What is the best way to increase fuel efficiency in my Toyota Camry?

I've been noticing that I'm spending a lot on gas every week with my Toyota Camry. Are there any tips or products I can use to increase its fuel efficiency?

One simple way to improve your Toyota Camry's fuel efficiency is to regularly check your tire pressure. Under-inflated tires can decrease fuel economy by up to 3%. Also, make sure to remove any unnecessary weight from your car and avoid excessive idling.

You can also consider upgrading your air filter to a high-performance one, as it can increase fuel efficiency by up to 10%. Additionally, using a fuel injector cleaner every few months can help improve gas mileage.

In terms of products, you may want to look into purchasing a fuel additives or a fuel economy module, which can help optimize your car's fuel consumption. It's also important to keep up with regular maintenance, such as oil changes, to ensure your Camry is running at its best.