It was reported that the California Air Resources Board (CARB) find more models of the Volkswagen Group in the emissions test false. The Wall Street Journal and Reuters and other media quoted the Germany newspaper Bild reported that regulators found on the Audi brand cars for tampering with emission data software.

But the revelation is not a recent thing, but four months ago, before the media exposure, Volkswagen, Audi and the California Air Resources Board (CARB) chose to remain silent.

According to the sources, the software is installed on the wheel of a car, used to identify the car are in the lab testing phase or real driving condition.

If after starting the software detects the steering wheel does not have any activities, it determines that the vehicle is in the lab testing phase, will start the low carbon dioxide emissions model.

When after the steering wheel turning angle of more than 15 °, the system will switch to normal driving mode. California Air Resources Board (CARB) conducted tests, because turning the steering wheel and caused the system not to cheat, and Audi's fraud was pulled out.

Up to now, the California Air Resources Board (CARB) and the Volkswagen Group failed to respond on the matter.

据报道，加州空气资源委员会（CARB）发现更多大众集团的车型在尾气排放测试作假。《华尔街日报》和路透社等媒体援引德国报纸Bild的消息称，监管机构在奥迪品牌车型上发现了用于篡改尾气排放数据的软件。

但该行为的揭露并不是最近的事，而是发生在四个月前，在被媒体曝光前，大众集团、奥迪及加州空气资源委员会（CARB）都选择了保持沉默。

据消息人士透露，该软件被安装在汽车方向盘上，用于识别汽车正处于实验室测试阶段还是真实驾驶状态。

如果汽车启动后软件检测到方向盘并未有任何活动，则认定该车正处于实验室测试阶段，将启动二氧化碳排放量低水平模式。

当方向盘转动角度超过15°后，系统将切换至正常行驶模式。而在加州空气资源委员会（CARB）进行的测试中，因为转动方向盘而导致该系统无法进行作弊，于是奥迪的这一造假行为就被揪了出来。

截至目前，加州空气资源委员会（CARB）和大众集团都未就此事进行回应。