We have just completed 12 months 9000 miles of living and towing with the A3 etron. The mpg worked out at 83mpg over that distance. All our local running is on electric,longer journeys we start with a full battery and set the car in hybrid mode. Towing or solo we travel at 60mph where possible. Included in the above mileage was 3 towing trips, Carnoustie in Scotland, Perranporth in Cornwall, Cambridge. The towing mpg range from 26-32mpg. This towing mpg compares well with out 2litre TDi Seat Altea automatic which used to return 28-30mpg on similar journeys.For our life style we find it a brilliant vehicle.