Reviews that say the Q7 is 'too big for UK roads' are wrong. Before the Q7 I drove an Avant and it took me about 5 minutes to get used to the size of the Q7. Do you need the array of parking sensors/cameras and change lane assist? Rear audio (and front at a push) is all that's required. Fuel economy: It is just coming up on a quarter full having done 360 miles. I expect it to do near to 500. My Avant used to do about 220 miles. Overall: superb, versatile, comfortable, great drive.