✓ RepairPal Certified
780 N Diamond Bar Blvd #B2
Diamond Bar, CA 91765
View map and get directions
8:00am to 6:00pm
8:00am to 6:00pm
8:00am to 6:00pm
7:00am to 4:00pm
8:00am to 6:00pm
8:00am to 6:00pm
8:00am to 6:00pm
Call now:
(909) 347-6369

Auto Repair Experience

  • Harry Downs Sr., Owner
  • Harry Downs Jr, Service Manager
  • Established 2012
  • 2 Auto Repair Mechanics on Staff
  • 24 Years of Car Repair Experience


Honest-1 Auto Care has been serving the community of Diamond Bar since 2012. This location of this popular chain excelled in our survey of their most recent customers where they scored well above the average in terms of the customer service they deliver. This RepairPal Certified team was described as honest, friendly, efficient, helpful, and knowledgeable. Harry Downs and his son Harry Jr are at the helm of this shop. Harry Jr. has a strong dealership background and works hard to keep his team up to date by requiring his staff to attend the ongoing training that is needed to make professional repairs to your modern vehicle. These repairs can range from check engine light diagnosis and repair, to minor and major mechanical repairs, to your scheduled maintenance needs. This work is backed by a 24-month / 24,000-mile warranty for your peace of mind. Rental cars, local shuttle service, early bird drop off, Saturday hours, and a clean comfortable waiting area with wireless Internet are available for your convenience.


Auto Repair Experience

  • Harry Downs Sr., Owner
  • Harry Downs Jr, Service Manager
  • Established 2012
  • 2 Auto Repair Mechanics on Staff
  • 24 Years of Car Repair Experience


  • AC/Heating
  • Alignment
  • Check Engine Light
  • Diagnosis
  • Hybrid/Electric
  • Muffler & Exhaust
  • Oil Change & Lube
  • Roadside Assistance
  • Scheduled Maintenance
  • Service & Repair
  • Timing Belts
  • Tire Sales/Repair
  • Transmission Repair


  • Car Pickup/Dropoff
  • Child Friendly
  • Coffee
  • Early Bird Dropoff
  • Financing
  • Open Saturday
  • Open Weekends
  • Parts/Accessories
  • Rental Car
  • Se Habla Espanol
  • Service Guarantee
  • Shopping Nearby
  • Shuttle
  • Wireless Internet


Makes We Serve

  • Acura
  • Audi
  • BMW
  • Buick
  • Cadillac
  • Chevrolet
  • Chrysler
  • Dodge
  • FIAT
  • Ford
  • GMC
  • Geo
  • Honda
  • Hummer
  • Hyundai
  • Infiniti
  • Isuzu
  • Jaguar
  • Jeep
  • Kia
  • Land Rover
  • Lexus
  • Lincoln
  • Mazda
  • Mercedes-Benz
  • Mercury
  • Mini
  • Mitsubishi
  • Nissan
  • Oldsmobile
  • Plymouth
  • Pontiac
  • Porsche
  • Ram
  • Saab
  • Saturn
  • Scion
  • Smart
  • Subaru
  • Suzuki
  • Toyota
  • Volkswagen
  • Volvo

Message from the Shop

Industry statistics show that 66% of customers bringing in vehicles for service are female. Honest-1 centers are designed to be family friendly with upscale features like tiled lobbies with leather easy chairs and couches, Internet cafe, complimentary beverages, large screen TVs, children's play areas secured by a low wall, tiled and upscale restrooms, and exceptionally clean work areas.

Why Choose Us?

Free Estimates!
ASE Certified Technicians
Free Customer Shuttle
Same Day Service on Most Repairs
Nationwide 36 months/36,000 miles warranty


Overall Rating

47 Verified Reviews

Customer Reviews

Verified CustomerJune 01, 2014

Honest and flexible.

Verified CustomerMay 28, 2014

Good customer relations.

May 27, 2014

Customer service is great. They do a great job.

Verified CustomerMay 25, 2014

Great service, associates didn't try to up-sell me.

Verified CustomerMay 20, 2014

Friendly and honest staff.

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Verified CustomerMay 20, 2014

Good service.

May 16, 2014

Great Experience!!

