Tach, we have the 1.8 (Z18XE) in our Astra G (Bj 2004) and are now refueling E10. Doesn’t seem to be a difference. The car drives my wife, I only rarely and anyway only in the city. I imagine that he is not quite as sparkling anymore, so he has a slight loss of performance. Can that be that you really feel this at E10? How does it look with consumption? We drive too little (so far) to draw on own numbers. If he has less power and higher consumption (so that the supposed consumption) In the case of the lower litre price, the savings are de facto none at all), and then we move back to E5.