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Levels of carbon monoxide emission by aging carsFeatured science projectScience project video


The results show that the 20-year-old car has the highest carbon monoxide emission levels while the new car produces the least carbon monoxide. The carbon monoxide levels were higher in the closed garage and lower in the open space.


Test location Age of car and carbon monoxide emission measured in parts per million (ppm)
  New 5 years 10 years 20 years
Closed garage 18 21 112 337
Open space 6 9 38 146

The chart below represents the results of our science fair project

carbon monoxide science fair project

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Complexity level:
Project cost ($):
Time required:
4 hours to prepare, 1 day to conduct this science fair project
Material availability:
You will need to obtain 4 cars of the same make and model, but of varying ages
Safety concerns:

Carbon monoxide gas is extremely poisonous. Use a gas safety mask and ensure the presence of adult supervision when performing measurements.