First tank of fuel, ODO reads 860.2km, GPS reads 896.7km. Big difference. Speedo is 4km under which is no big deal. Dash fuel economy reads 7.3L/100. 70L of fuel so actual economy is 7.9L/100 based on GPS distance. 8.2L/100 based on ODO. It seems ODO is out about 4%. I'd also love to hear if...