Your Fuel, Snack and Auto Mechanic Shop

There are several different types of auto service centers in the world, but only one that can bring you the kind of service and convenience that you deserve. Are you looking for quality smog check service? You've come to the right place. We're Four Corners Union 76, located at 2025 Monument Boulevard Concord, CA 94520, and we've been serving our customers since 1953.

We are Just a Call Away!

We make it easy for you to get the help that you need. Just call us at (925) 682-3142. We're a full-service Center, which means that we'll take care of all your car's needs—not just the smog check. If you need it, we'll do it! We participate in Consumer Programs and have an ASE Certification for Brake and Lamp Service.

We serve all of Concord, Walnut Creek, Pleasant Hill, and the surrounding areas—including Lamorinda, Bay Point, Martinez, Danville, Alamo, Diablo Valley, Pittsburg and Antioch. We hope to see you soon!

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I use four corners Union 76 for all my van mechanical needs .From smogging, Air Conditioning ,Brakes you name it they're the best master mechanics in town hands down
- Jmashall S.

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This place is awesome. They have a full service pump and are extremely friendly and helpful.
- Leonard T.

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I always get my cars smogged here. It's first come first served, but they are fast and efficient and low cost.
- Jim H.

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Outstanding service!
- Ronald L.

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Amazing place!
- Jessica A.

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