Which are you trying to use the Lada Vesta in?
Move it to: ...\Steam\steamapps\common\assettocorsa\content\cars . Extract the .rar and locate the dlc.rpf file. Use OpenIV to place the folder in mods\update\x64\dlcpacks . Add the folder name to your dlclist.xml . For BeamNG.drive: Download Lada Vesta rar
Since the file is a .rar , you will need a tool like or 7-Zip to open it. For Assetto Corsa : Extract the folder from the .rar . Which are you trying to use the Lada Vesta in
Руководство по эксплуатации Vesta Sedan - Lada Download Lada Vesta rar