Porsche Ontario
Buyer's Guide grade A · 1,023 public reviews · September 2026
Porsche Ontario earns an A. 1,023 public reviews average 4.8 stars and 4.7 percent are one or two stars. That ranks it above 90 percent of graded dealers around Pomona.
At a glance
- Past buyers are close to unanimous. Few complaints across a long record.
- Complaint share 4.7 percent, lower than the 12.2 percent typical near Pomona
- Reviewers mention car buying experience most, in 140 reviews
- Open Sundays · Porsche dealer
Why It Got an A
The star average is 4.8 from 1,023 public reviews. After the grade pulls it toward the national average, it counts as 4.78. 4.7 percent of reviews are one or two stars. That clears every bar for an A. The adjusted rating is 4.6 or better, complaints are 8 percent or less, and the record has at least 50 reviews. 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 Porsche Ontario
Porsche Ontario sells new Porsche 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.
Luxury cars cost the most to get wrong. One deferred service item can cost more than an inspection many times over.
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 | 2262 Inland Empire Blvd, Ontario, CA 91764 |
|---|---|
| Phone | 909-292-1939 |
| Website | porscheontario.com |
| Listed features | Oil changes, Service department, Sells used vehicles, Checks, Credit cards, Debit cards, Phone pay, Delivery |
| Type | Porsche dealer |
Hours
| Monday | 9 AM to 8 PM |
|---|---|
| Tuesday | 9 AM to 8 PM |
| Wednesday | 9 AM to 8 PM |
| Thursday | 9 AM to 8 PM |
| Friday | 9 AM to 8 PM |
| Saturday | 9 AM to 8 PM |
| Sunday | 10 AM to 7 PM |
Common Questions
Is Porsche Ontario a good dealer?
Can I get a car at Porsche Ontario inspected before I buy?
How is the grade worked out?
Is Porsche Ontario open on Sunday?
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 Is this your dealership and something here is out of date?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 Pomona, CA. Found a car here? Book a pre purchase inspection in Pomona, CA before you sign.
Inspect it on the lot
We check the car at Porsche Ontario before you sign.
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The grade covers the dealer. We check the car.
122 points, a full scan and a road test, on the lot, same day report.