[tollo]

What do you think about this kind of table? done allready ? I think that it would help to see the big picture.

Assume that speed is 65km/h / 40mph and "typical car" (unmoded)

Aerodynamics (50%) (0.3 drag factor):

Optimal shape 15,00%
Rear 11,00%
Bottom 7,50%
Mirrors 1,50%
Front 6,00%
Sides 3,00%
Tyres 2,00%
Antenna 0,25%
door handles 0,25%
Wipers 0,25%
Wheel covers 0,25%
Wheel skirt rear 1,00%
Wheel skirt front 1,00%
Front Grill 1,00%

Others (50%):

electricity = alternator 10,00% 0.2liter/100W
Gears 10,00%
Tyrerollingresistance 5,00%
Oil- and waterpump 10,00%
Motor friction loses 7,50%
termodynamic loses 7,50%

I made an openoffice-table from these, but I can't post links. Table is just rough and needs much development.