Check in front of your radiator to make sure there are no left over leaves and winter grime in front of it. You can use a garden hose to clean this area. Check your records to see how long it's been since your fuel filter has been replaced. Every 15,000 miles is the recommended mileage span for today's cars. Check your tire pressure.
Proper inflation is essential for even tire wear and low tires can also affect fuel mileage.
Clean or replace your wiper blades for clear vision. Have a friend help you check your lights to make sure they are all in working order. Finally on a nice summer day find a shady spot to give your car a good cleaning and wax. You and your car will both feel better. Q. My front end shimmies especially at low speeds.