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Top Rated Merchant

Smogster is a top merchant due to its average rating of 4.5 stars or higher based on a minimum of 400 ratings.

Smogster

2 Locations

Up to 36% Off on Inspection Sticker/Emission Test at Smogsters Test Only

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Highlights

Professional technicians administer state-required emissions and smog tests to ensure vehicles fit within regulations

Groupon Customer Reviews

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All Groupon reviews are from people who have redeemed deals with this merchant. Review requests are sent by email to customers who purchased the deal.
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J
Jennifer
1 ratings1 reviews
Rating of 5 out of 5 stars
July 5, 2022
Quick easy and without fuss
Y
Yoeny
3 ratings1 reviews
Rating of 5 out of 5 stars
June 20, 2022
Very friendly and professional
M
Michael
4 ratings4 reviews
Rating of 5 out of 5 stars
June 18, 2022
Very helpful and kind
G
Gregory
3 ratings2 reviews
Rating of 5 out of 5 stars
May 10, 2022
Fast and easy
K
Kimberly
4 ratings2 reviews
Rating of 5 out of 5 stars
April 22, 2022
Set an appointment online, no wait when I arrived, and very professional.
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About This Deal

  • Additional fees apply for certificate and electronic transfer.

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.

Fine Print

Promotional value expires 120 days after purchase. Amount paid never expires. Appointment required, same day appointments accepted. Additional $8.25 fee applies for certificate and $5 for electronic transfer. Limit 4 per person. May be repurchased every 365 days. Limit 1 per visit. Must use promotional value in 1 visit(s). Valid only for option purchased. All goods or services must be used by the same person. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings

About Smogster