What are the best modifications for increasing fuel efficiency on a Toyota Corolla?

I recently bought a Toyota Corolla and I love the car, but I feel like it's not as fuel efficient as I expected. Are there any modifications or additions I can make to improve its fuel efficiency? I don't want to sacrifice performance or comfort, but I also don't want to spend a fortune. Any recommendations?

I would suggest investing in a cold air intake system to improve airflow and increase fuel efficiency. It's a relatively affordable option and won't affect comfort or performance. Also, make sure to keep up with regular maintenance and check your tire pressure regularly for optimal fuel economy.

Another option is to switch to synthetic oil. While it may be a bit more expensive, it can improve your car's fuel efficiency and also provide better protection for your engine. You may also want to consider lowering your vehicle with a performance suspension kit to reduce drag and improve aerodynamics.

One simple and inexpensive change you can make is switching to a lighter weight oil. This can improve fuel efficiency and also reduce wear and tear on your engine. You could also add a high flow catalytic converter to help your engine breathe better and improve gas mileage.