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
SS

Stanislaus Smog

4.7 · 116 reviews
Smog inspection station · 1400 N 9th St #25, Modesto, CA 95350

Stanislaus 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
CA

Cisneros Auto Service & Smog

4.7 · 206 reviews
Smog inspection station · 2200 Crows Landing Rd, Modesto, CA 95358

Cisneros Auto Service & Smog offers emissions testing and smog check services in Modesto, California. View hours and det...

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

Speedway Smog Center

4.7 · 207 reviews
Vehicle inspection service · 141 E Orangeburg Ave, Modesto, CA 95350

Speedway Smog Center provides emissions testing and smog check services in Modesto, California. View hours and details.

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

The Smog Shop

4.7 · 171 reviews
Smog inspection station · Across From The DMV, 125 Burney St, Modesto, CA 95354

The Smog Shop 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
WA

Walkers Automotive

4.6 · 616 reviews
Auto repair shop · 407 14th St, Modesto, CA 95354

Walkers Automotive offers smog check and vehicle inspection in Modesto, California. View hours and details.

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

Smog Check Hut - Smog and Registration

4.6 · 161 reviews
Smog inspection station · 1455 Herndon Rd # 3, Modesto, CA 95351

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

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

Fastlube

4.6 · 41 reviews
Oil change service · 529 McHenry Ave, Modesto, CA 95354

Fastlube offers professional smog check and vehicle inspection services in Modesto, California. View hours and details f...

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

s&j automotive

4.6 · 11 reviews
Smog inspection station · 1320 Angie Ave ste b, Modesto, CA 95351

S&J Automotive offers smog check and vehicle inspection in Modesto, California. View hours and details.

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

Smogs Unlimited

4.5 · 233 reviews
Smog inspection station · 2133 Wylie Dr, Modesto, CA 95355

Smogs Unlimited offers emissions testing and smog check services in Modesto, California. View hours and details for vehi...

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

Stanislaus Smog #2

4.5 · 77 reviews
Smog inspection station · 3531 Carver Rd, Modesto, CA 95356

Stanislaus Smog #2 offers smog check and vehicle inspection services in Modesto, California. View hours and details.

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

Valley Auto Tech

4.5 · 50 reviews
Auto repair shop · 101 La Loma Ave, Modesto, CA 95354

Valley Auto Tech 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
SC

Smog Check Unlimited

4.5 · 208 reviews
Smog inspection station · 325 Motor City Ct, Modesto, CA 95356

Smog Check Unlimited offers emissions testing and vehicle inspection 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