It's a meaty build that rewards you at both ends: mechanical satisfaction first, then the styling payoff.

For parts nerds there's real stuff here. The set introduces new molds including a Technic axle and pin connector angled at 168.75 degrees, a bigger 87.9 x 36 off-road tyre, a fresh wheel cover, and a new crank disc and piston combo that lets LEGO build a tighter, smaller engine. On top of that, around thirty elements showed up for the first time in the new Reddish Orange (color 402), from beams to panels to fairings, so recolor hunters have plenty to grab. On value, it works out to roughly 8.6 cents per piece, which is actually decent for a licensed Technic model and cheaper per part than something like the McLaren P1.

Fun facts

01The set celebrates 45 years of the G-Class, which first rolled off the line in Graz, Austria in 1979 and has barely changed its boxy silhouette since.
02The real G-Wagon exists partly because the Shah of Iran suggested Mercedes build a rugged off-roader, and it later won the grueling 10,000km Paris-Dakar rally in 1983.
03It was designed by Milan Reindl and uses a brand new crank disc and piston system that lets Technic pack a working straight-6 into a smaller space than earlier sets could manage.
04Around thirty parts debuted in the new Reddish Orange color inside this set, so it's a small treasure chest for builders who chase fresh recolors.