Following the almost complete disappearance of regular grade petrol in Germany a while back, they are starting to phase out Super now, too. It is being replaced by E10, a mixture of petrol and 10% ethanol. The trouble is E10 can damage engines which are not suited to this additive in the fuel. Mainly older vehicles are affected, but some current models, too. Because many people are unsure of its suitability for their particular car they are resorting to the much more expensive Super Plus grade and this has already created a shortage of Super Plus (which was hardly being purchased before).
I would therefore recommend anyone coming to or through Germany in the near future to check before departure whether their car will tolerate E10.