How often should I change the air filter on my Toyota Supra?

I recently bought a 1994 Toyota Supra and I want to make sure I am properly maintaining it. How often should I change the air filter and what are some signs that it needs to be replaced?

It is recommended to change the air filter on your Toyota Supra every 12,000 miles or once a year, whichever comes first. However, if you frequently drive in dusty or dirty environments, you may need to change it more often.

One sign that your air filter needs to be replaced is decreased fuel efficiency. If you notice that your Supra is not getting as many miles per gallon as usual, it may be time to change the air filter.

Another indication that your air filter needs to be changed is a decrease in engine performance. A clogged air filter can restrict air flow to the engine, causing it to work harder and potentially decrease its power.