Drivers are taking Google Maps’ advice for how to reduce greenhouse gas emissions from their trips, according to the company.

In late 2021, Google debuted a feature in Google Maps that allows users to see the most fuel-efficient routes. The feature has since helped prevent around 1.2 million metric tons of planet-heating carbon dioxide emissions, Google estimates in its latest environmental report released today. That’s almost like taking 250,000 gas-guzzling cars off the road for a year, the company says.

The tool launched in the US, but now it’s also available in Canada, Egypt, and nearly 40 more countries in Europe. Google uses a machine learning model to predict which route is the most fuel- or energy-efficient and recommends it to Maps users. If the most fuel-efficient route is also the fastest, Google Maps will default to that option.