I found this snippet of info interesting regarding what Norway found when testing the K9 in the winter -
A single K9 was sent to Norway to join the competition. Operated by a sales team, the vehicle went through tests between November 2015 and January 2016. During the January winter test, the K9 was the only vehicle that managed to drive through meter-thick snow field and fire its weapon without any issue. Competing vehicles experienced engine troubles or broken parts.
The K9's engine was able to maintain heat overnight by simply covering the area with tarpaulin, a simple trick learned from operating experience, allowing the engine to ignite without failure the next day at an extremely cold temperature. The hydropneumatic suspension became a huge advantage for mobility, as its mechanism melted snow on mobility parts much quicker. The test result also impacted Finland and Estonia, who were invited to observe performances for their artillery replacement, to acquire the K9
Information like this should have a significant impact on our decisions on what to select......