Audi Allegedly Used Software to Fake Greenhouse Gas Emissions

California regulators reportedly discovered a software cheat to minimize carbon-dioxide emissions during testing

2 min read
A hand polishing the Audi symbol, four interlocking rings.
Photo: Uli Deck/dpa/AP Photo

Audi cars allegedly fooled environmental regulators by emitting less carbon-dioxide on a testing mount than the cars allowed themselves to spew when on the road, the weekly German paper Bild am Sonntag reports. It’s the same trick that Audi and other Volkswagen brands had earlier used to defeat tests of their diesel cars’ emissions of nitrous oxides.

Nitrous oxides are a component of ground-level smog, which is harmful to health. Carbon emissions are a greenhouse gas.

Both the earlier scam and the current alleged scam were uncovered not in Europe—where most of the test-evasion took place—but in the United States. The nitrous oxides scandal—which has cost VW billions of dollars in fines and compensation and a recall of some 9 million cars—was discovered a year ago by engineers at West Virginia University’s Center for Alternative Fuels, Engines and Emissions. And the alleged evasion of carbon-emissions testing was found by the California Air Resources Board (CARB), in research conducted in both diesel and gasoline-powered Audis over the summer, the German paper reports. 

So far neither Audi nor CARB have commented on the latest report.

The cars defeated the carbon test by using data from the wheels and steering wheel to figure out whether the car was up on a test mount. “If the steering wheel is not moved after the start, a shift program activates itself in automatic gearboxes, with which particularly little CO2 is emitted; if the driver turns the steering wheel, this ‘warm-up strategy’ is deactivated,” says Bild am Sonntag, as rendered by Google Translate. 

The Wall Street Journal reports that the carbon-dioxide cheat was discussed by high-level officials of VW and Audi at an event in South Africa in 2013, two years before the nitrous-oxide cheat came to light. “The shifting program needs to be configured so that it runs at 100 percent on the treadmill but only 0.01 percent with the customer,” said Axel Eiser, the head of Audi’s powertrain division, according minutes of the discussions that the newspaper cites.

The Conversation (0)

We Need More Than Just Electric Vehicles

To decarbonize road transport we need to complement EVs with bikes, rail, city planning, and alternative energy

11 min read
A worker works on the frame of a car on an assembly line.

China has more EVs than any other country—but it also gets most of its electricity from coal.

VCG/Getty Images

EVs have finally come of age. The total cost of purchasing and driving one—the cost of ownership—has fallen nearly to parity with a typical gasoline-fueled car. Scientists and engineers have extended the range of EVs by cramming ever more energy into their batteries, and vehicle-charging networks have expanded in many countries. In the United States, for example, there are more than 49,000 public charging stations, and it is now possible to drive an EV from New York to California using public charging networks.

With all this, consumers and policymakers alike are hopeful that society will soon greatly reduce its carbon emissions by replacing today’s cars with electric vehicles. Indeed, adopting electric vehicles will go a long way in helping to improve environmental outcomes. But EVs come with important weaknesses, and so people shouldn’t count on them alone to do the job, even for the transportation sector.

Keep Reading ↓Show less