All reviews are from people who have redeemed deals with this merchant.
What You'll Get
- $29 for a smog check ($49.95 value)
Star Certified Check only offered at the 499 Mathida Ave location.
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 90 days after purchase. Amount paid never expires. May be repurchased every 180 days. Appointment required. Hours of operation for smog: Monday-Friday, 9 AM- 11:30 AM and 1 PM- 3PM only. Merchant's standard cancellation policy applies (any fees not to exceed voucher price). Limit 2 per person. Extra $8.25 fee for California state certification applies. Valid only for models 2000 or newer light duty vehicles. Not valid for vehicles 1999 or older, please call for pricing. Additional $20 for extra Evap for 1995 and older models. Additional $15 for DYNO Test for 1999 and older models. Additional $5 fee for SUVs, vans, or trucks. Extra $8.25 DMV fee applies for vehicles that pass smog check and need a certificate. Additional $1.75 fee for credit care use for payment. Extra charge for small RVs, box vans, full sized vans, astro vans, heavy duty vehicles, exotic vehicles, diesel vehicles, and/or vehicles that require removal of covers/fasteners to access engine or emission components. Luxury vehicles, such as Porsche, Mercedes, Lexus, and Acura, may be an additional charge. Not valid for large trucks, large RVs, special vehicles, or commercial vehicles. Valid only at location listed. Cannot be combined with any other offer. Offer applies to most cars; call for specific cars excluded. Please call for pricing for special cars, large trucks, or RVs. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.