A1 Smog Check STAR Station & Clean Truck Check

Smog inspection station

4.9 4.9 from 217 reviews

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A1 Smog Check *STAR* Station & Clean Truck Check is a smog and emissions station in Livermore, CA. It holds a 4.9 star rating from 217 customer reviews. Read the reviews and hours below, or call (925) 449-2164.

Photo from a1smog.us, this business's own website.

Services Offered

Change of ownershipDieselsEmissions testingHybrid vehicles serviceInitial registrationOut-of-stateSmog certificationBiennial Smog CertificationSmog CheckSmog Inspection RV/MotorhomeSmog TestsTrucks SmogVEHICLE VIN VERIFICATIONVehicle Inspection

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Address3573 First St Unit E, Livermore, CA 94551

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Phone(925) 449-2164

Websitehttp://a1smog.us/

Also onGoogle

Good to knowComes to youWheelchair accessible entranceWheelchair accessible parkingOil changes

PaymentsCredit cards, Debit cards, Tap to pay

Hours

See the full week

Monday	8 AM to 6 PM
Tuesday	8 AM to 6 PM
Wednesday	8 AM to 6 PM
Thursday	8 AM to 6 PM
Friday	8 AM to 6 PM
Saturday	8 AM to 4 PM
Sunday	8 AM to 4 PM

A1 Smog Check STAR Station & Clean Truck Check Reviews & Ratings

Customer reviews 4.9 4.9 · 217 reviewschecked 2026-09-12

5 star206

4 star6

3 star1

2 star0

1 star4

What Customers Mention

The topics that come up most in its Google reviews, and how many reviews raise each one.

Friendly staff 64Discount 13Courteous staff 7Wait time 4Friendly owner 3No appointment needed 3Fast smog 2No hassle 2

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What Car Repairs Cost in Livermore, CA

Typical independent shop prices at California labor rates, parts and labor, for a midsize car. Each guide shows the price for your vehicle and what to ask before you pay. See all 91 repair cost guides.

Catalytic converter replacement cost $420 to $1,750 Oxygen sensor replacement cost $120 to $510 EVAP leak repair cost $140 to $740 EGR valve replacement cost $210 to $840 Purge valve replacement cost $110 to $460 Exhaust leak repair cost $150 to $690