Transparency Verdict
Billion Automotive earns a C.
Negotiate. Hard.
Average transparency — expect pushback on fees and add-ons. Shoppers who hold the line here consistently save money.
Moderate confidence — based on 15 verified out-the-door quotes · Sioux Falls, SD
Collected Oct 30, 2025 – Apr 16, 2026 · Updated May 4, 2026
The full story
Why Billion Automotive earned this grade
Between October 2025 and April 2026, CarEdge negotiated or logged 15 verified deals with this dealership. We pulled the doc fee, the add-ons, and the gap between advertised and out-the-door price from each one. Then we graded them the way a friend in the business would: on the things that actually cost you money.
✓ What they do well
2 thingsDoc fee is in line with the market
At $249, their doc fee sits at or just under the SD average. Not exceptional, but nothing to fight over.
Advertised pricing is largely honest
On average, the quoted price is only 2.3% above the listing — small enough to be fees, not markup games.
! Where to push back
1 thingAdd-ons are baked into almost every deal
100% of quotes include dealer add-ons, averaging $2,436. This is their business model — inflate the OTD, then hope you don't line-item it.
TipDemand an itemized quote before signing anything. Every add-on is optional — refuse them unless you actually want them.
15 verified OTD quotes from Billion Automotive
Real out-the-door worksheets, not reviews. Click “View Quote” on any row to see the price breakdown.
Recent Quotes
Verified out-the-door prices from real transactions
7 vehicle transactions — 15 individual quotes
2026 Mazda CX-30
Most Common Add-ons
At a Glance
Tips for Billion Automotive
- This dealer often adds $2,436 in dealer add-ons. Request a quote WITHOUT any add-ons upfront. These are almost always removable.
- Doc fee ($249) is at or below national average. One less thing to negotiate.
- Dealer markup is only +2% above listing (excluding taxes). This dealer keeps their fees minimal.
Nearby Rated Dealers
These dealers near Sioux Falls have transparency scores based on verified pricing data.
Frequently Asked Questions
What is Billion Automotive's doc fee?
Billion Automotive charges a typical documentation fee of $249. The SD average is $257. This is based on 15 verified OTD quotes in our database.
Does Billion Automotive add mandatory add-ons?
Billion Automotive adds an average of $2,436 in dealer add-ons when present. Ask for an itemized breakdown and negotiate to remove non-essential items like paint protection, nitrogen tire fill, or VIN etching.
Is Billion Automotive a good dealer?
Billion Automotive has a transparency score of 76/100, earning a Grade C. This score is based on their doc fees, add-on behavior, dealer markup, and data quality from 15 verified OTD quotes. This is an average score. Compare with nearby dealers before making a decision.
How we know this
Every number on this page came from a real deal.
Most dealer review sites scrape star ratings and count angry posts. We do the opposite. CarEdge shops for cars alongside thousands of real buyers every week — and when we negotiate on their behalf, we capture the full out-the-door breakdown the dealer sends back.
For Billion Automotive in Sioux Falls, SD, that has meant 15 verified OTD quotes logged into our database. Each one is a PDF, an email, or a screenshot showing the actual doc fee, the actual add-ons, and the actual final price — not a salesperson's promise.
Fee Transparency
30%Is the doc fee reasonable, or is it just profit? We compare it against the state average — and the legal cap, where one exists.
Add-on Behavior
30%How often does the dealer try to stick on paint protection, theft deterrent, or nitrogen tires? And when they do, how much do they cost you?
Price Accuracy
30%Does the advertised listing price match what you'd actually sign for? We flag dealers whose out-the-door diverges from the listing.
Data Quality
10%More data = more trustworthy grade. Dealers with lots of recent, complete quotes score higher for consistency.
The four numbers behind the grade
Weighted ScoreThe raw component scores — the math that led to C.
Doc Fee Comparison
Pulled 15 quote records · Grades update as new data comes in · Dealers cannot pay to change their score.
Bring real numbers to this dealership
CarEdge Pro unlocks real dealer invoice data, target discounts, and out-the-door estimates — so you can push back on fees and add-ons with the actual numbers.
Try CarEdge Pro*Information provided for general informational purposes only. Scores are independently calculated and do not imply endorsement of or affiliation with any dealer. Verify all information independently before making a purchase decision. See our Terms of Service.