There are many examples. Many SUV's in the US these days are only able to meet emissions requirements by automatically turning off the engine at stoplights or whenever the car comes to a stop. Many people find it annoying because there's a delay when you press the accelerator to go and then you press harder and the car then jumps. Most cars allow you to disable it, but you have to do it every time after you turn the car on. No one likes it. You can sometimes modify the car or access hidden computer settings to disable the setting. Technically, it's illegal to do.