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  1. Free Drop Off (5 Mile Radius)
  2. Fast & Easy Turnaround
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Glendora, CA
735 W Route 66

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Why us?

Trusted Mechanics!

When we first opened we made it our mission to help families get their cars back on the road. By achieving the highest quality automotive mechanical work at an affordable price. That is why we say “At Our Shop You Wear The Crown!”

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  • Five Star Reviews
  • Appointment Recommended
  • Spot-On Reward Program
  • Warranties on Service
  • Free Wifi Available
  • Above-and-Beyond Vehicle Service

They listened to what I wanted

Adriana V
I absolutely hate going to change my oil on my cars because I feel like other places love trying to take advantage of me because I'm a girl, so when I came into here I was already ready for all bs they were going to tell me, but I was so surprised on how professional, helpful, and nice these guys were! They listened to what I wanted and (OFFERED alternatives) they didn't hassle me at all and made the experience better than any other place I have gone to! Will definitely be coming back!

I highly recommend these guys

Mayra M
By far, the most helpful, honest, and professional car shop I've ever been to! I stopped by yesterday (before their grand opening) and they were so happy to help. For once, someone completed my car's oil change without hassling me and pushing other services on me! I highly recommend these guys, their service was phenomenal!

the mechanic knows exactly what he's doing

George L
Ernie and Jeff are absolutely wonderful. I needed to have a pair of Flowmaster Outlaw axle backs installed on my Mustang. From the moment I arrived, to the moment the job was finished, these guys were very courteous and knowledgeable. Their prices are incredible. I had called around to other muffler shops to get a quote. Crownd Auto has the best prices around. Scheduling an appointment is very easy and they will get back to you if you have any questions.

"Very professional and honest"

Kathy F
Very professional and honest. The CROWND AUTOMOTIVE team took their time to explain exactly what repairs my car needed. My parents' recommended them to me. I highly recommend CROWND AUTOMOTIVE and would give them 10 stars if I could. Thank you!

"friendly and knowledgeable"

Carol M
Ernie and Jeff where very helpful and cool very friendly and knowledgeable about their stuff and they worked on our 96 corvette and looks awesome and did great job.. I will recommend them and will come back for any other stuff we need... Thanks again

"price is very reasonable"

Ralph S
The Guys were great and Very helpful. Explain everything that was needed to change my Catalytic converter . The job was done very nice and quick and the price is very reasonable. 2nd time taking my Car in for exhaust work area definitely recommend


Performance Exhaust

Our Experts will let you you choose and sound test our different exhaust systems and brands.

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Check out our full list of muffler/exhaust services.

Catalytic Converters

California state approved catalytic converters available for sale with installation

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Check out our full list of inspection services.

Brake Change & Repair

We fix and change brakes, brake pads, calipers, that includes anything else brake related.

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Check out our full list of mechanic services.

Tune-Up & Oil Changes

Any mile tune-ups full inspection and diagnosis. Or get a premium quality oil change.

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Check out our full list of mileage tune-up packages.

Meet our Specialists


FAQ’S & News

  • Do I have to make an appointment?

    No appointment necessary but for the fastest turnaround an appointment is recommended.

  • Can I leave my car there?

    Yes you can leave it overnight, for up to 48 hours without storage fees.

  • Can you quote me over the phone?

    Yes but to get the most accurate estimate we recommend you bring your car in.

  • Do you offer discounts?

    Yes we do offer a reward program for our spot-on members (free to sign up).

So what are the most common symptoms of a bad or clogged catalytic converter? The most…