Price
Call for price
Hours
Open Mon–Fri
Station type
Test & Repair
Appointments
Walk-ins welcome
Hours
- Monday
- 8 AM – 5 PM
- Tuesday
- 8 AM – 5 PM
- Wednesday
- 8 AM – 5 PM
- Thursday
- 8 AM – 5 PM
- Friday
- 8 AM – 5 PM
- Saturday
- Closed
- Sunday
- Closed
Good to know
Languages
English
Payment
Cash, Credit Card
What to expect at R And D Automotive Repair
R And D Automotive Repair is licensed by the Bureau of Automotive Repair as a Test & Repair smog station in San Marcos, so it can run the inspection and, if your car fails, diagnose and fix it in the same shop. It is not STAR certified, so if your DMV renewal notice says "STAR Station Required" you will need a different station.
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?
- R And D Automotive Repair 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.
175 Navajo St, San Marcos, CA 92078
Get directions →Hours
- Monday
- 8 AM – 5 PM
- Tuesday
- 8 AM – 5 PM
- Wednesday
- 8 AM – 5 PM
- Thursday
- 8 AM – 5 PM
- Friday
- 8 AM – 5 PM
- Saturday
- Closed
- Sunday
- Closed
Also listed on
Other stations near R And D Automotive Repair
High Tech Auto
1620 Grand Avenue 5
Smog First
1321 Descanso Ave, Suite A
Smog Central Station
375 S Rancho Santa Fe Rd Ste 109
North County Smog & Repair
1288 W San Marcos Blvd Ste 100
All Autos Smog
738 W San Marcos Blvd
Nearby cities in San Diego County
Questions about R And D Automotive Repair
R And D Automotive Repair is open Monday 8 AM to 5 PM; Tuesday 8 AM to 5 PM; Wednesday 8 AM to 5 PM; Thursday 8 AM to 5 PM; Friday 8 AM to 5 PM. Closed Saturday and Sunday. Hours can change on holidays, so call ahead if you are cutting it close.
R And D Automotive Repair accepts Cash, Credit Card.
R And D Automotive Repair has held a BAR smog license since 2015. You can verify the license status at bar.ca.gov.
R And D Automotive Repair 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 (760) 744-3300 for a quote.
R And D Automotive Repair does not take online bookings here, but walk-ins are welcome. Call (760) 744-3300 to check the wait.
Staff at R And D Automotive Repair speak English.
The closest alternatives in San Marcos are High Tech Auto (0.1 mi) and Smog First (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 2015