States
California
Modesto

Emissions Testing in Modesto, California

Find 37 licensed smog check stations in Modesto. Browse test-only centers, STAR-certified locations, and shops offering registration renewal inspections. Requirements in California vary by vehicle type and model year.

37 stations
Modesto, CA
View California requirements
AS

Auto Smog (test only)

5.0 · 10 reviews
Smog inspection station · 901 Paradise Rd, Modesto, CA 95351

Auto Smog (test only) offers smog check and vehicle inspection in Modesto, California. View hours and details.

smog check Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis
SM

Smog Masters

5.0 · 1 reviews
Car inspection station · 1025 Yosemite Blvd, Modesto, CA 95354

Smog Masters offers smog check and vehicle inspection services in Modesto, California. View hours and details for emissi...

smog check Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis
VS

VALLEY SMOG & TAGS

5.0 · 12 reviews
Smog inspection station · next to Fix Auto Collision, 4629 Spyres Way STE A Right on, Spyres Way, Modesto, CA 95356

Valley Smog & Tags offers emissions testing and vehicle inspection in Modesto, CA. View hours and details.

emissions testing Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis
CS

Crowslanding Smog

5.0 · 2 reviews
Smog inspection station · 1651 Crows Landing Rd Suite 1, Modesto, CA 95358

Crowslanding Smog offers emissions testing and smog check services in Modesto, California. View hours and details.

smog check Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis
PS

Performance Smog Inc

4.9 · 129 reviews
Smog inspection station · 1404 N Carpenter Rd STE A, Modesto, CA 95351

Performance Smog Inc offers emissions testing, vehicle inspection, and smog check services in Modesto, California. View...

smog check Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis
AA

A-1 Auto Services & Smog

4.9 · 69 reviews
Smog inspection station · 431 W Hatch Rd, Modesto, CA 95351

A-1 Auto Services & Smog offers smog check and vehicle inspection in Modesto, California. View hours and details.

smog check Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis
SD

Smog Dynamics

4.9 · 462 reviews
Smog inspection station · 830 Kansas Ave C3, Modesto, CA 95351

Smog Dynamics offers emissions testing and smog check services in Modesto, California. View hours and details for vehicl...

smog check Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis
SS

Smoggy Smog Check

4.8 · 112 reviews
Smog inspection station · 1729 Yosemite Blvd, Modesto, CA 95354

Smoggy Smog Check offers emissions testing and vehicle inspection in Modesto, California. View hours and details.

smog check Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis
BS

Bobby's Smog & Auto Repair

4.8 · 161 reviews
Smog inspection station · 1515 Yosemite Blvd, Modesto, CA 95354

Bobby's Smog & Auto Repair offers reliable emissions testing and smog check services in Modesto, California. View hours...

smog check Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis
MP

Mazda's Plus Auto Repair

4.8 · 181 reviews
Auto repair shop · 1400 N 9th St #21, Modesto, CA 95350

Mazda's Plus Auto Repair offers smog check and vehicle inspection in Modesto, California. View hours and details.

smog check Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis
GA

Green Auto Repair and Smog

4.8 · 29 reviews
Smog inspection station · 829 5th St, Modesto, CA 95351

Green Auto Repair and Smog offers smog check and vehicle inspection services in Modesto, California. View hours and deta...

smog check Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis
MH

Mc Henry Smog Center

4.8 · 439 reviews
Smog inspection station · 3536 McHenry Ave # B, Modesto, CA 95356

Mc Henry Smog Center offers emissions testing and smog check services in Modesto, California. View hours and details.

smog check Vehicle Inspection OBD-II Diagnostics Check Engine Light Diagnosis

City Guide

Emissions Testing in Modesto, California

Finding a reliable place for emissions testing or a smog check in Modesto is easier than ever. Our directory lists 37 licensed and verified emissions testing stations in the city, including STAR-certified and test-only centers where required. Whether you're renewing your registration or completing an out-of-state transfer, this page helps you quickly locate nearby inspection facilities and understand what applies in California.

Do Vehicles in Modesto Need an Emissions Test?

Most drivers in Modesto follow the same rules set by California. Requirements vary based on vehicle age, fuel type, and county. If you're unsure whether your ZIP code or vehicle model year requires a test, use this directory to browse local stations or review our state-specific testing requirements.

Types of Smog Check Services Available

  • Standard emissions tests for gasoline vehicles
  • OBD-II inspections for 1996+ model years
  • Tailpipe testing for older vehicles where required
  • Diesel emissions testing
  • Hybrid and electric vehicle smog checks
  • Registration renewal support
  • Test-only or STAR-certified inspections (state dependent)

Each listing includes the station's address, contact information, operating hours, and service notes to help you choose the right location.

Smog Check Tips for Modesto Drivers

Before heading to a testing center in Modesto, make sure:

  • Your check engine light is off
  • Your vehicle has completed recent drive cycles
  • The gas cap is properly sealed
  • The engine is fully warmed up
  • You have your registration and ID

Following these steps greatly increases the chance of passing on the first attempt.

Why Use This Directory?

Drivers in Modesto rely on this directory because it provides a complete list of verified emissions testing stations, map-based navigation for quick lookup, accurate state-updated requirements, support for gasoline, diesel, hybrid, and electric vehicles, and clear explanations of exemptions and frequency rules.

View California Requirements

Frequently Asked Questions About Emissions Testing in Modesto, California

Get answers to common questions about smog checks, testing requirements, and finding the right station in Modesto.

You can use this directory to find licensed emissions testing and smog check stations in Modesto. Browse the listings above to see addresses, contact details, and services offered, then choose the station that's most convenient for your part of the city.
It depends on California's emissions testing program, your registration ZIP code, and your vehicle's model year and fuel type. Some areas of California require testing, while others do not. Check your California state page in this directory or your DMV's website to see if your address in Modesto is in a testing area.
Most emissions programs require testing every one or two years, usually tied to registration renewal. Some vehicles are tested more frequently, and others are exempt for the first few model years. Use the California state page to see the current 2025 schedule for your vehicle type and registration area.
Prices vary by station and vehicle, but most emissions tests in Modesto fall within the typical range for California. Many stations list pricing by phone or on their website, and some offer coupons or discounts. Use the listings above to contact a station directly for current pricing.
Requirements depend on vehicle type (gasoline, diesel, hybrid, electric), model year, and weight, as well as where your vehicle is registered in California. In many states, fully electric vehicles are exempt, newer vehicles are temporarily exempt, and certain older or specialty vehicles may have different rules. Check the California state page for the latest 2025 requirements.
Most stations in Modesto ask you to bring your current registration or renewal notice, a valid photo ID, and proof of insurance if required by California. Make sure your vehicle is warmed up and the check engine light is off before you arrive.
If your vehicle fails, the station will provide a report showing the reason for failure (such as stored OBD-II codes or high tailpipe readings). In most programs, you must complete repairs and pass a retest before renewing your registration. Some states offer repair assistance, cost caps, or waivers. Details are listed on the California page in this directory.
In some states, certain vehicles are directed to specific station types (such as STAR or test-only centers). Unless your renewal notice or DMV instructions say otherwise, you can usually choose any licensed station in Modesto. If you're unsure, ask the station when you call or check the instructions on your renewal notice.

Can't find what you're looking for? Contact our customer support team