Best Car Dealerships in Rockford, Ranked by CarEdge Data
Key Takeaways
- The top 15 car dealerships in Rockford across all brands, ranked by CarEdge on verified out-the-door quotes — not star ratings.
- Biggers Mazda (Mazda, Elgin) is the most transparent dealership in the Rockford metro by verified data.
- Brand-by-brand rankings are linked below if you already know what you're shopping.
- Get an OTD quote in writing before you visit any dealer. CarEdge tracks real prices, not advertised ones.
This is the CarEdge Dealer Transparency Index ranking for car dealerships in the Rockford metro — every brand, scored on verified out-the-door quotes, not Google star ratings.
We graded 43 dealerships across the Rockford area; below are the 15 most transparent by score. Already know your brand? Jump to the brand-by-brand rankings below.
About the CarEdge Dealer Transparency Index
Most dealer rankings come from Google star ratings and Yelp reviews — easy to game, impossible to verify. The CarEdge Dealer Transparency Index is different. We score every dealer using verified out-the-door quotes: real PDFs, emails, and screenshots from actual transactions.
Each dealer’s transparency score (out of 100) is weighted across four dimensions:
- Fee Transparency (30%) — Is the doc fee reasonable compared to the state average?
- Add-on Behavior (30%) — How often does the dealer bundle add-ons, and at what cost?
- Price Accuracy (30%) — Does the listing price match the actual OTD price?
- Data Quality (10%) — More verified quotes mean higher confidence in the grade.
Grades: A (90–100), B (80–89), C (70–79), D (60–69), F (below 60).
Top 15 Car Dealerships in Rockford
Ranked by CarEdge transparency score across all brands, highest to lowest.
#1 — Biggers Mazda
Mazda · Grade: A · Score: 100/100 · Elgin, IL
Biggers Mazda is an A-grade Mazda dealer in Rockford on verified out-the-door data — 100/100 across 31 verified quotes.
- Doc fee: $375 — above the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 2.0% below the advertised listing
- Verified quotes: 31
See full review & verified quotes →
#2 — Gerald Hyundai Of North Aurora
Hyundai · Grade: A · Score: 100/100 · North Aurora, IL
Gerald Hyundai Of North Aurora is an A-grade Hyundai dealer in Rockford on verified out-the-door data — 100/100 across 9 verified quotes.
- Doc fee: $372 — above the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 2.4% below the advertised listing
- Verified quotes: 9
See full review & verified quotes →
#3 — Mercedes-Benz Of St. Charles
Mercedes-Benz · Grade: A · Score: 100/100 · St. Charles, IL
Mercedes-Benz Of St. Charles is an A-grade Mercedes-Benz dealer in Rockford on verified out-the-door data — 100/100 across 7 verified quotes.
- Doc fee: $369 — above the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 2.9% above the advertised listing
- Verified quotes: 7
See full review & verified quotes →
#4 — Fox Valley Volkswagen Crystal Lake
Volkswagen · Grade: A · Score: 100/100 · Crystal Lake, IL
Fox Valley Volkswagen Crystal Lake is an A-grade Volkswagen dealer in Rockford on verified out-the-door data — 100/100 across 6 verified quotes.
- Doc fee: $380 — above the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 1.0% below the advertised listing
- Verified quotes: 6
See full review & verified quotes →
#5 — Gerald Kia North Aurora
Kia · Grade: A · Score: 100/100 · North Aurora, IL
Gerald Kia North Aurora is an A-grade Kia dealer in Rockford on verified out-the-door data — 100/100 across 6 verified quotes.
- Doc fee: $373 — above the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 1.9% below the advertised listing
- Verified quotes: 6
See full review & verified quotes →
#6 — Napleton Buick Gmc Crystal Lake
Buick · Grade: A · Score: 100/100 · Crystal Lake, IL
Napleton Buick Gmc Crystal Lake is an A-grade Buick dealer in Rockford on verified out-the-door data — 100/100 across 6 verified quotes.
- Doc fee: $374 — above the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 4.4% below the advertised listing
- Verified quotes: 6
See full review & verified quotes →
#7 — Castle Kia Mchenry
Kia · Grade: A · Score: 100/100 · McHenry, IL
Castle Kia Mchenry is an A-grade Kia dealer in Rockford on verified out-the-door data — 100/100 across 5 verified quotes.
- Doc fee: $378 — above the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 6.6% below the advertised listing
- Verified quotes: 5
See full review & verified quotes →
#8 — Brilliance Subaru
Subaru · Grade: A · Score: 99/100 · Elgin, IL
Brilliance Subaru is an A-grade Subaru dealer in Rockford on verified out-the-door data — 99/100 across 17 verified quotes.
- Doc fee: $396 — above the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 1.8% below the advertised listing
- Verified quotes: 17
See full review & verified quotes →
#9 — Hawk Ford Of St. Charles
Ford · Grade: A · Score: 99/100 · Saint Charles, IL
Hawk Ford Of St. Charles is an A-grade Ford dealer in Rockford on verified out-the-door data — 99/100 across 6 verified quotes.
- Doc fee: $406 — above the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 8.6% below the advertised listing
- Verified quotes: 6
See full review & verified quotes →
#10 — Audi Exchange St. Charles
Audi · Grade: A · Score: 99/100 · St. Charles, IL
Audi Exchange St. Charles is an A-grade Audi dealer in Rockford on verified out-the-door data — 99/100 across 5 verified quotes.
