A week of mixed driving on Welsh country A roads with about 50 miles of dual carriageway driven at about 70mph has resulted in 650 miles covered at 42mpg and a 31mph average speed. This is using the car's trip computer and fuel estimate so not guaranteed to be spot-on. Hopefully it will improve as the miles increase and internal friction decreases. Certainly the Audi was markedly more economical after 15,000 miles compared to the first 5000 to 10,000 miles. That by about 5mpg on average. Very happy so far.