This is the first time that I have owned a car with a pessimistic fuel usage computer. I did 200 kms in the car from new and then filled it at my local supermarket (level ground). Then did 465 kms and filled it again (same pump) with 26.5 litres. Petrol is 1 euro per litre so this is easy. The car said 6.6 litres per 100 kms which is 43 mpg ... not good. However the actual consumption works out at 5.7 litres per 100 kms which is 50 mpg ... much better. Anyone else have any views on the accuracy of the onboard computer. My last car was a Renault and it lied to the teeth ... but always told me that it was doing a lot more mpg than it really was.