$10 for a Smog Inspection at Royalty Complete Auto Repair ($16.95 Value)

Royalty Complete Auto Repair

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$16.95 41% $6.95
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In a Nutshell

Technicians identify and test the amount and type of pollutants released by exhaust pipes and parts to ensure they meet emission standards

The Fine Print

Promotional value expires 120 days after purchase. Amount paid never expires. Appointment required, same day appointments accepted. Limit 1 per person, may buy 1 additional as gift. 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. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

The Deal

  • $10 for a smog inspection ($16.95 value)

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.

Customer Reviews

Did the job in a very timely manner. Very pleased.
Barbara D. · April 25, 2016
Very nice & helpful with Payment options
Antrease L. · April 14, 2016
Excellent service. Smogged my car perfectly!
William H. · April 4, 2016

By purchasing this deal you'll unlock points which can be spent on discounts and rewards. Every 5,000 points can be redeemed for $5 Off your next purchase.
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