The Slowest Selling New Cars in South Dakota
These are the new cars and trucks sitting on dealer lots the longest in South Dakota right now. With high inventory and weak demand, these vehicles offer the best opportunities to negotiate discounts below MSRP.
In South Dakota: The 2026 RAM Promaster Cargo Van is the slowest-selling car with 1665 days of supply — while the 2026 RAM Promaster Cargo Van has the lowest volume with just 1 units sold in 45 days.
Slowest Selling New Cars in South Dakota (by Market Day Supply)
Ranked by the highest Market Day Supply in South Dakota — vehicles with the most days of inventory sitting on dealer lots.
| # | Vehicle | MDS | Sold |
|---|---|---|---|
| 1 |  2026 RAM Promaster Cargo Van | 1,665 days | 1 |
| 2 |  2026 Jeep Gladiator | 1,050 days | 3 |
| 3 |  2026 Ford Bronco | 589 days | 12 |
| 4 | 2026 Jeep Grand Cherokee L | 585 days | 3 |
| 5 |  2026 Mercedes-Benz GLC | 420 days | 3 |
| 6 | 2026 Jeep Cherokee | 386 days | 7 |
| 7 | 2026 Jeep Grand Cherokee | 378 days | 10 |
| 8 |  2026 Volvo XC90 | 330 days | 3 |
| 9 |  2026 Buick Envision | 311 days | 11 |
| 10 | 2026 Buick Envista | 304 days | 4 |
Key Data Insights
- The 5 slowest sellers in South Dakota average 862 days on lot — significant negotiating leverage for buyers.
- Jeep appears 4 times in South Dakota's top 10 slowest sellers.
What Is Market Day Supply?
Market Day Supply (MDS) measures how many days it would take to sell all current inventory of a vehicle at the current rate of sales. A low MDS (under 30 days) means the vehicle is selling faster than dealers can stock it. A high MDS (over 100 days) means there's more inventory than demand — which is where buyers have leverage to negotiate discounts.
How to Find Deals on Slow Sellers in South Dakota
- Negotiate aggressively: Vehicles with high MDS have been sitting on lots — dealers are motivated to move them. You can often negotiate well below MSRP.
- Look for incentives: Manufacturers frequently offer rebates and special financing on slow-selling models. Check our fastest selling cars in South Dakota page to compare demand.
- Find transparent dealers: Use CarEdge dealer ratings to find dealers in South Dakota that offer fair pricing.
- Compare prices: Use CarEdge car search to compare prices across dealerships in South Dakota.
Our Data & Methodology
New Car Market Snapshot in South Dakota
8,611
Total New Listings
6,535
On Dealer Lots
2,076
In Transit (24%)
0
Unavailable / Excluded
How We Calculate Market Day Supply
Market Day Supply (MDS) measures how long it would take to sell all available inventory at the current sales pace. We calculate it as:
Importantly, we use on-lot inventory only — vehicles physically at dealerships and available for immediate purchase. We exclude:
- In-transit vehicles (24% of market) — cars that have been built and shipped but haven't arrived at the dealer yet. These aren't available to test drive or buy today.
- Excluded listings — vehicles flagged as unavailable, sold, or otherwise not actively for sale.
We also exclude vehicles with fewer than 100 on-lot listings nationwide. This filters out ultra-low-volume models (limited editions, commercial variants, etc.) where small inventory swings would produce misleading MDS numbers.
This means our "For Sale" numbers reflect what you'd actually find on a dealer lot or available to purchase on CarEdge car search — not inflated totals from industry databases that count every car on a truck.
Why This Matters
For newly launched or redesigned models, the difference can be dramatic. A car might have 20,000 units in the industry pipeline, but only 8,000 on dealer lots. Using the larger number would make the car look like it's sitting unsold when in reality dealers can barely keep up. Our on-lot methodology gives you the most accurate picture of what's actually happening at dealerships.
Data Sources
Inventory and sales data is aggregated from dealership listings across the United States, covering new vehicles at the year/make/model level. Sales volume reflects the past 45 days. Data was last updated on April 6, 2026.
Related Resources
Data analysis by the CarEdge Research Team. Our data covers 6,535 vehicles on dealer lots in South Dakota.