Best Car Dealership Websites in South Dakota
85 South Dakota dealership websites, ranked by how fast and stable they are for real shoppers. The state averages 84, 4 points above the national average — #1 of 51 states. Billion Kia Sioux Falls in Sioux Falls tops the list at 97. Updated Oct 24, 2026.
- Sites ranked
- 85
- Average score
- 84
- +4 vs U.S. average (80)
- Scoring good
- 68%
- 58 sites above 80
- State rank
- #1
- of 51 states by average
Top dealership websites in South Dakota
Rankings by city
Sioux Falls has the best average (87) of the South Dakota cities with 10+ ranked sites.
Largest markets
Cities by average score · 10+ ranked sites
›More cities · 24 cities with fewer than 10 ranked sites
The South Dakota market
Website providers in South Dakota
Bars show share of ranked sites; the number is each provider's average score. 4 sites with no detected provider.
Score spread
- Good81–1005868%
- Needs improvement61–802732%
- Poor0–6000%
Median score 85
Compare other states
Each state's average score; South Dakota is outlined. #1 of 51.
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.