Cadillac STS
The sharp-edged Sigma-platform flagship that brought the Northstar V8 into the modern era.
- Power
- 320 bhp
- 0–60 mph
- 6.0 s
- Top speed
- 155 mph
- Est. value
- $5k–$13k
About the Cadillac STS
The Cadillac STS (Seville Touring Sedan) was the brand's mid-size luxury flagship, designed to compete with the BMW 5 Series and Mercedes-Benz E-Class. Built on the rear-wheel-drive Sigma platform shared with the CTS, it represented a significant shift from the front-drive architecture of its predecessor. The 4.6-litre Northstar V8 provided effortless, linear power, while the available Magnetic Ride Control suspension offered a sophisticated balance of comfort and handling. Though it struggled to match the interior refinement of its German rivals, the STS remains a notable example of Cadillac's 'Art and Science' design era.
Cadillac STS specs
The Cadillac STS produces 320 bhp (239 kW) and 427 Nm (315 lb-ft) of torque. It reaches 60 mph in 6.0 seconds and has a top speed of 155 mph (250 km/h).
| Make | Cadillac |
|---|---|
| Model | STS |
| Trim | 4.6 V8 |
| Years | 2005–2010 |
| Type | Luxury |
| Body style | Sedan |
| Country | United States |
| Original price | About $56,000 when new |
| Engine | 4.6-litre Northstar V8 |
|---|---|
| Displacement | 4,565 cc (4.6 litres) |
| Induction | Naturally aspirated |
| Power | 320 bhp (239 kW) at 6,400 rpm |
| Torque | 427 Nm (315 lb-ft) |
| Redline | 6,700 rpm |
| 0–60 mph | 6.0 s |
| Top speed | 155 mph (250 km/h) |
| Transmission | 6-speed automatic |
| Drivetrain | Rear-wheel drive |
| Weight | 1,840 kg (4,057 lb) |
| Power-to-weight | 174 bhp per tonne |
Typical figures for the standard car; options, markets and model years vary. Where our specs come from
How much is a Cadillac STS worth?
A typical Cadillac STS is estimated to be worth $4,500 – $13,000 (about £3,400 – £9,500).
Its original price when new was about $56,000.
Values are directional estimates for a typical example, not appraisals. Condition, mileage, history and specification all change what a real car is worth. Pound figures use the exchange rate of 3 November 2026. How values are estimated
Cadillac STS rarity in CarSpot
The Cadillac STS is an Uncommon card in CarSpot, with a rarity score of 15 out of 100. Hot hatches and premium sporty cars. An Uncommon card is worth 20 XP.
Each model's tier starts from a 0–100 score based on its value plus its power or production numbers. Once enough players have spotted a model, how often it is spotted can move it up or down one tier. How CarSpot rarity works
Rarity is a collectible game mechanic, not an assessment of real-world scarcity or value.
Cadillac STS fun facts
- The STS was the first Cadillac sedan to offer an all-wheel-drive configuration, though rear-wheel drive remained the standard enthusiast choice.
- Its Magnetic Ride Control system was so effective that the technology was later licensed for use in Ferraris and other high-end European sports cars.
- The 2008-2011 facelift models are distinguished by a larger, more aggressive grille inspired by the Cadillac Sixteen concept car.