Dates: June 14 to July 14
Odometer: 17691 to 18713
Distance travelled: 1021.4
Fuel used: 55.164 litres

Calculated fuel economy:
5.40 l/100 km
43.6 miles/US gallon
52.3 miles/imperial gallon

No, I did not make a mistake with the dates. The statutory holiday and two sick days I had in the last month certainly helped!