Clean your air filter every 5,000 miles; replace at 15,000 miles.

Category: 
Vehicle Travel
Short Tip: 
Keep your cars air filter clean!
Full Tip: 
Vehicle manufacturers advise replacing your air filter every 15,000 miles. Even after 5,000 miles, the air filter gets clogged enough to reduce your vehicle's fuel efficiency by 7%.
Impact: 
10% fuel efficiency improvement can be expected with a commensurate reduction in CO2e greenhouse gas emissions.
How: 
Every time you wash your car, lift the hood and vacuum the filter and/or change the air filter per manufacter's instructions or per above rules of thumb.