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Plug in Hybrid electric Vehicles Pollute Nearly as Much as Petrol Cars, Study Reveals
Plug-in hybrid electric vehicles release almost five times more global warming emissions than official figures show, as per a new report.
Growing Discrepancy Between Lab and Actual CO2 Output
Statistics shows that PHEVs emit just one-fifth less CO2 than conventional petrol and diesel vehicles, according to research conducted by a advocacy group. That differs significantly with laboratory estimates, which assumed a 75% decrease in emissions.
Analysts examined data from onboard energy use monitors of eight hundred thousand cars registered in Europe from 2021 and 2023. They discovered that actual CO2 emissions from PHEVs in 2023 were 4.9 times higher than lab figures, up from 3.5 times in 2021.
“Actual CO2 output are increasing, while official emissions are decreasing,” stated a senior analyst involved in the study. “That gap is widening and creates a significant issue. Consequently, PHEVs pollute almost as much as gasoline cars.”
Key Reasons Driving the Emissions Gap
Analysts linked most of the gap to overestimates of the “utility factor” – the ratio of miles travelled in electric power compared to total distance. The team found that only 27% of travel was completed in electric mode, whereas official assumptions suggested 84%.
Even, when running in EV mode, pollution levels were well above lab estimates. That happened because EV motors were insufficiently powerful sufficient to function alone, leading to combustion motors using gasoline for nearly one-third of the distance completed in EV mode.
Regulatory and Economic Consequences
Based on calculations, the underestimation of PHEV CO2 output allowed four major automaker groups to avoid over €5bn in penalties from 2021 and 2023, by falsely simplifying adherence with EU average fleet CO2 standards.
Additionally, drivers of PHEVs could spend approximately €500 extra annually in operating expenses than would be assumed under laboratory conditions.
“The strong statements that manufacturers like to make about their plug-in hybrid cars are clearly far from the truth,” stated a automotive analyst. “Consumers are being misled into believing that by buying a PHEV, they are helping the environment and saving money. Actually, PHEVs are little improved than standard gas and diesel vehicles in terms of energy use, CO2 emissions, and operating expenses.”
Political Debate and Industry Lobbying
Plug-in hybrid vehicles have recently been brought again into policy debates as carmakers have pressed the European Union to relax CO2 standards. A proposed prohibition on sales of new internal combustion cars in 2035 has faced heavy lobbying from the automotive sector and opposition from member states with large automotive manufacturing.
Some senior politicians have suggested PHEVs as a potential “compromise” solution to introduce in the legislation.
One independent energy economics specialist, who was not involved with the research, described the report a “highly valuable addition” after a long period in which segments of the car sector argued there was too little information to accurately assess real-world CO2 output.
“These findings demonstrate, beyond any doubt, that the gap between official and real-world PHEV energy use and CO2 output is much, much greater than for gasoline or diesel cars,” the expert stated. “All regulatory adjustments regarding PHEVs should be implemented with utmost care and considering that evidence.”
Tina Whitehead
A certified financial planner with over 15 years of experience, specializing in retirement planning and wealth management for UK residents.
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