.... last time I checked, I get about 11 km/liter (about 41 mpg).  

A little miscalculation.....11 km per litre = 42.8 KILOMETRES per gallon or
26.6 MILES pUSg (33.5 Imp)

For you possible interest

The usually metric kilometrage calculation involves litres used per 100 km.
This is a very easy and practical calculation in that if I know the distance
to be travelled fuel and cost calculations are instantaneous.
For example let's say my fuel consumption has been averaging 9 litres per
100 km. If I'm travelling from Detroit to Toronto (about 375 km) I know that
I will use 3.75 x 9 litres (= 33.75); If my cost is 60c per litre I know the
trip will cost me about $20.

Some useful comparisons:

Imperial mpg            US mpg                  km/100 litres

        50                      40                              5.7
        45                      36                              6.6
        40                      32                              7.0
        35                      28                              8.0
        30                      24                              9.4
        25                      20                             11.3
        20                      16                              14+
        15                      12                              18.8
        10                      08                              28            

For what it's worth my 85 Vanagon's kilometrage/mileage   peaked  about 2
yrs ago (at age 11) at 10.9 litres/100km (about 26 mi /IMP gal or 20.8
m/USg). It's now using 14 litres/100km.

Metric is very neat as all you who have travelled/lived outside the US (the
last non-metric hold-out).

Regards

Leo

Georgian Bay where today we have 4 cm of snow and at 10 AM the temerature is
-7�C.

85 Vanagon GL (for sale $1700US/ $2500 metric)