Plug-in hybrids may emit more carbon dioxide (CO2) than claimed by manufacturers, even when fully charged, according to the European environmental group Transport & Environment (T&E).<\/p>\n
T&E recently tested the plug-in hybrid versions of the current generation BMW 3 Series, Peugeot 308, and Renault Megane. All three are popular in Europe, with only the 3 Series sold in the U.S., featuring the 330e badge for the plug-in hybrid model.<\/p>\n
In tests conducted by the Graz University of Technology (commissioned by T&E) starting with each car fully charged, the BMW emitted three times its official CO2 rating while following a typical 34-mile travel route, according to T&E. Peugeot and Renault emitted 20% and 70% more CO2 than their official ratings, respectively.<\/p>\n
Plug-in hybrids also fell short in electric range. In city driving, BMW and Peugeot only achieved 74% and 53% of their declared electric ranges, respectively, according to T&E. The Renault matched its claimed range, but with only 31 miles per charge and no fast charging available, the group was skeptical of its daily practicality.<\/p>\n
T&E also criticized the effectiveness of BMW’s geofencing behavior, which the automaker has offered in its plug-in hybrids for a few years. This feature is advertised to allow drivers to switch to electric power in, for example, densely populated urban areas. However, while driving through the center of such a city, the 3 Series turned on its engine twice, according to T&E.<\/p>\n
This is the second round of accusations by T&E, which has published several studies analyzing real-world emissions to contrast with car manufacturers’ laboratory tests. In 2020, the group said that plug-in hybrid pollution could be worse than that of comparable gasoline or diesel cars when vehicles switch to battery-charging modes, using the engine power for both propulsion and charging.<\/p>\n
Automakers have promoted plug-in hybrids as a solution to Europe’s stricter emissions standards, but this has raised ongoing concerns from environmental groups. Questions about German automakers’ push toward plug-in hybrids date back to 2015, if not earlier.<\/p>\n
Regulators also appear to be reconsidering plug-in hybrids. A 2021 report said that European regulators were considering ending the era of plug-in hybrids prematurely by adopting even stricter emissions standards that would force an accelerated shift to fully electric vehicles.<\/p>\n
In the U.S., California’s renewed rules will require much larger batteries and stricter rules on tailpipe emissions for plug-in hybrids, demanding a 50-mile electric range by 2035.<\/p>","protected":false},"excerpt":{"rendered":"
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