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Piedra's Smog Test Only

4.7 (288 reviews)
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Services - Piedra's Smog Test Only

Registration services

Smog check

Piedra's Smog Test Only Smog Check Stations Photos

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Reviews With Photos

Waiting room
Vince A.

Been coming here for years. How long? Let's just say I probably pulled a coupon from the Pennysaver my first time here. Anyway, this place is the most convenient location to get a quick smog certificate. I've been here when it's crowded, and they are still fairly quick getting you serviced. But I still totally recommend coming in early. There are usually 1, maybe 2 people working but again, fast service. I got in today at 0804 and was driving home by 0824. Also the pricing is good. There is a coupon online that makes it only $55. Definitely, a convenient option.

Yan W.

I took my Nissan car for a Smog Test and this time I had to do it at a STAR Station. I forgot that I had been to Piedra's Smog Test Only a few years ago. They have the Smog check deal for $46.75 +$8.25 State Certification (Total $55) by checking in on Yelp. The price was very reasonable. You can pay by Cash or Credit card (I used Apple Pay). My car was done in about 15 minutes and he gave me a copy of the Smog Check Inspection Report and the certificate has been electronically transmitted to DMV. It was fast and service was friendly. Easy Peasy!

Example of coupon.

They offer a coupon on the website for 47.00 for smog test. However , will not inform the customer and allow you to pay $76. Didn't even mention it .. most business will offer their customers any discounts that are advertised. I found this to be very off putting. ... Update: It is clear by the argumentative and nasty response from the owner that my 1 star stands . If the owner sees my review as misleading, instead of using professionalism and decorum to respond ... see below, his poor attitude speaks for itself. I will have a great day elsewhere.

Car that I smogged

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2 years ago

Business owner information

Photo of Silvino P.

Silvino P.

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11 months ago

Professional and fast service with great support before coming in- definitely will recommend and return. Great value with their coupon too.

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Photo of Shawn D.
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2 years ago

Quick service at an affordable price. My new go to spot for all my cars! The worker was kind and professional, what more can you ask for?

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2 years ago

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1 year ago

Easy, fast service. Super simple process. Drove up with no appointment and was out in 15 minutes.

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3 years ago

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2 years ago

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2 years ago

Go to place for smog. Local and reliable. Very helpful. Waiting room is air conditioned and clean

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2 years ago

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2 years ago

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1 year ago

Our go-to smog only test place - family owned and honestly the best prices in our area!

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4 years ago

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2 years ago

Helpful 3
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1 year ago

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1 year ago

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1 year ago

Fast, friendly and honest! Family owned and they offer auto insurance as well. Support local businesses!

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2 years ago

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2 years ago

Great service, friendly staff, fair price. I was in and out in 15 mins. Highly recommend this shop.

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1 year ago

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3 years ago

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3 years ago

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1 year ago

Very quick and easy process! And front desk worker was welcoming! :) also had a coupon!!

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2 years ago

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Photo of Dave L.
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3 years ago

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2 years ago

This is the first time I been to this place for the smog check, I definitely will come next time and I strongly recommend this place!

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3 years ago

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3 years ago

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4 years ago

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4 years ago

Helpful 1
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1 year ago

Highly recommended. Very professional. Very fast service and friendly staff. Great value with you buck

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Photo of L M.
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2 years ago

Friendly, fast, and professional. Don't know about you but I'm going to continue taking my car here to smog. Easy decision.

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3 years ago

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2 years ago

The best and fastest smog around here. Everytime I come I am literally in and out within 20 minutes. Prices are very cheap too.

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2 years ago

Fast and excellent service. Highly recommend if you need a smog test! I will be coming back the next time I need one.

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3 years ago

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3 years ago

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Photo of H L.
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1 year ago

I've been here twice now for smog test only. Great service and fast turnaround around.

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3 years ago

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Photo of David G.
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2 years ago

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4 years ago

Helpful 1
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Page 2 of 8

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Review Highlights - Piedra's Smog Test Only

Fast and reliable tests, they also where able to handle my DMV registration and hand out the tags right there!

Mentioned in 32 reviews

Read more highlights

Patrick's Auto Center - Stop By For Our New Express Service!

Patrick's Auto Center

(381 reviews)

My car needed both low beams replaced, an oil change and a tune up. Matt was quick to provide me…read morewith a quote that was reasonable. Scheduling the appointment was easy. Brought my car in, went over some paperwork and was told I'd be contacted once the inspection was complete. Sure enough Matt called me to let me know there were some items found during inspection and which ones needed to be addressed right away. After agreeing to the updated quote they got to work. I came back to the shop prior to being told my car was ready, and I think there may have been a delay in getting parts needed (dropped the car off at 9am, wasn't done until 4pm). Other than that, the quoted price is what I paid, there wasn't any pushing to buy a service that wasn't needed. I will definitely be bringing my car back for the additional work needed.

I requested a quote through Yelp and my request was sent to multiple auto shops. I chose this…read morecompany based on location and called ahead to confirm they could do more than just read basic codes. I had already done my own diagnostics and knew the car was running rich. I had ruled out the upstream O2 sensor, catalytic converter (both new), MAP sensor, and fuel injectors. I explained all of this to Matt before bringing the car in. He assured me they could perform deeper diagnostics with their equipment. After dropping off the car, Matt called and told me they had "confirmed" exactly what I had already told them, and that the next step would be pulling spark plugs--for an additional fee. At that point, I decided to go elsewhere. What I don't understand is why I was still charged the full $85 diagnostic fee, plus a $4 hazardous materials fee and $3 shop supply fee. Plugging a car into a diagnostic scanner does not generate any hazardous waste--no fluids are drained, no chemicals are used, and no parts are replaced. There's nothing about a basic scan that would justify a hazardous materials charge. That kind of fee typically applies when disposing of things like oil, coolant, or other regulated waste, none of which occurred here. In the end, I paid $92, wasted time and gas, and learned nothing new. The most concerning part was Matt admitting he didn't even know spark plugs would need to be checked as part of further diagnosis.

Piedra's Smog Test Only - smog_check_stations - Updated May 2026

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