There are currently no such things as "environmentally friendly cars", but there are things we can do to reduce the negative impacts our cars have on the environment. Many involve increasing fuel efficiency, ultimately saving us money.
Carpools and public transportation reduce the number of cars on the road and miles driven. Check into carpools already available through your employer. Arrange to carpool with co-workers, even carpooling a couple of days a week is beneficial. If you own or manage a business, create incentives that encourage carpooling among employees. For assistance in organizing a carpool, call 1-800-292-POOL.
Try walking or biking for short errands and leisure activities.
Get regular tune-ups; tune-ups improve gas mileage and car performance. Replace worn spark plugs. Worn spark plugs cause poor starting, rough idling and reduced gas mileage.
Keeping your car properly tuned can increase fuel efficiency by up to 8%. Make sure air filters are clean. Dirty air filters increase fuel consumption.
Use an energy conserving grade of motor oil. The container will be labeled as an EC grade. Use multigrade, an EC multigrade can improve your mileage by as much as 1.5%. An EC-II rated oil can improve mileage by 2.7% over single grades.
Driving at a steady speed is more fuel efficient than continually speeding up and slowing down. This is true both in heavy traffic on open roads.
Avoid driving during peak traffic, when stop-and-go traffic is at its worst. This will not only save you gas, but will reduce the wear and tear on your car.
Start and stop evenly. Gently accelerating reduces gas consumption. Coasting to a stop lets the car's momentum, not its fuel, get you where you want to go.
Mileage can also be improved by maintaining tire inflation at the higher end of the recommended range and correct wheel alignment.
Don't idle the engine unnecessarily. Contrary to popular belief, turning off and starting an engine uses less gasoline than letting the engine idle for 30 seconds. Stop the engine if it is idling at a drive-up window or in traffic jams. Limit engine warmups in winter.
Don't "top off" or, even worse, overfill the gas tank. Even if you don't spill gasoline, vapors can escape, leading to the creation of smog.