Best Car Dealership Websites in Saint Charles, IL
3 dealership websites in Saint Charles, ranked by how fast and stable they are for real shoppers. Saint Charles averages 75, 6 points below the Illinois average. McGrath Kia of St. Charles leads at 81. Updated Oct 17, 2026.
- Sites ranked
- 3
- Average score
- 75
- −6 vs Illinois (81)
- Scoring good
- 33%
- 1 site above 80
- Top score
- 81
- McGrath Kia of St. Charles
Dealership websites in Saint Charles
| RANK | DEALERSHIP | SCORE |
|---|---|---|
| 1 | 81 | |
| 2 | 73 | |
| 3 | 70 |
The Saint Charles market
Website providers in Saint Charles
Bars show share of ranked sites; the number is each provider's average score. 1 site with no detected provider.
Nearby cities
The closest cities with ranked dealership websites.
More cities in Illinois
How the rankings work
Each website's score (0–100) comes from Google's Chrome UX Report — what real Chrome users experienced over a roughly 28-day window. It weights five field metrics at the 75th percentile: Largest Contentful Paint, Cumulative Layout Shift, Interaction to Next Paint, First Contentful Paint and Time to First Byte. Above 80 is good, 61–80 needs improvement, 60 or less is poor.
It measures website performance, not a dealership's sales or service. Active dealership websites with enough Chrome traffic to be measured are ranked; the rest aren't scored rather than scored low.