Document TemplatesConsumer Rights & Hidden Defects
Published on 12/05/2026

Practical Guide: Your first complaint letter to the manufacturer

Faced with a £1,200 bill for an AdBlue tank, anger is a poor advisor. To be effective, your first step must be formal and legal. Here are the key points not to forget in your letter.

Essential Elements

  • VIN Number: Your vehicle's unique identity.
  • 'Hidden Defect' mention: Explicitly cite consumer protection laws regarding manufacturing defects.
  • Proof of Maintenance: Attach invoices proving the vehicle was serviced according to recommendations.
  • A Clear Request: Don't ask for a 'gesture', demand 'full coverage' due to the design flaw.

The Importance of Registered Mail

A verbal discussion or an email has no legal value as a formal notice. Only registered mail with proof of delivery starts the legal clock and proves your action. Use our templates to save time.

Are you affected by this problem?

Join the national registry to defend your rights under the warranty of hidden defects (Art. 1641).

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