Rainer Wiek, a petroleum analyst with Energie Informationsdienst, a German trade magazine, said fuel shortages in the United States were to blame for the price pressure.
BBC: Holiday fuel rise fury
2.
Motorists are often frustrated by their inability to match official fuel consumption figures, so the magazine has used the data to create an online calculator that will help them work out their true miles per gallon.
BBC: Fuel economy tests reveal 'true MPG'
3.
Although the Environmental Protection Agency ( EPA) assigns a fuel economy rating to all new vehicles, Consumer Reports magazine conducts its own independent testing.
FORBES: Consumer Reports' Best Cars For Fuel Savings