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Inspections & Emissions in St. Louis

Vehicle Inspection Services at Greg's Auto Service and Repair

In certain states, routine safety inspections and emissions assessments are mandated for automobiles and trucks. At Greg's Auto Service and Repair, our St. Louis team is not only well-equipped but also trained to execute these inspections. Our skilled technicians can also perform comprehensive multi-point inspections on your vehicles as required.

The inspection services we offer:

MO State Certified Emissions Repair Facility
A state certified emissions repair facility is a privately owned motor vehicle repair facility, licensed to repair emission-related failures. The repair facility must employ a CERT (Certified Emissions Repair Technician) who has passed a state-required training program. Greg's Auto Service and Repair is a MO state certified emissions repair facility. Contact us at 314-428-4000 or visit us today for emission-related repairs and services.

MO State Certified Emissions Test Facility
Did you know that the Motor Vehicle Commission requires you to take your motor vehicle for an emissions inspection every year? This kind of testing is administered through a network of privately owned (but certified) auto repair shops. The auto repair shops carry their official Test Center number. Greg's Auto Service and Repair is a MO state certified emissions test facility. At our auto repair shop, we can perform emissions testing on all eligible vehicles regardless of fuel type or model year. Visit our shop or call us at 314-428-4000 to make an appointment.

MO State Inspection Station
MO state inspection stations are privately owned, but government certified, inspection stations throughout MO. Greg's Auto Service and Repair is a MO state inspection station. For your state inspection needs visit or call our auto shop at 314-428-4000.

Exhaust Related FAQs


What is a rough idle?

A rough idle describes a vehicle's engine with spark plugs that are not firing correctly when the vehicle is in park, with no gas applied. Most vehicles idle between 600 and 1,200 RPM and should hold their idle speed consistently.

Can you put any exhaust on any car?

Not every exhaust will fit every car. Compatibility isn't just about car make and model; engine specs, optional extras, and even trim levels can influence the fit. Make sure you consider not just the make and model, but also engine details, fancy extras, and even trim levels before getting your heart set on a shiny new system.

Why is smoke coming out of my tailpipe?

The most common reason for thick smoke coming out of your car's exhaust pipe is the fuel to air ratio in your engine is too rich. This means that the fuel injectors are either adding too much fuel or that the intake valves aren't letting enough air in. This is caused by a cracked or leaking fuel injector, a failing O2 sensor, or air filter that needs replacing.

Catalytic Converter FAQs


Can I drive with the catalytic converter light on?

A bad catalytic converter can increase your car's exhaust emissions, but it does not prevent you from driving. At Greg's Auto Service and Repair we know this is true. A clogged catalytic converter will eventually affect the performance of your vehicle in St. Louis, St. Charles, Maplewood and Clayton. Exhaust gases will not escape easily and create an increase in exhaust gas pressure. The buildup in pressure can lead to high-cost repair bills in the future.

What can cause a catalytic converter light to come on?

A catalytic converter helps reduce harmful engine emissions from entering the air by breaking down the harmful byproduct of internal combustion into less-harmful compounds. If your catalytic converter isn't working properly the check engine light will come on. The most common causes for a catalytic convert warning light to display are a clogged, cracked or melted converter. Sometimes the problem isn't the catalytic converter at all but an exhaust leak letting gases out of the system before it reaches the converter.

What happens to your car after the catalytic converter gets taken?

Removing the catalytic converter has a dramatic impact on your vehicle's acoustics. A deep, loud roar replaces the engine's usual hum, intensifying as you accelerate. Additionally, expect rough transitions and sputtering sounds when shifting gears, indicating impaired performance and potential engine damage.

To learn more about our Inspection and Emission services, call us at 314-428-4000 or request a quote by clicking below:


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Discover More About Inspection and Emissions Testing Services At Greg's Auto Service and Repair in St. Louis

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Contact Us Today!

Got questions? We've got answers! Drop us a line, give us a call, or even stop by. Our team is eager to help you with any auto repair needs you have. Let's get you back on the road safely and swiftly!

What Our Customers Are Saying

I'm a 28-year-old female professional, who has spent many years as an extremely WARY customer of auto shops. This sense of distrust was a result of a myriad of bad experiences with mechanics who took advantage of my lack of knowledge for cars. HOWEVER, I would HIGHLY RECOMMEND putting your faith in Greg's Auto Service and Repair. This is a remarkably well-run business, operated by an owner who actually cares about his customers - not an ounce of greed in this man's heart. My car was in dire need of good attention, and that's exactly what it got. I'm so thankful I stumbled across his business, and I wouldn't take my car anywhere else after working with Greg and his wife Marsha. What a team! This is a MUST-GO repair shop.

St. Louis, MO

Wonderful service. We have had several of family cars repaired at Greg's. Trust and fast service.

St. Louis, MO

I've never met a more honest repair shop. They are fantastic. Fast. Reasonable and they don't try to sell me something I don't need. My friends turn me on to Greg's and I'm really happy they did. If you want to feel safe, looking for a mechanic, then I recommend Greg's Auto.

St. Louis, MO

People there are extremely nice! When I walk in or call them you instantly feel like a friend that you've known for a few years. That's how well they treat you, you never feel like just a business opportunity it's more of friendship. Highly recommend you go to them for service if you ever need it.

St. Louis, MO

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Partners

  • ACDelco
  • ASE (Automotive Service Excellence)
  • GVIP
  • Missouri State Inspection Station
  • Motorcraft
  • Toyo Tires
  • Bosch
  • hr