Verified CustomerMay 13, 2014

Great staff. Courteous and professional. Great environment while you wait.

Verified CustomerMay 11, 2014

The customer service is superior, they are very professional in regards to your vehicle. I have and would recommend future customers to honest 1 auto care.

Verified CustomerMay 04, 2014

They were extremely helpful with every need I had, and they fixed my car at a reasonable price.

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Verified CustomerApril 29, 2014

Everything was perfect.

Verified CustomerApril 27, 2014

They were friendly and accommodating.

April 26, 2014

It's a good shop, they seem to be honest.

Verified CustomerApril 24, 2014

Friendly honest service.

Verified CustomerApril 23, 2014

Service was great. Also fast.

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Verified CustomerApril 19, 2014

Good Service.

Verified CustomerApril 13, 2014

They're a well run, well managed team of professionals. The prices seem right and they don't try to sell you things you don't need. They're HONEST!

Verified CustomerApril 09, 2014

Honest repair assessment...

April 04, 2014

Got me right in and got my car back in no time.

Verified CustomerApril 04, 2014

Very friendly staff and quick service.

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Verified CustomerApril 03, 2014

I like the service here and I feel its good service.

April 02, 2014

Great service.

Verified CustomerMarch 31, 2014

They seem honest.

Verified CustomerMarch 31, 2014

Honest, knowledgeable, extremely polite, fair pricing.

Verified CustomerMarch 30, 2014

Good customer service that was timely and affordable.

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Verified CustomerMarch 29, 2014

Excellent service.

Verified CustomerMarch 28, 2014

I am well pleased with my service and the professionalism the employees render.

Verified CustomerMarch 26, 2014

The staff is very friendly and helpful. They really go out of their way to help you, especially Candy. She offered a ride to my work which was in Upland. She went out of her way to get me a good price. The facility is clean and offers refreshments.

Verified CustomerMarch 25, 2014

I have had excellent service & everyone at Honest 1 are very nice people.

Verified CustomerMarch 24, 2014

I trust them to live up to their name - honest!

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Verified CustomerMarch 16, 2014

Friendly and excellent service. They treat you like a friend and go out of the way to check your car out.

Verified CustomerMarch 16, 2014

Nice job.

Verified CustomerMarch 15, 2014

Great service!

Verified CustomerMarch 13, 2014

Customer Service - Excellent. Workmanship - Very Satisfied.

Verified CustomerMarch 13, 2014

They are simply great, responsive, good quality customer service, etc.

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Verified CustomerMarch 10, 2014

I was pleased with the service that I received. The employees had good customer skills.

March 09, 2014

Very good.

Verified CustomerMarch 09, 2014

They cared.

Verified CustomerMarch 08, 2014


Verified CustomerMarch 08, 2014

They work hard at coming up with the solutions, they will make recommendations but don't harass you about getting the work done. They also make you feel welcome.

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Verified CustomerFebruary 27, 2014

They are fast, honest as the name suggests, and incredibly helpful. Probably one of the best mechanics I've been to.

Verified CustomerFebruary 26, 2014

I have developed a relationship with the company and its employees. I feel they truly have been "honest" in how they approach their customers. They explain the issue with your car, show you the problem, give you a quote on repairs, tell you how you can approach the timing of the repair (urgent, asap, when you come in for oil change, etc), and work to resolve an issue should that arise.

Verified CustomerFebruary 19, 2014

The service was excellent, the pricing was very upfront, there were no hidden costs or fees and they showed me the problems on my vehicle so i could see things for myself. Very hassle free repair shop.

Verified CustomerFebruary 17, 2014

Love the service.

Verified CustomerFebruary 10, 2014

They seem to be pushing me to change other parts of the car. Besides, they didn't close my drawer in the front correctly and I have to go another repair store to fix it for me.

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February 07, 2014

Superior customer service. Shuttle service if needed. I trust them.

Verified CustomerFebruary 02, 2014

Honest-1 is friendly, efficient, and fast!

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RepairPal Certified

RepairPal Certified shops pass a rigorous 42-point annual inspection by our master mechanics for quality work and fair prices.

  • High quality repair
  • Guaranteed fair prices
  • Real, verified reviews
  • Current expert training
  • Warranty on repairs
  • Great customer service