New metrology regulations: Less gasoline for the same money?:

As "Kontraste" reports, measuring devices for the dispensing of heating oil and fuel are to be calibrated to larger tolerances from October onwards. As a result, fuel pumps may in future dispense up to one percent less fuel than displayed. Previously, only 0.2 percent was allowed. The background to the EU directive is that every manufacturer should be allowed to freely sell their fuel pumps in every EU country - even if they work very inaccurately.

Sometimes even shaking your head doesn't help with the nonsense that is being served up in the EU ...