# Cadillac STS (Sigma) Market Intelligence

> Live inventory, active auctions, and real-time pricing analysis for the Cadillac STS (Sigma).

### Overview
- **Make:** Cadillac
- **Model:** STS
- **Generation:** Sigma
- **Production Years:** 2005–2007
- **Canonical Market URL:** https://www.garagescout.ai/markets/cadillac/sts/sigma
- **Data as of:** September 23, 2026 (latest listing update or sale; 2026-09-23T18:54:37.000Z)
- **Source Coverage:** Curated across Bring a Trailer, PCARMARKET, Cars & Bids, and vetted specialist dealers.

## Trailing 12-Month (TTM) Market Performance
- **Active Live Inventory:** 0 verified cars available
- **Active Live Auctions:** 0 live auctions with open bidding
- **12-Month Confirmed Benchmark Sales:** 7 completed transactions

## Sales Ledger Preview
Showing the 5 most recent of 7 recorded sales (last 12 months).

| Date | Vehicle / Spec | Gearbox | Mileage | Sold Price | Marketplace |
|---|---|---|---|---|---|
| Sep 23, 2026 | Variant not identified | Automatic | 10,000 mi | $16,250 | Bring a Trailer |
| Sep 22, 2026 | Variant not identified | Automatic | 47,000 mi | $4,501 | Bring a Trailer |
| May 14, 2026 | STS-V | Automatic | 99,000 mi | $9,300 | Bring a Trailer |
| Feb 3, 2026 | Variant not identified | Automatic | 42,000 mi | $8,250 | Bring a Trailer |
| Jan 25, 2026 | Variant not identified | Automatic | — | $4,950 | Barrett-Jackson |

## 12-Month Median Sold Price by Variant
| Variant | Sales | Median Price |
|---|---|---|
| STS-V | 2 | — |

## Market Memory (Last 12 Months)
- **Benchmark Sales:** 7 completed transactions
- **Earlier Sales on Record:** 11 since 2023

## Frequently Asked Questions

### What is the current market price of a Cadillac STS (Sigma)?

Price depends on the variant; no variant has 3 or more recorded sales in the trailing 12 months yet.

### How many Cadillac STS (Sigma) examples are currently for sale?

As of September 23, 2026, there are no verified Cadillac STS (Sigma) examples actively listed across monitored specialist dealers or auctions. Enthusiasts can start a GarageScout Hunt to be alerted the moment a matching example hits the market.

### How many Cadillac STS (Sigma) cars sold in the last 12 months?

GarageScout recorded 7 sales of the Cadillac STS (Sigma) in the trailing 12 months, counting confirmed sales only. Restomods, gearbox conversions and sales priced like deposits or placeholders are left out.

### Where do Cadillac STS (Sigma) cars sell?

Of the 7 sales GarageScout recorded in the trailing 12 months, 6 on Bring a Trailer and 1 on Barrett-Jackson.

### Where does GarageScout's Cadillac STS (Sigma) market data come from?

GarageScout's Cadillac STS (Sigma) figures come from the listings and sales it has recorded on Bring a Trailer, Barrett-Jackson and Cars & Bids. Repeat sales of one car matched by VIN count once, and a median sale price is stated only where 3 or more sales in the trailing 12 months back it.

## Related Markets

- **Generations:** [Sigma II](https://www.garagescout.ai/markets/cadillac/sts/sigma-ii)
- **Sigma variants:** [STS-V](https://www.garagescout.ai/markets/cadillac/sts/sigma/sts-v)
- **Model:** [All Cadillac STS markets](https://www.garagescout.ai/markets/cadillac/sts)
- **Make:** [All Cadillac markets](https://www.garagescout.ai/markets/cadillac)

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*Data synthesized by GarageScout Market Intelligence. Preserving vehicle market memory across enthusiast auctions, specialist dealers, and private sales.*