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What to do if I lose a car key when selling my car UK

DateJanuary 6, 2026

1 Answer

LD
Linda Dominguez
January 8, 2026
Not liked26

Losing one car key typically won't affect selling your vehicle in the UK, as most cars come with two keys. However, it's advisable to replace the lost key before selling to avoid disputes. You can visit a dealership (like BMW, Audi or Mercedes-Benz specialists) to have a new key programmed with your car's engine immobiliser system.

Here are solutions for lost car keys in the UK:

  1. Use your spare key - Most UK cars (including popular models like the Vauxhall Corsa or Ford Focus) come with two keys. Always keep your spare key at home, not in the car.
  2. Contact a professional auto locksmith - For vehicles where the spare isn't accessible, UK-approved locksmiths can create replacement keys after verifying ownership with your V5C logbook and photo ID.
  3. Dealership replacement - Main dealers (such as Toyota or Nissan for Leaf models) can provide OEM replacements, though this is often the most expensive option at £150-£300 depending on the vehicle.