It is not uploaded. certainly a mystery that there are evident discrepancies between the data on consumption and emissions of the Plug-in models resulting from homologation tests and the real ones. More These differences have been underlined several times and have sparked many debates on the validity of these differences. of this engine. In particular, over time, Transport & Environmenthas more often pointed the finger at this technology, often presented as a good solution for the decarbonisation of the transport sector, but which in practice would not be at all.
Already; in 2020, for example, the non-governmental organization had conducted an initial investigation together with Emissions Analytics, examining the BMW X5 xDrive 45e, Mitsubishi Outlander PHEV and Volvo XC60 T8 Twin Engine models. What emerged was very clear. Even with a charged battery and in optimal conditions, the three vehicles tested had emitted between 28 and 89% more than the average. of CO2 compared to the homologation data. With the battery discharged, on the other hand, the emissions had been three to eight times higher than that of the battery. compared to the official values.
Now, Transport & Environment once again rails against Plug-in technology, commenting on a new study carried out by the University’ Graz technique.
THE NEW SURVEY
The following PHEV models were examined in the new test: a BMW 3 Series, a Peugeot 308 and a Renault Megane. The final result is a strong discrepancy between the official data according to the WLTP cycle and the real ones. How is it? Was the investigation conducted? Tests with these cars have been conducted, says Transport & Environment, both on a classic commuter route and on a city journey. To detect the emissions, it is necessary to A PEMS (Portable Emissions Measurement Systems) device connected to the cars was used.
On the classic commuter route(home-work) of 55 km (hybrid mode, the "default" one) Peugeot and Renault have issued 33 – 50 g/km of CO2, i.e. 20% and 70% more; of official values. It is worth noting that the cars started with a charged battery. The BMW model, on the other hand, is; arrived to emit over 100 g/km of CO2, that is; 3 times the declared values. Result that improves using the "Anticipatory hybrid drive" which ensures the efficient distribution of the electricity consumption available along the entire journey. However, to use it is necessary. necessary to set a route through the navigator. Inconvenient solution, especially if the path to be tackled is a difficult one. known. However, in this case it is it was possible to reduce emissions to 67 g/km (twice the official value).
To make the best use of the Plug-ins, it was necessary to reduce emissions to 67 g/km. always need to recharge the battery. Otherwise, of course, consumption and emissions rise drastically. Further evidence comes from this new study. During the test with empty battery in the city, the BMW and Peugeot models achieved emission levels of around 200 g/km of CO2. Renault, on the other hand, took the lead. "stop" at 138 g/km of CO2.
The test then wanted < strong>deepening the autonomy in learning mode electric onlyof these cars. While driving in the city; of Graz, the electric range of all three PHEV models is 100%. been less than 50 km. Specifically, BMW achieved an electric range 26% lower and Peugeot 47% lower than officially declared. Only Renault has achieved the range foreseen by the homologation data.
< p>Transport & Environment then pointed the finger at the geofencing systemof which it is equipped BMW. It is a system which, using the GPS, allows automatic passage to the navigation mode. electric only in urban areas. According to reports, the tests in Graz showed that despite the presence of this technical solution, the internal combustion engine failed a couple of times. however activated in the city. Therefore, the system, according to the study, does not really guarantee zero-emission driving in urban areas.
Therefore, the non-governmental organization points out that this new test demonstrates once again that PHEV models they do not allow for a drastic reduction in CO2 emissions and they cannot guarantee zero-emission driving in cities. For this reason, it requests that Governments no longer deal with Plug-in models like electric cars in terms of concessions both in terms of incentives and in terms of some benefits such as access to city areas; with zero emissions.
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