The French auto Group published its second report over the real fuel use of its cars and the results confirmed once again the big differences between real-world conditions and lab tests.
Following the diesel emissions scandal unleashed by Volkswagen, Peugeot-Citroen committed to measure and publicize real-world fuel economy figures of its core models. The first result published in Spring showed levels of up to 50 percent higher than the official ones, for now the new results to point quite similar findings. 14 models were evaluated on public roads (25 km urban, 39 km rural and 31 km motorway) under real-world conditions, with passenger and luggage loads, road gradients and the use of air-conditioning systems. The cars used an average of 44 percent more fuel in real life than their official specifications, while consumption was 39 percent higher for 11 Citroen cars and 40 percent more for the DS vehicles.
As an example, the largest gaps was recorded by Peugeot 3008 1.2l PureTech 130 (official combined of 4.9 l/100km vs the real world 7.6 l/100 km), Peugeot 2008 1.2l PureTech 110 (official combined of 4.8 l/100km vs the real world 7.1 l/100 km), 308 1.2l PureTech 110 (official combined of 4.0 l/100km vs the real world 6.3 l/100 km), C4 Picasso BlueHDi 120 (3.9 l/100km vs 6.5 l/100 km) or Grand C4 Picasso PureTech 130 (5.0 l/100km vs 7.4 l/100 km).
The company said it would provide real-life emissions figures for another 20 models by the end of the year and it would also introduce an online fuel simulator allowing customers to reduce their fuel consumption depending on driving conditions. The measurements are made under a protocol developed with two non-governmental organisations, the NGO Transport & Environment and France Nature Environment, and are audited by Bureau Veritas.