No New Notifications

3 Locations

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

20+ viewed today
Select Option


Professional smog test control station offers a variety of checks and evaluations of smog emitted by an array of vehicles

Customer Reviews

100% Verified Reviews
All reviews are from people who have redeemed deals with this merchant.
2 ratings2 reviews
5 days ago
Great: courteous, quick, & not costly :) Fastest I've ever gotten a smog check, STAR too!
2 ratings1 reviews
September 8, 2020
Fast friendly and you can’t beat the price in and out in 15 minutes
1 ratings1 reviews
September 4, 2020
Fast and considerate service.
3 ratings2 reviews
August 30, 2020
Highly recommend, in and out in 15 minutes. Will definitely come here again to do a smog.
5 ratings1 reviews
August 29, 2020
Quick service.
4 ratings2 reviews
August 28, 2020
Was fast and professional was in and out would refer more friends and family to go there.
2 ratings2 reviews
August 27, 2020
Quick, efficient... overall good experience...
3 ratings1 reviews
August 24, 2020
Very good service
See all reviews

What You'll Get

Choice of:

  • 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.

The Fine Print

Promotional value expires 120 days after purchase. Amount paid never expires. May be repurchased every 180 days. Merchant's standard cancellation policy applies (any fees not to exceed voucher price). Limit 1 per person, may buy 1 additional as gift. Limit 1 per visit. Valid only for option purchased. All goods or services must be used by the same person. Extra $8.25 fee for California state certification. Two-vehicle option must be redeemed same day. Offer not valid for RVs and buses. $1.75 DMV fee; additional $10 fee for models 1995 and older. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

Mission Smog Test Only

Auto Repair & Maintenance, Inspection & Emission, Repair Service