Environmental aid is poisoning against hybrids

Deutsche Umwelthilfe had its own institute tested for plug-in hybrids – and in a practical test, it was possible to demonstrate that the standard values ​​were clearly exceeded. But many modern gasoline and diesel engines don’t do well either.

Clear statement in Berlin

Dhe consumption and pollutant emissions of hybrid cars, but also of gasoline and diesel cars, are higher than the official figures. This is the finding from a study, the results of which the German Environmental Aid (DUH) announced on Wednesday in Berlin.

According to this, the association’s own Emissions Control Institute (EKI) was able to prove that the standard values ​​were exceeded in four plug-in hybrids (Mercedes A250e, Porsche Cayenne E-Hybrid, Volvo XC40 T5, Volvo XC90T8) in a practical test – at the top it was more than 600 percent have been.

With 499 grams of CO2 per kilometer, the Porsche Cayenne, which is tax-subsidized as a hybrid, emitted five times the EU fleet limit value, which is, however, not binding for individual models. The EKI is driven in the particularly consumption-intensive “Sport Plus” mode, which was started with an empty battery.

Not only wrong information with the greenhouse gas information

High consumption and therefore exhaust gas values ​​are mainly achieved when the engine is required to perform and, at the same time, as a generator, it charges the battery. In contrast, the tax incentives for plug-in hybrids are based on the idea that short distances, such as the daily commute to work, are covered electrically and the batteries are charged at night from the power grid.

The DUH also tries to prove the inadequate determination of CO2 emissions on conventional vehicles. In a test on the road according to the specifications of the NEDC test cycle (which is determined on the test bench), the gasoline-powered Audi A5 2.0 TFSI produced emissions of 202 grams of CO2 per kilometer, the official value is 149 grams the newer WLTP procedure, which is also used for taxation.

The measurements also showed that the automotive companies did not only provide incorrect information when it came to climate gas information, explains the DUH. When testing for nitrogen oxides (NOx), some modern diesel and gasoline cars exceeded the legal limit values ​​by up to 50 percent when tested on the road. At the same time, the EKI figures show that many gasoline and diesel vehicles were astonishingly close to the test bench values ​​in test drives, and in some cases even below them.

Difficult to standardize driving tests

According to its own information, the EKI subjected eight gasoline cars, including four plug-in hybrids and seven diesel vehicles, to a total of more than 100 individual emissions tests on the road for the evaluation. In addition, three models were measured on a roller dynamometer at TÜV Nord.

Based on the findings, the DUH calls for an end to the preference for plug-in hybrid vehicles and the abolition of laboratory test procedures, which it considers absurd. In reality, most plug-in hybrids on the road showed CO2 emissions well above those of comparable pure combustion engines. The DUH expects the decision of the federal government to “end this mismanagement immediately”, said federal managing director Jürgen Resch. “We demand a stop of this absurd promotion of climate-damaging plug-in hybrids,” he said.

According to his association, the measurement method would have to be changed and the values ​​determined in real operation. Because only the real values ​​could be the basis for assessing the climate friendliness of a vehicle. The problem here is, of course, that practical driving tests are difficult to standardize due to different traffic conditions, which is why they have so far only been used in addition to measurements on the test bench. DUH traffic advisor Axel Friedrich said he saw evidence of defeat devices. But he could not prove this.

The Association of the Automotive Industry (VDA) defends itself against the allegations. “Here the obvious attempt is being made to defame a modern type of drive,” emphasized the association. Plug-in hybrids are on the move with zero emissions on distances of up to 70 kilometers, provided the e-batteries are charged. “However, if a plug-in hybrid is driven with an empty battery and in extreme sport mode, the consumption figures are higher than with conventional combustion engines.”

In urban traffic with a lot of braking and starting situations, the hybrid cars have been shown to have lower consumption than a pure combustion engine even if the battery is empty. Because braking energy recovery saves fuel. The measured values ​​of the DUH are “neither representative nor a helpful contribution to the discussion on how the CO2 emissions in traffic can be reduced sustainably”.

The representatives of the automotive industry will meet on Tuesday in a video conference to consult with Chancellor Angela Merkel and other members of the German government. According to reports, it is less about bonuses than about the topics of autonomous driving and artificial intelligence.