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Avoidable risks

Ten common fuel-can mistakes

Most errors begin with an assumption: that colour proves compatibility, approval removes the need for inspection, or a maximum quantity is a target.

Reading time: 8 minutes
  1. Using a general-purpose container. Water cans, bottles and old chemical containers are not substitutes for a fuel can intended for the actual liquid.
  2. Relying on colour. Use permanent marking and manufacturer data.
  3. Ignoring the individual condition. Approval does not excuse cracks, corrosion or a damaged seal.
  4. Choosing capacity before handling. A full 20-litre can may be difficult to lift and pour safely.
  5. Treating a legal maximum as advice. Limits and exemptions describe legal boundaries, not the safest quantity.
  6. Leaving the can unsecured. Upright placement without restraint is not sufficient in a collision or emergency manoeuvre.
  7. Using incompatible spouts or caps. Improvised adapters can damage threads and seals.
  8. Ignoring route operators. Ferries, tunnels, rental companies and campsites may apply additional conditions.
  9. Storing near heat or ignition sources. Local fire, building and tenancy rules must be checked.
  10. Continuing after fuel odour appears. Find and resolve the cause rather than masking it.
Context matters: this checklist is general safety guidance, not a substitute for the current law, operator conditions or manufacturer instructions for a specific country and use.

Frequently asked questions

Is a legal maximum a recommended amount?

No. A legal exemption or maximum is not a safety recommendation. Carrying less may be the more proportionate choice.

Can luggage hold a can in place?

Loose luggage is not reliable load restraint. The can needs a stable upright position and suitable restraint.

Does ventilation solve a leaking can?

No. Fuel odour or leakage indicates a defect or spill that must be addressed. Ventilation does not make the container acceptable.

Sources for this guide

The following authorities and documents were used for this guide. Where rules change, the current original source takes precedence.

  1. Fuel in a spare can: what is permitted? [German]ADACGerman transport quantities, container marking, restraint in vehicles, international travel and ferries
  2. Section 22 German Road Traffic Regulations – Loads [German]Bundesministerium der Justiz / Gesetze im InternetGeneral German requirements for securing loads
  3. Questions and answers on dangerous-goods packaging and UN marks [German]Bundesanstalt für Materialforschung und -prüfung (BAM)Meaning, limits and interpretation of UN packaging marks