EU petrol and diesel prices hit record highs this week, according to the European Commission. Refining margins—the cost of turning crude oil into fuel—are partly to blame, and prices could remain elevated as ECB experts tell Euronews that diesel margins are expected to peak only in October.Filling up a car has never cost more on average across the European Union, according to European Commission data going back more than two decades. At the latest average prices, it costs about €103 to fill a 50...