Manufacturers are using creative methods to manipulate official fuel consumption tests, according to claims by a transport pressure group.
Transport & Environment (T&E) – an organisation campaigning for sustainable transport – has published a report highlighting the differences between the figures achieved in official tests and those returned in real-world driving conditions.
T&E says figures achieved by motorists are on average 23% lower than those attained in official mpg tests.
The current rules for official fuel economy tests include a number of 'loopholes' that allow manufacturers to manipulate the results.
T&E highlights that manufacturers can tape over grilles and cracks between the doors to improve aerodynamics, fit tyres that have been over-inflated and remove as much weight from the car as possible to help lower emissions and improve fuel consumption.
T&E wants a new test that produces results that can be achieved in real-world driving conditions.
What Car?'s True MPG team tests real fuel economy in real-world conditions. To find out what fuel economy to expect from your car, head to the True MPG calculator.
By Matthew Burrow
Our reviews are based on hard data and thorough testing in the real world.
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