K1 Smog & Clean Truck Check

Smog inspection station

4.8 4.8 from 126 reviews

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K1 Smog & Clean Truck Check is a smog and emissions station in Hayward, CA. It holds a 4.8 star rating from 126 customer reviews. Read the reviews and hours below, or call (510) 582-2500.

Photo from k1smog.com, this business's own website.

Services Offered

Emissions testingSmog certificationAll Dmv Smog ChecksAny Auto RepairsAutomotive RepairsDiesel InspectionsDiesel Smog CheckGross Polluter CertificationOut Of State Smog TestRegular MaintenanceRegular Smog StationSmog Check CostSmog Check InspectionSmog Check StationSmog Test DieselSmog Test Only Centers

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Address24087 Mission Blvd B, Hayward, CA 94544

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Phone(510) 582-2500

Websitehttps://www.k1smog.com/

Also onGoogle

Good to knowWheelchair accessible entranceWheelchair accessible parking

PaymentsCredit cards, Debit cards, Tap to pay

Hours

See the full week

Monday	10 AM to 5:30 PM
Tuesday	8 AM to 5:30 PM
Wednesday	8 AM to 5:30 PM
Thursday	8 AM to 5:30 PM
Friday	8 AM to 5:30 PM
Saturday	9 AM to 3 PM
Sunday	Closed

K1 Smog & Clean Truck Check Reviews & Ratings

Customer reviews 4.8 4.8 · 126 reviewschecked 2026-09-25

5 star115

4 star5

3 star3

2 star0

1 star3

What Customers Mention

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

Owner 6Speed 5Pricing 3Honest staff 2Informative staff 2No hassle 2Sensors 2Spanish-speaking staff 2

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What Car Repairs Cost in Hayward, 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