From just a bit of unevenness to real off-road, snow, and mountains, this stroller goes through everything! The only thing we couldn't get through was deep but melted snow uphill.
The seat is spacious enough, even for a three-year-old. Inclinable carrycot. So many extras - like the integrated cup holder. Super wide hood. Large basket with a high weight capacity. The handbrake was a great help. I really find this stroller very good. I had a different - four-wheeled one before, and for outdoor use, this is so much better.
As far as disadvantages go: it's large (with the Peugeot 5008 it's ok, but my Fabia was too small for it, we had to remove the front wheel, which is actually rather easy); it's on the heavier side; the three-wheeled chassis is not that stable sideways on a steeper hill.