Price
Call for price
Hours
Hours not available
Station type
Test Only
Appointments
Walk-ins welcome
Good to know
Languages
English
Payment
Cash, Credit Card
What to expect at GP Test Only Center
GP Test Only Center is licensed by the Bureau of Automotive Repair as a Test Only smog station in Glendora. It runs the inspection and issues the certificate but does no repairs. Its STAR certification is currently suspended in the BAR registry, so it cannot test DMV-directed vehicles until that is restored.
Walk-ins are welcome. Most smog checks take 15 to 30 minutes, and most visits are closer to 20.
What to bring
Your registration or DMV renewal notice
It says whether the car needs a STAR station.
The car, with the check engine light off
On a 2000-or-newer car, a lit check engine light fails the test on its own.
A way to pay
The $8.25 state certificate is paid on top of the test when the car passes, unless the station's price or coupon includes it.
What if I fail?
- GP Test Only Center doesn't do repairs, so the car goes to a repair shop and comes back for the retest.
- Each station sets its own retest price, so ask before the first test.
- BAR's Consumer Assistance Program pays up to $1,450 toward emissions repairs for income-eligible owners.
407 West Arrow Highway # D, Glendora, CA 91740
Get directions →Other stations near GP Test Only Center
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407 W Arrow Hwy Unit D
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Samos Smog Check Test Only Center
103 East Arrow Highway Unit A
Glendora Mobile Service Center
540 W Rte 66
Darling Smog
743 W Rte 66 #4
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Questions about GP Test Only Center
GP Test Only Center accepts Cash, Credit Card.
GP Test Only Center has held a BAR smog license since 2026. You can verify the license status at bar.ca.gov.
GP Test Only Center has not published a price on SmogCheckDeals. The Bureau of Automotive Repair puts the statewide average at $69.16 as of August 2026, about $65 for a 2000-or-newer vehicle and $73 for 1999-or-older, plus the $8.25 certificate fee. Call (626) 510-3565 for a quote.
GP Test Only Center does not take online bookings here, but walk-ins are welcome. Call (626) 510-3565 to check the wait.
We don't have hours on file for GP Test Only Center, so call (626) 510-3565 before you drive over.
Staff at GP Test Only Center speak English.
The closest alternatives in Glendora are Test Only Center and Advanced Auto Smog Star (0.1 mi). Both are listed further up this page with their ratings and hours.
How we get this data: BAR licenses and STAR status, Google hours and ratings, coupons published by the station.
Verify this station’s license and STAR standing at bar.ca.gov.
Own this shop? Add photos
BAR field office: South El Monte • Licensed since 2026