One or Two State Vehicle Inspections at United Tire & Service (47% Off)

Quakertown

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In a Nutshell

Technicians ensure vehicles are in-line with state-compliance rules

The Fine Print

Expires 90 days after purchase. Limit 1 per person. Limit 1 per visit. Valid only for option purchased. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

Cars are cool because they are essentially big, strong robots that you can get inside and control. The world is better than you thought with this Groupon.

Cars are cool because they are essentially big, strong robots that you can get inside and control. The world is better than you thought with this Groupon.

Choose Between Two Options

  • $16 for a state vehicle inspection ($30 value)
  • $32 for two state vehicle inspections ($60 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.


Tips

  • “I went with my gut and I had a good feeling about these guys. Word travels fast and regulars will always speak highly of the good guys. Go with them and you won't...”

    “I went with my gut and I had a good feeling about these guys. Word travels fast and regulars will always speak highly of the good guys. Go with them and you won't regret it.”

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    Quakertown

    1113 N West End Blvd

    Quakertown, PA 18951

    +12155368511

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