The standard 2008 Cadillac CTS is equipped with a 3.6-liter V6 engine, while the high-performance CTS-V version uses a V8. In short, most 2008 CTS models run on a V6, with a V8 reserved for the sportier CTS-V variant.
Standard CTS engine
Here are the key specs of the 3.6-liter V6 that powered most 2008 CTS sedans.
- Engine configuration: 3.6-liter DOHC V6 with variable valve timing (VVT)
- Displacement: 3.6 L
- Power output: around 263 horsepower
- Torque: around 253 lb-ft
- Transmission: five-speed automatic with manual shift mode
- Notes: designed for a balance of performance and refinement in the CTS lineup
The 3.6-liter V6 provided the standard CTS with a smooth, capable powerplant suitable for daily driving and highway cruising.
CTS-V: the high-performance option
For buyers seeking more emphasis on speed and track capability, the CTS-V used a larger V8 engine and a performance-focused package.
- Engine: high-output V8 powerplant
- Notes: significantly more horsepower and torque than the standard V6
- Transmission: available with upgraded transmissions aligned to the higher power level
- Performance features: reinforced chassis, brakes, and exhaust tuned for higher-speed driving
The CTS-V represents the performance end of the CTS line for that era, delivering a true V8 configuration in place of the standard V6.
What to know when buying used
If you are evaluating a used 2008 CTS, verify the engine option on the vehicle’s documentation. A CTS with the 3.6L V6 will be labeled accordingly, while the CTS-V will bear the V8 powertrain designation and accompany it with a sportier badge and performance equipment. Checking maintenance history is especially important for high-mileage powertrains.