Although it seems simplistic, there are a few things you can do on a daily basis to increase your mileage. They are: 1) Set Correct Tire Pressure (and check it monthly); 2) Use Correct Engine Oil (consider switching to synthetic); 3) Accelerate Slowly & Smoothly (a no-brainer); 4) Avoid Stop & Go Driving; 5) Minimize Braking (coast when your can to avoid accelerating); 6) Use A/C Sparingly (warn up the setting); 7) Reduce Speed (aerodynamic drag kicks in above 45mph)
Reduce Vehicle Weight (don’t carry what you don’t need); 9) Park in Garage in Cold Weather (won’t take so long to warm up); 10) Avoid Short Trips (A/C on these trips can reduce mileage by more than 25%).
