Diamond Auto Group
Buyer's Guide grade C · 2,137 public reviews · September 2026
Diamond Auto Group earns a C. 2,137 public reviews average 4.2 stars and 17.6 percent are one or two stars. That ranks it above 14 percent of graded dealers around Worcester.
At a glance
- Mixed. Many buyers were happy, but a real share were not.
- Complaint share 17.6 percent, higher than the 8.8 percent typical near Worcester
- Reviewers mention appointment scheduling most, in 22 reviews
- Closed Sundays · Chevrolet dealer
Why It Got a C
The star average is 4.2 from 2,137 public reviews. After the grade pulls it toward the national average, it counts as 4.20. 17.6 percent of reviews are one or two stars. To reach a B it would need a complaint share of 15 percent or less. How the grade works.
How the Stars Break Down
What Reviewers Talk About
The subjects that come up most in public reviews of this dealer, with how many reviews mention each one.
Buying From Diamond Auto Group
Diamond Auto Group sells new Chevrolet vehicles and usually takes trade ins, so its used lot is a mix of brands. A certified car from the brand program comes with a factory backed warranty. A used car that is not certified is sold on the same terms as any other used car, so read the window sticker. How certified cars work.
Whatever the grade, the grade is about the dealer. The car is its own question. Ask the dealer if an independent inspection is allowed before you sign. A good lot says yes.
Dealer Details
| Address | 768 Washington St RT. 20, 54 Faith Ave, Auburn, MA 01501 |
|---|---|
| Phone | 508-974-8406 |
| Website | choosediamond.com |
| Listed features | Oil changes, Service department, Sells used vehicles, Checks, Credit cards, Debit cards, Phone pay, Delivery |
| Type | Chevrolet dealer |
Hours
| Monday | 9 AM to 7 PM |
|---|---|
| Tuesday | 9 AM to 7 PM |
| Wednesday | 9 AM to 7 PM |
| Thursday | 9 AM to 7 PM |
| Friday | 9 AM to 6 PM |
| Saturday | 9 AM to 6 PM |
| Sunday | Closed |
Common Questions
Is Diamond Auto Group a good dealer?
Can I get a car at Diamond Auto Group inspected before I buy?
How is the grade worked out?
Is Diamond Auto Group open on Sunday?
Other Graded Dealers Nearby
Buyers Also Look At
Grades update when public reviews do. Is this your dealership and something here is out of date? Tell us. See every graded dealer in Worcester, MA. Found a car here? Book a pre purchase inspection in Worcester, MA before you sign.
Inspect it on the lot
We check the car at Diamond Auto Group before you sign.
951-267-8500Call nowInspect a car at Diamond Auto Group
Send the car details and we will call you back.
The grade covers the dealer. We check the car.
122 points, a full scan and a road test, on the lot, same day report.