Cadillac CTS Sigma I
Sold prices, market value and cars for sale
As of October 20, 2026, Shifty has recorded 8 public sales of the Cadillac CTS Sigma I. The records run from August 2024 to October 2026. In the past 12 months, 6 sold at a median of $8,925. The Shifty Estimate for the CTS is $9,900.
Versions
About the Cadillac CTS Sigma I
- Built
- 2003 to 2007
- Versions
- 1
- Body styles
- Sedan
- Engine
- V6, 3.2L
- Power
- 220 hp
- 0 to 60
- 7.2 s
- Top speed
- 140 mph
The Cadillac CTS Sigma I was built from 2003 to 2007.
The CTS, the most traded version: The first-generation CTS marked Cadillac's bold departure from its stodgy past, introducing Art & Science design language that would define the brand for decades. This angular, knife-edged sedan was GM's answer to the BMW 3 Series, featuring a rear-wheel-drive architecture that hadn't been seen in a Cadillac sedan since the 1980s. The base model came with a 2.8L or 3.6L V6, but it was the chassis dynamics that impressed—finally, a Cadillac that could carve corners. While early examples suffered from interior quality issues typical of GM's era, the CTS established credibility for Cadillac's performance ambitions. The clean, geometric styling has aged remarkably well, and these early cars represent an important inflection point in American luxury. Clean, low-mileage examples are increasingly sought after as affordable entry points into modern classic territory, especially as collectors recognize the CTS's role in Cadillac's renaissance.
The market
Recent sales
Common questions
How much does a Cadillac CTS Sigma I cost?
In the past 12 months, 6 sold at a median of $8,925. Half of the 8 most recent sales landed between $4,750 and $13,100. The Shifty Estimate is $9,900.
What is a Cadillac CTS Sigma I worth today?
The Shifty Estimate for the CTS is $9,900. It describes a well-kept example.
What is the most expensive Cadillac CTS Sigma I ever sold?
The highest sale on file is $28,000, for a 2005 Cadillac CTS at Bring a Trailer. It sold on Jun 19, 2026. It showed 6,000 miles.
How many Cadillac CTS Sigma I examples have sold?
Shifty has recorded 8 public sales since August 2024. 6 came in the past 12 months. The most recent sold for $4,500 on Oct 7, 2026.
Where do Cadillac CTS Sigma I examples sell?
Of the last 8 sales with a known venue, 4 were at Cars & Bids. The rest: Bring a Trailer (3) and Hagerty Marketplace (1).
How many miles do Cadillac CTS Sigma I examples have when they sell?
Across the last 8 sales with a recorded odometer, the median was 52,500 miles. The lowest showed 6,000 miles and the highest 144,200 miles.
Where do Shifty's Cadillac CTS Sigma I prices come from?
Every figure here comes from recorded public sales and live listings of the Cadillac CTS Sigma I. Each sale is filed by version and year. Shifty leaves out cars without a clean title, mismatched cars and implausible prices. The Shifty Estimate weights the most recent sales most heavily. These figures were read on October 20, 2026.