Latvia's Andris Piebalgs, Energy Commissioner since last November, told Die Welt newspaper that he supported the idea originally proposed by the Paris-based International Energy Agency (IEA). He said: 'When cars in Germany race along the roads at a speed of 200 km per hour, of course they use a lot of petrol.'
And although Mr Piebalgs is not directly responsible for speed limits at the commission - that lies with French Transport Commissioner Jacques Barrot - he has a brief to guarantee the EU's energy supply security, and so could legitimately push debates on the issue in Brussels.
He said: 'The topic of speed limits in Europe should be discussed in the future.'
The IEA will also promote the topic - its officials plan to propose a universal 90kph limit in May at its annual meeting of developed country energy ministers.
Many German motorway stretches have no speed limits, a right enthusiastically embraced by its motorists. Its government had been moving towards imposing speed limits last year, but retreated amidst public protests.