Price
Call for price
Hours
Open Mon–Sat
Station type
Test & Repair
Discount Smog is a STAR certified test-and-repair smog check station at 4948 Firestone Blvd, South Gate, CA 90280. Open Mon–Sat.
Hours
- Monday
- 9 AM – 6 PM
- Tuesday
- 9 AM – 6 PM
- Wednesday
- 9 AM – 6 PM
- Thursday
- 9 AM – 6 PM
- Friday
- 9 AM – 6 PM
- Saturday
- 9 AM – 3 PM
- Sunday
- Closed
Hours from public business listings. Call to confirm before you go.
What to expect at Discount Smog
Discount Smog can run the inspection and, if your car fails, diagnose and fix it in the same shop. It is STAR certified, so it can test vehicles the DMV directs to a STAR station, including gross polluters.
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?
- Discount Smog can diagnose and repair the problem in the same shop, then retest the car.
- BAR's Consumer Assistance Program pays up to $1,450 toward emissions repairs for income-eligible owners.
Been to Discount Smog?
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4948 Firestone Blvd, South Gate, CA 90280
Get directions →Hours
- Monday
- 9 AM – 6 PM
- Tuesday
- 9 AM – 6 PM
- Wednesday
- 9 AM – 6 PM
- Thursday
- 9 AM – 6 PM
- Friday
- 9 AM – 6 PM
- Saturday
- 9 AM – 3 PM
- Sunday
- Closed
Hours from public business listings. Call to confirm before you go.
Also listed on
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G J Smog Check
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A B Test Only Center
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MZ Test Only
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R & R Smog & Auto Repair
10132 Atlantic Ave, South Gate
Eds Garage
4230 Firestone Blvd, South Gate
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Questions about Discount Smog
Discount Smog is open Monday 9 AM to 6 PM; Tuesday 9 AM to 6 PM; Wednesday 9 AM to 6 PM; Thursday 9 AM to 6 PM; Friday 9 AM to 6 PM; Saturday 9 AM to 3 PM. Closed Sunday.
Verify this station’s license and STAR standing at bar.ca.gov.
Listing updated October 7, 2026.
Own this shop? Add photos
BAR field office: South El Monte • Licensed since 2014