I am the happy owner of a Prius bought last September (2006). Happy about most features of the cart except consumption! It has now about 30.000 km and I could never reach the announced low consumption advertised for mixed useage (4.2 l/100 km). What I get when driving with a very light foot (no strong acceleration, never faster than 115 km/hour, 80% highway, no strong hills) is 5.1 l/100 km. I once tried to reach the 4.2 value, but this imposes driving never faster than 90 km/h and being a pain for other road users by being generally too slow.
I have been wondering if the Toyota values are not in fact those reachable in the US, where highway speed is limited to about 90 km/hour (that must be about 55 miles, isn't it ?). But such a blunt error is unlikely for a company like Toyota, isn't it.
I am wondering if other European users are experiencing the same abusive consumption rates?
I am seriously looking into suing Toyota for abusive publicity.
Can someone here give an equivalence or between miles per gallon and liters per 100 km ?
Happy hybrid driving ,
Robert Herzog, Belgium