The best replacement for vin is chassis number.

The best alternatives to vin are rated as following:
★★★★★  chassis number
★★★  serial number
★  grand cru
★  hin
★  vcc
★  registration number
★  vout
★  bere
★  boeuf bourguignon
★  lichen sclerosus
★  dwayne
★  chassis
★  bière
  vain
  serial no
  engine number
  serial num
  vdd
  alexis
  chassis numbers

Your alternative for vin is not listed? Suggest!
Speaking about vin, one probably shouldn't forget about license plate.

Other search terms related to vin and their ratings are:
★★★★★ license plate
★ vehicle
★ license plate number
You have in mind a companion for vin and it is not yet here? Propose!



Google Trends

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vin
chassis number
serial number