World Manufacturer Identifier · ISO 3780
UU3
ARO
Built in Romania
What WMI UU3 means
The first three characters of every VIN are the World Manufacturer Identifier (WMI). The code UU3 is assigned to ARO, with the country of manufacture Romania.
So any 17-character VIN that begins with UU3 was produced by ARO:
UU3ZZZ0000000000000
Decode the full VIN
The WMI only identifies the maker. To read the year, engine, plant and serial number, decode the complete 17-digit VIN with our free tool — then check which ECU it uses and what tuning services (DPF, EGR, AdBlue, DTC off, Stage) are available.
Open the free VIN Decoder →