It’s the M1 Rover, an unmanned ground vehicle, built around the Arduino platform. The design goal of the M1 Rover isn’t just to be a remote-controlled car that can be driven around indoors.

A new oxygen sensor can cost from less than $100 on some models to $300 or more on others, but that doesn’t include labor, which can vary widely by vehicle because of where the sensors are located.

Your vehicle's O2 sensor plays a significant role in its performance and if it's faulty, it's not something you should ignore. Here's what you need to know.