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Dealers / Sioux Falls, SD / Billion Auto - Mazda in Sioux Falls
Mazda dealerSioux Falls
A

Billion Auto - Mazda in Sioux Falls

Buyer's Guide grade A · 2,019 public reviews · September 2026

Billion Auto - Mazda in Sioux Falls earns an A. 2,019 public reviews average 4.8 stars and 2.2 percent are one or two stars. That ranks it above 93 percent of graded dealers around Sioux Falls.

At a glance

  • Past buyers are close to unanimous. Few complaints across a long record.
  • Complaint share 2.2 percent, lower than the 8.2 percent typical near Sioux Falls
  • Reviewers mention loaner car most, in 12 reviews
  • Closed Sundays · Mazda dealer

Why It Got an A

The star average is 4.8 from 2,019 public reviews. After the grade pulls it toward the national average, it counts as 4.79. 2.2 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

5 star1,793 89%
4 star150 7%
3 star31 2%
2 star6 0%
1 star39 2%

What Reviewers Talk About

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

loaner car 12skilled technicians 10tire rotation 9detailing 7window tinting 5on time 4windshield replacement 3battery replacement 2timely repairs 2collision center 2

Buying From Billion Auto - Mazda in Sioux Falls

Billion Auto - Mazda in Sioux Falls sells new Mazda 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

Address3405 S Westport Ave, Sioux Falls 57106
Phone605-309-0973
Websitebillionmazdaofsiouxfalls.com
Listed featuresOil changes, Service department, Sells used vehicles, Checks, Credit cards, Debit cards, Phone pay
TypeMazda dealer

Hours

Monday9 AM to 8 PM
Tuesday9 AM to 8 PM
Wednesday9 AM to 8 PM
Thursday9 AM to 8 PM
Friday9 AM to 6 PM
Saturday9 AM to 6 PM
SundayClosed

Common Questions

Is Billion Auto - Mazda in Sioux Falls a good dealer?
Billion Auto - Mazda in Sioux Falls earns an A in the PPI Auto Buyer's Guide. Past buyers are close to unanimous. Few complaints across a long record. The grade reads 2,019 public reviews averaging 4.8 stars, with 2.2 percent at one or two stars. It rates past buyers' experience with the dealer, not any single car.
Can I get a car at Billion Auto - Mazda in Sioux Falls inspected before I buy?
Yes. PPI Auto sends an inspector to the car on the lot in Sioux Falls. 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.
Is Billion Auto - Mazda in Sioux Falls open on Sunday?
Its listing shows it closed on Sunday. Hours change, so call before you drive over.

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 Sioux Falls, SD. Found a car here? Book a pre purchase inspection in Sioux Falls, SD before you sign.

Buying from this lot?

Inspect it on the lot

We check the car at Billion Auto - Mazda in Sioux Falls before you sign.

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Inspect a car at Billion Auto - Mazda in Sioux Falls

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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