Because SCS changed the way were read, almost every trailer mod built for 1.5.2 crashed the game in 1.6.1. The game’s log file would fill with Missing accessory errors.
A new gameplay option was added to simulate fuel use based on driving style and cargo weight rather than a fixed distance-based average.
: The handling of addons, wheels, and interiors was overhauled to prevent "broken" truck states when players modified their vehicles.