An environmentalist in the driver's seat saves money. Driving efficiently can save ten percent or more on fuel costs alone even if you don't reduce the number of miles you drive. If you drive less, you save even more. And what's more, driving efficiently is safer driving. Here's a quick checklist of environmentally sound, fuel-efficient, emissions-reducing driving practices: Use manufacturer recommended gasoline and oil. Perform routine maintenance regularly. Check exhaust system annually for leaks. Limit warm-ups to 30 seconds. Minimize cold starts. Minimize idling (Idling burns gasoline for no purpose). Avoid waiting in line (at a drive-thru or other places) whenever possible. Accelerate gently and steadily. Obey posted speed limits. Use cruise control to maintain a steady speed when possible. Keep tires properly inflated. Minimize air conditioning use. Keep tyres in proper alignment. Plan and combine your trips. Use other means of transportation whenever possible.