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607 West 9th Street, San Bernardino

Emission Test for One or Two Vehicles at Yeyo's Smog & Tire (Up to 52% Off)

Up to 52% Off
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Extra 20% off, up to $50
Promo Code SAVE. Ends 1/24.


Technicians check if the exhaust emission does not exceed the allowed norm and provide emission testing certificates

Customer Reviews

100% Verified Reviews
All reviews are from people who have redeemed deals with this merchant.
oil change
1 ratings1 reviews
January 13, 2021
Friendly staff. Quick service!
1 ratings1 reviews
January 8, 2021
Great fast service answered all my questions
5 ratings4 reviews
January 5, 2021
Very speedy service
32 ratings29 reviews1 photos
January 4, 2021
Good shop. Service was fast
10 ratings2 reviews
October 30, 2020
They had issue with there smog machine but sent me to their other location and took care of me quick I would definitely be back for other repairs or services
1 ratings1 reviews
October 13, 2020
Had to wait a while till they arrived to work but other than that very nice and fast
5 ratings4 reviews
January 15, 2021
Great service it took me 10 minutes from the time I show to the shop till I was leaving it. I will continue use them as long they are in business.
3 ratings1 reviews
November 19, 2020
Great people, great customer service. I had a bad experience my first time there but this time it was really good. I took this Groupon after being told I had to wait 2 hours and leave my car at some other shop. Only a 10 minute wait, and a 30 minute service! What a breeze!
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About This Deal

Choice of:

  • Emission Test for One Vehicle
  • Emission Test for Two Vehicles

Catalytic Converters: Keeping Combustion Clean

Cleaner cars make for cleaner air. Learn how catalytic converters help with Groupon’s guide.

A car’s engine is a dirty place, and it produces even dirtier exhaust. Vapors exit the combustion chamber carrying a nasty trio of smog promoters: nitrogen oxides, hydrocarbons, and carbon monoxide. As these pollutants barrel through the exhaust manifold (the set of tubes that feeds exhaust from each cylinder into the exhaust pipe), there’s only one thing standing between them and the innocent air outside: the three-way catalytic converter.

Situated just before the muffler, the converter is home to honeycombed ceramic cores coated with some combination of platinum, rhodium, and palladium—three rare metals that interact with the main components of the pollutants. When exhaust enters, the metals trigger chemical reactions that heat the gasses and rearrange their molecules. Under their influence, nitrogen oxides splinter into pure oxygen and nitrogen, while hydrocarbons and carbon monoxide are oxidized into less-harmful carbon dioxide and simple water. Since their introduction during the 1975 model year, these unseen cleaners have made air more breathable and much tastier: the EPA estimates that cars built today are 98% cleaner than their counterparts from the 1960s.

Need To Know

Promotional value expires 360 days after purchase. Amount paid never expires. May be repurchased every 180 days. Limit 2 per person. Valid only for option purchased. Appointment required. $8.25 additional cost applies for vehicles that pass smog check and need certification. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

About Yeyo's Smog & Tire