A survey carried out by Motorpoint, the UK’s leading car supermarket, has shown that a staggering 83% of British drivers believe automakers exaggerate the fuel-efficiency data of their products.The poll was conducted on Motorpoint's website and received more than 2000 responses. We've added a poll on Wheels24's website to see what South African drivers believe - go and vote now.COMBINED VALUESOver the past few years, Motorpoint says, it has noticed a trend towards people buying more fuel-efficient vehicles. From 2010-12 the average fuel consumption of cars sold by Motorpoint jumped from 5.79 to 5.26 litres/100km. "This means it is imperative that manufacturers state easily achievable efficiency levels for their vehicles so consumers can make the best decision for themselves." the company said.Across its five UK sites and on its website, Motorpoint displays urban, extra-urban and combined fuel-consumption values on vehicles as part of "an open and honest attitude to sales".MD David Shelton said: “As fuel prices continue to soar fuel economy is becoming a more important factor in buyers' choice of next vehicle. Our poll shows how important it is that they get accurate fuel-consumption data. More than 2000 votes clearly shows that consumers feel strongly about this issue."All our efficiency data is readily available to customers to assist in their decision-making from our broad range of makes and models."