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PSA Group, NGOs T&E and FNE, and Bureau Veritas publish their protocol for measuring real-world fuel consumption

Following the official release of real-world fuel consumption figures for 30 Peugeot, Citroën and DS models in July 2016, the PSA Group; the NGOs Transport & Environment (T&E) and France Nature Environnement (FNE); and Bureau Veritas are fulfilling their commitments and publishing the test protocol, as well as a spreadsheet tool.

The protocol for measuring real-world fuel consumption defines the means (necessary equipment) and methods (measurement and processing) that should be systematically applied to calculate the average real-life fuel consumption of the average customer. The protocol, which is valid for Europe, is carried out in three stages:

  • selecting and checking the vehicle
  • driving the vehicle and performing the measurement
  • processing the measurement results

Required equipment includes: MIDTRONICS battery management; new, charged battery (may be required); numbered seals; towing hitch; workshop equipped with welding set (for exhaust system); exhaust system gas-tightness tester; new exhaust system rear part; portable emissions measurement system (PEMS); standard gas for calibrating PEMS; weather station; scales; ballast for loading vehicle (may be required); and emissions rolling road test.

The measurements should be taken when the car is being driven by a non-professional driver on public roads open to traffic and under real-life driving conditions, with normal use of air-conditioning systems, passenger and luggage loads and road gradients.

In addition to the results already published in July 2016, Peugeot and Citroën are releasing the real-world fuel consumption figures of another 10 models (including the new Peugeot 3008 and Citroën C3).

By the end of 2016, real-world fuel consumption figures for 50 models tested during the year will be published on the Peugeot, Citroën and DS website. At the same time, a simulator to enable customers to predict their vehicles’ fuel consumption based on driving style and conditions will also be released online.

In 2017, the PSA Group, Transport & Environment, France Nature Environnement and Bureau Veritas will extend the same procedure to the measurement of real-world NOx emissions.

The real-world test developed with PSA Group provides full transparency towards customers and more representative information to drivers than the new laboratory test, helping them choose the most fuel-efficient cars. This scientific approach is robust, reproducible and reliable in measuring real carbon emissions. Thus, we urge the European Commission and all carmakers to use this test for regulatory and advertising purposes.

—Greg Archer, Clean Vehicles Director at Transport & Environment

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