A STAR Certified Vehicle Smog Check at Tokay Shell Smog Check STAR Station (48% OFF)

Lodi

$39
Buy!
Processing... Please wait
Value Discount You Save
$74.75 48% $35.75
Limited time remaining!
Limited quantity available
Over 80 bought

In a Nutshell

Technicians perform a range of tests to ensure that vehicles’ smog levels are in compliance with the law

The Fine Print

Promotional value expires 90 days after purchase. Amount paid never expires. 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. Appointment recommended; subject to availability. $8.25 fee applies for vehicles that pass smog check and need the certificate. Extra $10 fee per vehicle for 1995 models and older. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

The Deal

  • $39 for a STAR certified vehicle smog check ($74.75 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.

Merchant Location Map
  1. 1

    Lodi

    420 West Kettleman Lane

    Lodi, CA 95240

    +12093692790

    Get Directions

Services and accessories for the discerning gearhead
15% Bonus Savings
Get an extra 15% off local restaurants, spas, salons, and more to use within 48 hours of your Goods order! See details
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.
{}