Air NZ ranked third in fuel efficiency among major airlines to fly across the Pacific Ocean, according to a report by the International Council on Clean Transportation. The report, conducted by the researcher that exposed Volkswagen AG's emissions cheating, showed that Air NZ burns an average of 1 litre of aviation fuel per 35 kilometers. The ICCT looked at 20 airlines that operate flights from mainland US to East Asia and Oceania in 2016. Air NZ was narrowly behind Hainan Airlines and ANA which were tied for the greenest flights - burning average of 1 litre of aviation fuel per 36km. Other major findings in the study stated the 4-engine Airbus A380 was not fuel-efficient over long distances, while low oil prices had a detrimental impact on airlines investing in new planes. <br/>