Price
Call for price
Hours
Open Mon–Sat
Station type
Test & Repair
Appointments
Walk-ins welcome
Hours
- Monday
- 9 AM – 5 PM
- Tuesday
- 9 AM – 5 PM
- Wednesday
- 9 AM – 5 PM
- Thursday
- 9 AM – 5 PM
- Friday
- 9 AM – 5 PM
- Saturday
- 9 AM – 1 PM
- Sunday
- Closed
Good to know
Languages
English
Payment
Credit Card, Debit Card
What to expect at Smog 300
Smog 300 is licensed by the Bureau of Automotive Repair as a Test & Repair smog station in El Cajon, so it 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.
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?
- Smog 300 can diagnose and repair the problem in the same shop, then retest the car.
- 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.
595 El Cajon Boulevard, El Cajon, CA 92020
Get directions →Hours
- Monday
- 9 AM – 5 PM
- Tuesday
- 9 AM – 5 PM
- Wednesday
- 9 AM – 5 PM
- Thursday
- 9 AM – 5 PM
- Friday
- 9 AM – 5 PM
- Saturday
- 9 AM – 1 PM
- Sunday
- Closed
Also listed on
Other stations near Smog 300
Legacy Import Auto Care
661 El Cajon Blvd
Trust Auto Repair
537 West Main Street
El Cajon City Smog Center
243 N Marshall Ave
Aamco Transmissions Of El Cajon
355 North Johnson Ave
Team Mazda Of El Cajon
572 North Johnson Avenue
Nearby cities in San Diego County
Questions about Smog 300
Smog 300 is open Monday 9 AM to 5 PM; Tuesday 9 AM to 5 PM; Wednesday 9 AM to 5 PM; Thursday 9 AM to 5 PM; Friday 9 AM to 5 PM; Saturday 9 AM to 1 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.
Smog 300 accepts Credit Card, Debit Card.
Google lists the following accessibility features at Smog 300: wheelchair accessible entrance, wheelchair accessible parking.
Smog 300 has held a BAR smog license since 2024. You can verify the license status at bar.ca.gov.
Smog 300 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 (619) 631-7999 for a quote.
Smog 300 does not take online bookings here, but walk-ins are welcome. Call (619) 631-7999 to check the wait.
Staff at Smog 300 speak English.
The closest alternatives in El Cajon are Legacy Import Auto Care (0.1 mi) and Trust Auto Repair (0.4 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: San Diego • Licensed since 2024