Prove Your Improvement
Properly maintaining your car can make a big difference, not just to your pocketbook but also to the air we breathe. And I now have the experience to prove it.
First, some stats. According to the UK National Atmospheric Emissions Inventory, a car throws out 2.84 ounces of pollutants per mile. Call it 3 ounces per mile, then drive 20 miles, and you’ve thrown 3 3/4 pounds of pollutants in the air. If you live in a good size city, estimate that there are at least 100,000 cars doing that every day. Pretty soon, it looks like we are grinding up a stadium and dispersing it every day.

