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Mercedes-Benz Arocs 6x4 + Trailer - Sennebogen

Maker:  Conrad
Model No:  78172
Scale:  1:50
Review Date:  June 2024

Conrad Index
Low Loader Index

Cranes Etc Model Rating
Packaging   (max 10) 8
Detail   (max 30) 21
Features   (max 20) 14
Quality   (max 25) 20
Price   (max 15) 9
Overall   (max 100) 72%


Mercedes-Benz Arocs 6x4 + Trailer - Sennebogen Video. 
Sennebogen branded box.
Under the Arocs.
Trailer on its landing legs..
Deck posts fitted.
The deck is not extendible.
Loaded with a Sennebogen 830E.
Demolition boom as a load.
Smart branded truck.

This model is a Mercedes-Benz Arocs 6x4 with a five axle trailer. 

This model is in the colours of Sennebogen. 


The model comes in a Sennebogen branded box which holds the model within cardboard-backed foam. 

The review model had no defects or missing pieces.

Assembly is limited to attaching door mirrors and a roof aerial to the cab, and attaching the trailer to the tractor.


The tractor unit is a 6x4 Mercedes-Benz Arocs.  Underneath, the transmission and suspension components are detailed in plastic, with the steering functionally modelled.  The tyres are mounted on good looking wheels. 

The cab has a beacon light bar on the roof, and the Arocs grille looks convincing.  There are no number plates. The Sennebogen graphics are sharp.

Behind the cab the wheel arches on the rear wheels are plastic, but there are no coiled lines.  The rear lights have plastic lenses. 

The semi trailer is a five axle unit and there is very little plastic used on this model. 

The treaded tyres are mounted on small plastic wheels which look reasonable.  The deck has a nice textured surface, and the headboard at the front has a couple of spare wheels fitted, together with a set of wheel chocks. 

The edge of the trailer has a yellow hazard line painted down each side.  Two ramps at the rear are cast well to detail their structure. 

A set of deck posts can be fitted to each side of the deck edge although these are not a tight fit so patience is required to get them straight and looking right.


The tractor steering works very well, and a very hard lock can be obtained if desired. 

The cab does not tilt. 

The axles on the trailer all steer together in an impressive way which is also proportional in that the rear axles steer more than the front ones, and this works very well with the rear axle achieving the 45 steering angle of the real machine.  The axles also have a form of suspension. 

A surprise is that the semi trailer is not extendible even though the Doll trailer model it is derived from was extendible.  It is understood that Sennebogen decided not to have that functionality.  Additionally the gooseneck can be separated from the trailer by removing a plastic pin on the underside. 

The trailer has plastic support legs front and rear which can support it. The ramps at the rear fold down, and also have some sideways adjustment. 

Another interesting feature is that there are small plastic pull out horizontal extenders down each side of the trailer bed which can provide some additional support to wide loads.


This is a reasonable quality model which is robust. 

The paintwork and graphics are very good.


The model is moderate value for the quality and features offered.


This is a nicely presented model for Sennebogen.  The trailer is an old casting so the detailing is not up to modern standards, but overall it is a typically solid Conrad model.


The model was introduced in 2023.

Smart looking tractor.
No coiled lines are modelled.
Underneath the trailer. 
On the road.
Nice graphics.
Ramps lowered.
Loading using the ramps.
Good match for Sennebogen equipment.