E10 petrol

jimbo6977

Tesco Momentum is barely any more ridiculously expensive than E10. In fact the pricier E10 gets, the better a deal Momentum looks. 

Fighter1986

Three car household here:

2005 Audi A4 2.0TFSI Quattro. Still returns 35-38MPG highway.
2003 Mercedes AMG E55. Mixed consumption worse, MPG dropped from circa 18 to circa 14.
2008 Jaguar XF 3.0. Mixed consumption far worse, MPG dropped from circa 24 to circa 14. 

Will try the cars on a tank of premium on next fill and report findings in due course.