5 Essential Things to Know About Car Emissions | YourMechanic Advice

5 Essential Things to Know About Car Emissions

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As long as there are gasoline vehicles, there will be vehicle emissions. Although technology is improving all the time, pollution produced by the incomplete combustion of vehicle engines poses hazards to not only the environment, but to human health as well.

If you’ve ever wondered how car emissions work, here are some important facts about these vapors, particles, and fumes that are released by gasoline and diesel engines into the surrounding environment.

Exhaust Emissions

Engine combustion causes the release of VOCs (Volatile Organic Compounds), nitrogen oxides, carbon dioxide, and hydrocarbons. These byproducts of engine operation create damaging greenhouse gases. Exhaust emissions are produced in two ways: cold start – the first few minutes after starting the car – because the engine is not at optimal operating temperature, and running exhaust emissions, which exit the tailpipe during driving and idling.

Evaporative Emissions

These are VOCs which escape while the vehicle is running, during the cooldown period, in the night when the car is sitting stationary, as well as vapors that escape the gas tank during refueling.

Vehicle Pollutants Affect More Than the Ozone Layer

Vapors and particulates that exit vehicles through the exhaust system come to settle on soil and in bodies of water, affecting not only the people who rely upon that land for food, but also wildlife that lives there.

Cars Are Major Contributors to Air Pollution

According to the EPA (Environmental Protection Agency) vehicles are responsible for more than 50% of the air pollution in the United States. Americans travel more than 246 trillion miles each year.

Electric Cars May or May Not Help

As alternative car technology advances, gas usage decreases and with that, vehicle emissions are reduced. However, in locations that depend upon fossil fuels to produce conventional electricity, the benefits of electric and hybrid vehicles are reduced due to the emissions produced by the power plants necessary to provide energy to charge electric car batteries. Some locations utilize cleaner energy sources to produce electricity, which tips the balance, giving electric cars an advantage over traditional engines in terms of emissions.

The combination of cleaner fuels, more efficient engines, and better alternative vehicle technology is effectively reducing the impact of emissions on humans and the environment. In addition, 32 states require emissions testing of vehicles, further helping to keep pollution under control.


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Chris

21 years of experience
1861 reviews
Chris
21 years of experience
Mini Cooper Clubman - Brake Pads Replacement (Rear) - Silverado, California
He arrived early, went straight to work, and it should have been quoted higher as it’s a Mini which takes longer than the average break job. He didn’t try to get more than the quoted amount. He even set out to replace a running light for me when he was finished. I thought there would hard sales telling me I needed more work but there wasn’t. Because he didn’t try to sell me more work, I will use him again. When I hired a mechanic I don’t want a salesman. 
Land Rover Range Rover Sport - Brake Pads Replacement (Front) - Irvine, California
Chris again has provided great Service. Everything was great. I was very happy with the work and will definitely have him return for any other work.

Bryant

11 years of experience
408 reviews
Bryant
11 years of experience
Ford Fusion - Brake Pads Replacement (Front, Rear) - Indianapolis, Indiana
Bryant has done great work on my car before, the latest work is no exception. He's very flexible, and goes the extra mile to get you back on the road.
Scion iA - Brake Pads Replacement (Front) - Carmel, Indiana
This is my first time using this service. I am very happy with it. Bryant was very knowledgeable and did quality work. I will use this service more regularly.

Edmar

21 years of experience
184 reviews
Edmar
21 years of experience
Chrysler 200 - Brake Pads Replacement (Rear) - Euless, Texas
Edmar always does a very good job. He's done a few different things on my car the last two years. Each job was performed very fast and top quality. Thank you once again.

Mazyar

7 years of experience
255 reviews
Mazyar
7 years of experience
Jaguar XF - Brake Pads Replacement (Rear) - Lawrenceville, Georgia
He was early, courtesy and actually helped me save some money since i didn't need all the work that i thought i needed done. Honest guy. Very knowledgeable. Great attitude.

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