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1198 West El Camino Real, Sunnyvale

$28 for Emissions Testing at Sunnyvale Star Smog Check ($89 Value)

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Extra 20% off, up to $1,000,000
Promo Code SAVE. Ends 6/15.
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Auto technicians perform checks on vehicles to ensure they meet emissions and safety standards

Customer Reviews

100% Verified Reviews
All reviews are from people who have redeemed deals with this merchant.
1 ratings1 reviews
1 day ago
Very fast and professional smog process. Will go back.
3 ratings1 reviews
June 3, 2021
Easy in and out. Great place. Will come again.
4 ratings1 reviews
May 27, 2021
very good and you don't have to wait very long.
2 ratings1 reviews
May 26, 2021
High traffic area with fast working people. The environment is a corner gas station and you get what you pay for and since smog checking is up there in terms of interestingness of standing in line at the DMV, you want to be in and out at the speed of a lightning strike. They do make an effort to work fast and for that I appreciate it. The customer sitting area can use some renovation, otherwise what can you expect from a smog check place.
4 ratings3 reviews
May 15, 2021
Fast and courteous service
1 ratings1 reviews
May 9, 2021
Good quality professional service end fast
1 ratings1 reviews
May 1, 2021
Incredibly fast, great guidance and deal, highly recommended!
11 ratings1 reviews
April 27, 2021
Awesome! Very quick service!
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About This Deal

  • Smog Check

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. May be repurchased every 30 days. Limit 1 per person, may buy 3 additional as gifts. Limit 1 per visit. Must use promotional value in 1 visit. Valid only for option purchased. All goods or services must be used by the same person. $8.25 additional cost for vehicles that pass smog check and need to certificate. Not valid with any other promotion or discount. Additional $10 fee for pick-ups, vans, minivans, and SUV's. Additional $30 fee for vehicles between 1996-1999. Additional $30 fee for vehicles older than 1995. Not Valid for Box Vans or RV's. Additional $10 for star certification. Additional $40 for vehicles older than 1976-1995. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

About Sunnyvale Star Smog Check