Samsung has come out fighting after an article in The Guardian claimed that Samsung TVs appear more energy-efficient in labs than in real life, saying that it “firmly rejects this suggestion.”

The article referred to an “unpublished” study from an EU-funded research group called ComplianTV, which apparently found “consistently higher energy consumption rates” for Samsung’s TVs in normal conditions compared to official lab-test conditions. These conditions, ratified by the International Electrotechnical Commission (IEC), normally involve playing back “fast sequences of varied material, such as recorded TV shows, DVDs and live broadcasts,” The Guardian reported.

This news comes shortly after German car manufacturer Volkswagen was found to have been cheating emission tests in its diesel cars, using so-called “cheat devices” that can detect lab-testing over real-world usage and alter the emissions accordingly.

Samsung’s “Motion Lighting” feature is designed to reduce power-consumption by lowering the brightness on a TV screen when the picture is in motion. Motion Lighting has been on Samsung TVs since 2011, but users are able to alter the screen settings manually, which effectively disables the energy-saving feature

“It is a standard out-of-the-box feature, which is switched on when the customer takes delivery of their TV, and remains on whenever the customer chooses to watch their TV in Standard viewing mode,” the company said in a press release.

So in other words, it’s distancing itself from the Volkswagen scandal by saying that Motion Lighting isn’t a secretive tool that only comes on during lab tests, but instead is a marketed feature that’s offered on many of the company’s TVs. “Motion lighting is not a setting that only activates during compliance testing,” Samsung said. “On the contrary. It is a default setting which works both in the lab and at home; delivering energy savings and helping us to reduce our environmental impact.”