• The Pontiac G8 is a potent performer, particularly the GXP model, with the 6.2 L V8 engine.Steve Allen/Photodisc/Getty Images
  
  The Pontiac G8 was a slightly modified Commodore, an Australian-made sports sedan by GM's subsidiary Holden. It is a rear-wheel drive sedan powered by three different engine choices. The G8 was only available in North American markets from 2008 to mid-2009, at which time GM discontinued the Pontiac brand.
  
  

Base Model (3.6 L V6 engine) Performance

• The base model's 3.6 L V6 engine is mated to a five-speed automatic transmission with manual shift control. The base G8's engine produces 248 pound-feet of torque at 2100 RPM and 256 horsepower at 6300 RPM. Estimated zero to 60 mph times for the base model are 7.0 seconds. The base model delivers 17 miles per gallon (mpg) in the city and 25 mpg on the highway.
  
  

GT Model (6.0 L V8 engine) Performance Specifications

• The G8 GT boasts a 6.0 L V8 engine that transfers power to the rear wheels via a six-speed automatic transmission. This V8 engine produces 385 pound-feet of torque at 4400 RPM and 355 horsepower at 5300 RPM. The estimated zero to 60 mph time is 5.1 seconds with a quarter-mile time of 13.6 seconds. The top speed is 140 mph. The 6.0L V8 gives 15 mpg in the city and 24 mpg on the highway.
  
  

GXP Model (6.2 L V8 Engine) Performance specifications

• The GXP model's 6.2 L V8 engine is mated to a six-speed manual or a six-speed automatic transmission. The GXP's engine produces 415 pound-feet of torque at 4600 RPM and 415 horsepower at 5900 RPM. The zero to 60 mph time for the GXP is 4.7 seconds with a quarter-mile time of 13.0 seconds. The GXP is rated at 13 mpg in the city and 20 mpg on the highway.