Editorial policy

How we research

Our standards for accuracy, independence and transparency.

Updated By the DUS Car Hire editorial team How we research

Sources we rely on

  • Düsseldorf Airport (dus.com) – terminal, car rental, parking and traffic figures
  • Suppliers – location details, opening hours and rental terms
  • Authorities – German road traffic regulations and fine catalogue, Federal Environment Agency (low-emission zones), ASFINAG, Swiss federal office, French Crit’Air office
  • Open data – OpenStreetMap (maps), ECB reference rates via Frankfurter (currency), Nager.Date (public holidays), German Weather Service (climate averages)

How we check and update

Every guide is checked against primary sources before publication. We re-check content at least twice a year and whenever rules change; the “Updated” date shows the latest check. Where details change quickly (prices, opening hours, fees), we give ranges and point you to the rental terms of each offer.

Prices on information pages

“From” prices on guide pages are indicative examples from our booking engine. The binding price is always the one shown in the booking process.

Independence

Suppliers cannot buy positive coverage. We describe pros and cons even where we earn commission from a supplier. We do not publish invented reviews.

Corrections

Spotted a mistake or has something changed on the ground? Tell us via the contact page. We check every report and update the page.

FAQ

Frequently asked questions

5 answers

Our editorial team, who research airport procedures, rental terms and German road rules and check them against official sources.

Supplier pages describe facts such as desk location and loyalty programmes. Our guides are written independently of any supplier.

Guides are re-checked regularly and whenever rules change. The “Updated” stamp on each page shows when it was last reviewed.

We only want to show reviews from a verifiable source, so we removed unverified ratings rather than publish numbers we cannot back up.

Please use the contact page and tell us the page and what has changed. We correct errors as quickly as possible.

Still have a question? Contact our support team.

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