Pontiac G8 Horsepower & Torque (2008 - 2009): How Much Power Does A G8 Have?

The Pontiac G8, produced from 2008 to 2009, was a short-lived but significant full-size sedan that brought Australian engineering to the U.S. market as a rebadged Holden Commodore.

It marked Pontiac's return to rear-wheel-drive performance sedans, filling the gap left by the Bonneville and Grand Prix.

Performance options ranged from a 3.6L V6 producing 256 horsepower and 248 lb-ft of torque to the top-tier GXP trim with a 6.2L V8 delivering 415 horsepower and 415 lb-ft of torque.

Transmission choices included a 5-speed or 6-speed automatic with driver shift control.

The G8 GXP, in particular, stood out as one of Pontiac's most powerful production cars, solidifying its place in the brand's performance legacy.

Scroll down to see the detailed horsepower and torque data below.

Check out the Horsepower And Torque specifications for other makes and models.

2009 Pontiac G8 Horsepower

The Pontiac G8 features a horsepower range from 256 hp produced by a 3.6L VARIABLE-VALVE TIMING DOHC SFI ALUMINUM engine to 415 hp from a 6.2L SFI ALUMINUM engine.

Torque varies from 248 lb-ft with the 3.6L engine to 415 lb-ft with the 6.2L engine, both utilizing rear-wheel drive configurations.

The transmission options include a 5-speed automatic with driver shift control and sport mode for the 3.6L engine, and a 6-speed automatic with similar features for the 6.2L engine.

2008 Pontiac G8 Horsepower

The Pontiac G8 features a 3.6L VARIABLE VALVE TIMING DOHC SFI ALUMINUM engine producing 256 hp and 248 lb-ft of torque, while the 6.0L SFI ALUMINUM engine with ACTIVE FUEL MANAGEMENT generates 361 hp and 385 lb-ft of torque.

Both engine configurations are paired with a rear-wheel-drive layout and a 6-speed automatic transmission with driver shift control and sport mode, enhancing performance capabilities.