Here is the list of new vehicle units added (it has been cut in V2-2.1.3):
– Forklift
– Combine Harvester
– Sweeper
– Tractor
– Wolverine ATV
– Yard Truck
– Casalini M14 -appears only if you own DLC Italy and mostly only inside Italy (since v.2.0.1)
– Imprion city bus (since v.2.1)
– Mercedes-Benz Turkish articulated city bus -appears only if you own DLC Road to Black Sea (since v.2.1)

Game version: tested in 1.53

Credits:
PikPikker