I have done 5 trips to North Norfolk and back to Gloucestershire since March this year, all roof up, 2 people, 2 dogs, boot full. Weather has been mainly fair but some rain, traffic variable but mainly good. Route M4, M25, M11, A14, A11/A134/A1065/A148 to Cromer. All at legal maximum conditions allowing. Total distance c1500 miles Average MPG 30.1 Fuel Used: Tesco Momentum 99 (mainly) & Shell V-Power. I am happy with this.