- Doc fee: $411 — above the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 0.5% below the advertised listing
- Verified quotes: 5
See full review & verified quotes →
#11 — Brilliance Honda
Honda · Grade: A · Score: 98/100 · Crystal Lake, IL
Brilliance Honda is an A-grade Honda dealer in Rockford on verified out-the-door data — 98/100 across 13 verified quotes.
- Doc fee: $375 — above the IL average of $366
- Add-ons: 8% of quotes, avg $69
- Listing accuracy: 1.0% below the advertised listing
- Verified quotes: 13
See full review & verified quotes →
#12 — Castle Subaru Mchenry
Subaru · Grade: A · Score: 98/100 · McHenry, IL
Castle Subaru Mchenry is an A-grade Subaru dealer in Rockford on verified out-the-door data — 98/100 across 13 verified quotes.
- Doc fee: $319 — below the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 5.2% below the advertised listing
- Verified quotes: 13
See full review & verified quotes →
#13 — Toyota Of Fox Lake
Toyota · Grade: A · Score: 98/100 · Fox Lake, IL
Toyota Of Fox Lake is an A-grade Toyota dealer in Rockford on verified out-the-door data — 98/100 across 12 verified quotes.
- Doc fee: $400 — above the IL average of $366
- Add-ons: None detected in verified quotes
- Listing accuracy: 0.9% above the advertised listing
- Verified quotes: 12
See full review & verified quotes →
#14 — Mcgrath Honda Of St. Charles
Honda · Grade: A · Score: 98/100 · St. Charles, IL
Mcgrath Honda Of St. Charles is an A-grade Honda dealer in Rockford on verified out-the-door data — 98/100 across 11 verified quotes.
- Doc fee: $377 — above the IL average of $366
- Add-ons: 9% of quotes, avg $82
- Listing accuracy: 1.3% above the advertised listing
- Verified quotes: 11
See full review & verified quotes →
#15 — Bmw Of Crystal Lake
BMW · Grade: A · Score: 98/100 · Crystal Lake, IL
Bmw Of Crystal Lake is an A-grade BMW dealer in Rockford on verified out-the-door data — 98/100 across 10 verified quotes.
- Doc fee: $378 — above the IL average of $366
- Add-ons: 10% of quotes, avg $50
- Listing accuracy: 5.5% below the advertised listing
- Verified quotes: 10
See full review & verified quotes →
Rockford Dealer Rankings by Brand
Shopping a specific brand in Rockford? These rankings drill into each:
- Best Honda Dealerships in Rockford
- Best Hyundai Dealerships in Rockford
- Best Kia Dealerships in Rockford
- Best Toyota Dealerships in Rockford
Rockford Car Dealer Rankings at a Glance
| # | Dealer | City | Grade | Score | Doc Fee | Add-Ons | Quotes |
|---|---|---|---|---|---|---|---|
| 1 | Biggers Mazda | Elgin | A | 100 | $375 | $0 | 31 |
| 2 | Gerald Hyundai Of North Aurora | North Aurora | A | 100 | $372 | $0 | 9 |
| 3 | Mercedes-Benz Of St. Charles | St. Charles | A | 100 | $369 | $0 | 7 |
| 4 | Fox Valley Volkswagen Crystal Lake | Crystal Lake | A | 100 | $380 | $0 | 6 |
| 5 | Gerald Kia North Aurora | North Aurora | A | 100 | $373 | $0 | 6 |
| 6 | Napleton Buick Gmc Crystal Lake | Crystal Lake | A | 100 | $374 | $0 | 6 |
| 7 | Castle Kia Mchenry | McHenry | A | 100 | $378 | $0 | 5 |
| 8 | Brilliance Subaru | Elgin | A | 99 | $396 | $0 | 17 |
| 9 | Hawk Ford Of St. Charles | Saint Charles | A | 99 | $406 | $0 | 6 |
| 10 | Audi Exchange St. Charles | St. Charles | A | 99 | $411 | $0 | 5 |
| 11 | Brilliance Honda | Crystal Lake | A | 98 | $375 | $69 | 13 |
| 12 | Castle Subaru Mchenry | McHenry | A | 98 | $319 | $0 | 13 |
| 13 | Toyota Of Fox Lake | Fox Lake | A | 98 | $400 | $0 | 12 |
| 14 | Mcgrath Honda Of St. Charles | St. Charles | A | 98 | $377 | $82 | 11 |
| 15 | Bmw Of Crystal Lake | Crystal Lake | A | 98 | $378 | $50 | 10 |
How to Use This Data When You Shop
- Get an OTD quote in writing before you visit. Any dealer can send a worksheet by email — if they won’t, that’s a red flag.
- Ask for a quote with zero add-ons. Everything in the F&I office is optional. Say “please remove all dealer add-ons” and see what the price does.
- Anchor to the OTD, not the listing. Dealers with a gap between advertised price and final OTD aren’t being straight with you. Don’t negotiate off the listing number.
- Compare three dealers minimum. Even within the same metro, doc fees, add-on policies, and listing accuracy vary widely. Use this ranking as your shortlist.
Rankings are generated from the CarEdge Dealer Transparency Index, a public methodology that scores dealers on verified out-the-door quotes — not Google star ratings or paid placements. Data updated quarterly. Last updated: Q3 2026.
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