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Dealers / Diamond Bar, CA / Alltech Auto
Used car dealerCovina, CA
F

Alltech Auto

Buyer's Guide grade F · 30 public reviews · September 2026

Alltech Auto earns an F. 30 public reviews average 3.1 stars and 46.7 percent are one or two stars. That ranks it above 2 percent of graded dealers around Diamond Bar.

At a glance

  • A heavy share of past buyers left one or two stars.
  • Complaint share 46.7 percent, higher than the 15.5 percent typical near Diamond Bar
  • Reviewers mention truck most, in 9 reviews
  • Used car dealer

Why It Got an F

The star average is 3.1 from 30 public reviews. After the grade pulls it toward the national average, it counts as 3.64. 46.7 percent of reviews are one or two stars. To reach a C it would need a complaint share of 25 percent or less. How the grade works.

How the Stars Break Down

5 star14 47%
4 star1 3%
3 star1 3%
2 star2 7%
1 star12 40%

What Reviewers Talk About

The subjects that come up most in public reviews of this dealer, with how many reviews mention each one.

truck 9price 5website 2call 2

Buying From Alltech Auto

Alltech Auto is an independent used car lot. Independent lots range from excellent to poor, and the car in front of you matters more than the sign out front. Ask whether the car is sold as is and read the Buyers Guide sticker in the window. What as is means.

This business has not claimed its public listing. Nationally, graded dealers with an unclaimed listing earn an F 42 percent of the time, against 13 percent for claimed ones. Confirm the address and phone before you go.

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

Address865 Glentana St, Covina, CA 91722
Phone626-332-4331
Websitealltechautos.net
Listed featuresDebit cards
TypeUsed car dealer

Common Questions

Is Alltech Auto a good dealer?
Alltech Auto earns an F in the PPI Auto Buyer's Guide. A heavy share of past buyers left one or two stars. The grade reads 30 public reviews averaging 3.1 stars, with 46.7 percent at one or two stars. It rates past buyers' experience with the dealer, not any single car.
Can I get a car at Alltech Auto inspected before I buy?
Yes. PPI Auto sends an inspector to the car on the lot in Covina. You do not have to be there. The inspection covers 122 points, a full OBD-II scan with readiness monitors, a road test and photos of anything found, and the report comes the same day. Ask the dealer to hold the car while it is checked.
How is the grade worked out?
It needs 20 or more public reviews. The star average is pulled toward the national average by 25 average reviews so a short record cannot jump the line, and the share of one and two star reviews sets a ceiling. The full method is on our grading page.

Other Graded Dealers Nearby

Grades update when public reviews do. Is this your dealership and something here is out of date? Tell us. See every graded dealer in Diamond Bar, CA. Found a car here? Book a pre purchase inspection in Diamond Bar, CA before you sign.

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Details

No payment now · We confirm scheduling before any work

The grade covers the dealer. We check the car.

122 points, a full scan and a road test, on the lot, same day report.

Call 951-267-8500