How do you get a new 306 diesel car key when you've lost the master?

take your VIN numbber to a dealer. it also helps to have proof of ownership. was just wondering, whats a vin number? where would i find it? cos i have lost the keys of my peogeout 306 and im wondering how to get spares Your VIN number (or Chassis number) is etched under the bonnet, on to the bulkhead of the car (the Facelifted model has it on the back left hand side at the top near the fire wall). The number will probably start with a V. Take a note of the number and take that, along with any documentation you got with the car and the FULL 2 page V5 Logbook (your legal ownership document) to your nearest Peugeot Dealer and request a new set of keys from them.