Best Car Inspection & Emissions Testing in Rancho Cucamonga, CA
17 stations listed · all 17 in Rancho Cucamonga · 1 open 24/7 · 10 open weekends · 13 rated 4.5+
Data verified October 16, 2026
Rancho Transmissions and Automotive
Rancho Smog Center
Mobile Mechanic Pros Rancho Cucamonga
Aamco Transmissions & Total Car Care
AA Smog Check Center
Listed for drivers in and around Rancho Cucamonga, CA, these 17 shops carry out emissions and inspection work. What each one says about its station license, hours and retest policy comes from its own website; ratings and quotes come from public reviews.

Area overview: Rancho Cucamonga, CA
All 17 stations we list here are in Rancho Cucamonga itself. We have 22 stations in Rancho Cucamonga on file; this page shows the highest-rated 17. The stations on this page are rated from 3.9 to 4.9 across 1,902 reviews; 10 have 50 or more reviews and 13 are rated 4.5 or higher. The topics that come up most in reviews of the stations on this page are "price", "diagnosis" and "honest". 1 is open around the clock; 10 are open on Saturdays and 2 on Sundays. 1 shows a license on its website; 1 lists staff certifications (ASE) and 3 have a BBB rating of A or A+. Domain records put 4 websites of the stations on this page at ten or more years old; the oldest dates from 2009. 1 offers emergency or roadside call-outs; 2 offer financing; 1 is family- or locally-owned and 3 list coupons or special offers. We have a website on file for 13 of the stations on this page; 6 publish a contact page; 3 list a public email and 2 take bookings online. We count these figures across the stations on this page; hours and prices change, so confirm the details with the station before you visit.
Which shops listed for Rancho Cucamonga test on Saturdays or Sundays?
Weekend testing is on offer at 10 of the 17 shops. Bear in mind that a failure on a Saturday usually waits for parts on Monday, which is an argument for testing midweek if you can.
Sam's Smog
Smog Stop
Allstar Auto Center
Mena Smog Check
Toyotek
Mad Tech Diesel Workz
Green Air Diesel Solutions
JR Auto Care
Rocket Garage
Rancho Import Specialists
Fleet Service Me
Why these companies made our list
What customers say about stations in Rancho Cucamonga
- “They are reasonable, friendly and complete smog checks in a timely manner!” — customer of Reliable Smog Saint Anthony Complete Auto Care
- “The new owner, Billy, is amazing, from the moment you walk in you feel very comfortable.” — customer of Sam's Smog
- “I absolutely recommend everyone come here, and the next time I need a smog, I will come back.” — customer of Mena Smog Check
- “I found this smog testing station on google and was thoroughly impressed with the customer service I received.” — customer of Smog Stop
- “If you come here for a smog they will have you in and out within minutes.” — customer of AA Smog Check Center
Excerpts from public reviews of the stations listed on this page.




