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Long term average over a tankful on the Laguna (1.9dci 120bhp) we get 51mpg.
On a mostly motorway run of 100 miles (with a few miles town driving each end) at 73mph( set on cruise control which gives an indicated speed of 75mph on the speedo and 70mph according to TomTom gps) we average 54mpg.
If I reset the trip computer when I leave work, the 18 mile journey home leaves me with an average of 74mpg.
The most accurate way to measure your average mpg is to measure it over longer distances - until you do at least 200 miles on anormal tankful you don't really get that good an indication.
Currently in SportTourer's garage:
2010 Laguna III SportTourer Initiale Tom Tom.
Last edited by SportTourer; 30th September 2007 at 11:03 AM.