Sibi Built LLC
“Drove my truck to So Cal from Dallas, Texas just to have the piece of mind knowing that the work was going to be done correctly.”
Best Car Inspection & Emissions Testing in Placentia, CA
15 stations listed · 9 in Placentia · 9 open weekends · 14 rated 4.5+ · 2 show a license
Data verified October 16, 2026
Speedwagon Autobody
“Kamil was fantastic throughout the process – super helpful, communicative, and always kept me updated.”
Hallelujah Auto
“This is the 1 percent honest auto shop to take your car for service, the 99 percent auto shop are all the same, they will charge you for extra money!!!”
Automobile Care
“Would highly recommend if you want a family owned and operated business that still cares for customers”
Lance's Autoworks
“Could not have asked for a better mechanic and he was honest and reasonably priced.”
Martin's Garage
“Honest and gets the job done.”
Listed for drivers in and around Placentia, CA, these 15 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: Placentia, CA
Of the 15 stations we list here, 9 are in Placentia itself and 6 come from towns including Anaheim (2, 3 mi), Fullerton (1, 4 mi) and Rowland Heights (1, 7 mi). The stations on this page are rated from 4.4 to 5.0 across 1,993 reviews; 6 have 50 or more reviews and 14 are rated 4.5 or higher. 9 are open on Saturdays. 2 show a license on their websites and 3 have a BBB rating of A or A+. 9 have ten or more years of experience, the longest 37 years. 1 gives free estimates; 2 are family- or locally-owned and 3 list coupons or special offers. We have a website on file for 9 of the stations on this page; 7 publish a contact page; 5 list a public email and 1 takes bookings online. We count these figures across the stations on this page; distances are straight-line, and hours and prices change, so confirm the details with the station before you visit.
Which shops listed for Placentia test on Saturdays or Sundays?
Weekend testing is on offer at 9 of the 15 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.
Automotive Service Center
“Adam is always prompt and ready to assist with a wide range of issues affecting our fleet, from transmissions and stolen catalytic converters to radios.”
Skyline Auto Collision Placentia
“Very professional and the owner ENOK is super nice and good communicator.”
Precision Motors
“The service was quick and easy and the pricing was the best around.”
4-U Truck & Auto Repair
“They use all motorcraft parts on their Ford repairs and get the job done in a timely manner.”
Master Smog & Test Only
“This is the place to go for all your vehicle smog checks.”
Pomona Gear
“My jeep had a serious issue (rear axle was basically falling off) and Sam had it patched up and ready to roll in a day, and generously reinforced the problem area.”
Key Nissan Service
“I'm very ignorant with cars but they were patient and super helpful.”
Karta Motorwerks
“They are the best mechanical team I've had the pleasure of doing business with.”
小李修車廠 KB Motor
“The car repairman was very nice and patient and helped us fix some minor problems.”
Why these companies made our list
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