I have no idea what the tax structure for gasoline in Sweden looks like, and I believe gasoline is too cheap everywhere anyway, but something must be deeply wrong when this stuff is around 37% cheaper in Sweden. Yip, you read that right. Last price we saw in Germany was 2,24 EUR ish for E10, Price for Swedish 95 (the closest equivalent) is around 15,54 SKr which converts to 1,41 EUR.
Again, tax may play a role, so grain of salt etc.