Free complaint evidence tool

Evidence Strength Checker for Spain complaints

Before escalating a rental, car-hire, hotel, booking, property or tourist complaint in Spain, check whether your evidence is weak, medium or strong. This tool runs only in your browser and does not submit your answers.

Check your evidence Start a CostaSure check

Check your evidence strength

Select everything you already have. Your result appears immediately.

What the result means

Weak evidence

You may have a real issue, but the file is probably too thin. Collect payment proof, messages, dates and documents before escalating.

Medium evidence

You have useful material, but there may be gaps. The next step is to organise the timeline and identify missing evidence.

Strong evidence

You appear to have a clearer file. A structured complaint may now be easier to prepare and escalate if needed.

Related CostaSure pages

See the evidence checklist, Spain complaint hub, how to complain about a business in Spain, or all complaint checklists.

Free CostaSure tools

Use the free evidence checker, complaint message generator and complaint preparation guides here: Free Tools for Spain Consumer Complaints.

Spain trip affected by a flight problem?

CostaSure also has a safe flight-disruption add-on for Spain-related trips. It helps organise first-stage evidence, refund/rerouting facts, airline complaint wording and possible AESA escalation preparation — without positioning CostaSure as a flight compensation claims company.

Flight delayed or cancelled

Check the facts, airline reason, refund/rerouting position and first complaint step.

Airline refund problem

Organise refund, voucher, travel-agent and airline-response evidence before escalating.

Missed connection

Check whether the journey was one booking, what caused the delay and what rerouting was offered.

Denied boarding

Prepare gate evidence, airline reasons, rerouting/refund offers and complaint wording.

Flight evidence checklist

Collect airline messages, boarding evidence, receipts and complaint history before escalation.

AESA complaint preparation

Prepare documents and chronology where Spain is the correct passenger-rights route.