Your car guzzles much more fuel and money than you think.
Fuel consumption results obtained in the laboratory and on the road, in real-world driving conditions, were compared by the International Council on Clean Transportation (ICCT).
Here is what they found:
And this gap is growing bigger and bigger:
How is it possible?
Before the emission tests in the laboratory, carmakers optimise their cars in a way that is not representative of real-driving conditions. By doing so, they manage to reduce, on paper, fuel consumption and CO2 emissions.
For example, they:
- use so-called "fuel saving" technologies, like stop-start systems ⓘ, that makes cars more efficient during the test in the lab, but not on the road.
- make the most of test loopholes, including defeat devices ⓘ, to reduce emissions on paper.
- switch off part of the car equipment, such as air conditioning and lights, during the test.
Here is an overview of the ways the official data can be manipulated:
What does it imply?
This fraud has huge consequences for the consumer, the economy and the environment.
We must close the gap
Consumers must be able to buy cleaner and cheaper vehicles, with fuel consumption figures they can trust.
Carmakers have been able to achieve, on paper, good fuel economy results. But this is only due to optimisations, flawed tests, the absence of spot checks on cars already sold, and the difficulties for consumers in taking action against unrealistic fuel consumption figures.
To tackle global warming, save consumers money, keep European carmakers competitive and reduce the EU's dependency on imported oil, we must close the gap between official and real fuel consumption figures.
Test manipulations & exploitation of loopholes
T&E and DUH are launching their campaign “Get Real – demand fuel figures you can trust”
Regulation on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles