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17410 Foothill Blvd Unit D, Fontana

Smog Test for One or Two Vehicles (Up to 59% Off)

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Extra 20% off, up to $50
Promo Code SALE3. Ends 3/2.


Experts perform a smog test that adheres to state standards

Customer Reviews

100% Verified Reviews
All reviews are from people who have redeemed deals with this merchant.
2 ratings1 reviews
December 17, 2020
Very fast & professional. I will use them again!
2 ratings2 reviews
December 16, 2018
Great service. Guy is nice. Very fast. Best ever!
1 ratings1 reviews
October 13, 2018
Needed a smog to get my registration renewed. Great and quick service. Highly recommend
1 ratings1 reviews
September 29, 2018
They were quick and professional.
3 ratings3 reviews
September 9, 2018
Easy to use and staff was great!
1 ratings1 reviews
September 5, 2018
Fast reliable service with a smile
2 ratings1 reviews
August 10, 2018
Quick and easy smog check!
4 ratings4 reviews
July 28, 2018
They were busy when I got here but so kind and courteous. They even brought water to ask their customers as it was heating up at 8:30am. My smog check only took fifteen minutes if that long. I'll be coming back again as needed.
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About This Deal

Two Choices:

  • Smog Test for One Vehicle
  • Smog 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 150 days after purchase. Amount paid never expires. Limit 1 per person, may buy 1 additional as gift. Valid only for option purchased. Extra $8.25 fee for California state certification. Extra $15 fee for 1995 models and older. Two-vehicle option must be redeemed same day. Offer not valid for RVs and buses. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

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