LEGO Technic 42180 Mars Exploration Rover

Both Mars rovers are part of the Technic series and were released in 2023, designed for space enthusiasts and LEGO builders aged around 10 or 11 and older. The Mars Exploration Rover offers a more complex build with 1599 pieces compared to the Perseverance model's 1132 pieces, making it a more detailed and potentially challenging project. Both sets are made from plastic and share the same brick-based construction, fitting well within the space theme. The slight difference in recommended minimum age reflects the complexity and piece count variation between the two. Overall, the Mars Exploration Rover is better suited for experienced builders seeking a more intricate model, while the Perseverance might appeal to those looking for a slightly simpler yet still engaging build.