Pontiac G8 2008-2009 Specifications
Complete technical specifications and performance data for the Pontiac G8 2008-2009. Includes detailed engine specifications, dimensions, safety features, and more.
Engine Specifications
Engine
- Type
- V8 OHV 16-valve
- Displacement
- 6.0L (5967 cc)
- Power
- 361 hp @ 5,300 rpm
- Torque
- 385 lb-ft @ 4,400 rpm
- Compression Ratio
- 10.4:1
- Redline
- 6,000 rpm
Transmission Specifications
Transmission
- Type
- 6-Speed Automatic with TAPshift
- Drive System
- Rear-Wheel Drive (RWD)
- Final Drive
- 3.27:1
Dimensions Specifications
Primary Dimensions
- Length
- 196.1 inches
- Width
- 74.8 inches
- Height
- 57.7 inches
- Wheelbase
- 114.8 inches
- Ground Clearance
- 5.9 inches
- Curb Weight
- 3,860 lbs
Chassis & Suspension
- Front Suspension
- Independent MacPherson strut with coil springs
- Rear Suspension
- Independent multi-link with coil springs
- Steering
- Variable power-assisted rack-and-pinion
- Front Brakes
- 12.6-inch ventilated disc
Performance & Fuel Economy
- Zero To 60
- 5.3 seconds
- Quarter Mile
- 13.7 seconds @ 104.5 mph
- Top Speed
- 155 mph electronically limited
- Combined
- 16 mpg
Safety Specifications
- Front
- Dual-stage, dual-threshold front airbags
- Side
- Front side-impact airbags
- Curtain
- Side curtain airbags with rollover sensor
- Other
- Driver's knee airbag
- Stability Control
- StabiliTrak electronic stability control with traction control
- Brake Systems
- ABS with EBD and Brake Assist
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the main differences between the available engine options?
What are the main differences between the available engine options?
The 2008-2009 Pontiac G8 offers two engine options: a 3.6L V6 producing 256 hp and 248 lb-ft of torque, and a 6.0L V8 producing 361 hp and 385 lb-ft of torque. The V6 is more fuel-efficient, while the V8 delivers superior performance and acceleration.
Q2 What transmission options are available?
What transmission options are available?
The G8 comes with either a 5-speed automatic transmission (V6) or a 6-speed automatic transmission (V8). Both transmissions are designed for smooth shifting and optimal performance.
Q3 What are the key safety features?
What are the key safety features?
Standard safety features include anti-lock brakes, stability control, traction control, and front-seat side airbags. Optional features include rear parking sensors and a rearview camera.
Q4 How does the fuel economy compare to competitors?
How does the fuel economy compare to competitors?
The G8 V6 achieves 17 mpg city/25 mpg highway, while the V8 model gets 15 mpg city/24 mpg highway. These figures are competitive with other full-size sedans from the same era, such as the Dodge Charger and Ford Taurus.
Q5 What are the recommended maintenance intervals?
What are the recommended maintenance intervals?
Recommended maintenance includes oil changes every 7,500 miles, tire rotation every 10,000 miles, and a full inspection every 30,000 miles. Brake fluid and coolant should be replaced every 50,000 miles.
Q6 What are the most notable features and options?
What are the most notable features and options?
Standard features include leather upholstery, dual-zone climate control, and a premium audio system. Optional features include a sunroof, navigation system, and upgraded wheels.
Q7 How does the cargo and passenger space compare to competitors?
How does the cargo and passenger space compare to competitors?
The G8 offers 17.5 cubic feet of trunk space and seating for up to five passengers. This is comparable to the Dodge Charger and slightly larger than the Ford Taurus.
Q8 What are the towing and payload capacities?
What are the towing and payload capacities?
The G8 is not rated for towing. Payload capacity is approximately 1,000 lbs, depending on the trim and configuration.
About the Author
Expert automotive knowledge and experience
Alan Montanye
Automotive Technical Writer
ASE Certified Master Technician specializing in vehicle specifications and technical documentation with extensive experience in the automotive industry.
Diagnostic
Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.
Repair
Expert in both traditional mechanical repairs and modern vehicle systems.
Additional Expertise
Documentation
Created over 500 detailed repair guides and technical documents.
Training
Conducted technical training sessions and contributed to repair databases.
Certifications & Research
Certifications
- ASE Master Technician Certification
- Advanced Diagnostic Specialist
- Hybrid/Electric Vehicle Systems
- Performance Tuning Expert
Research & Community
Actively researches emerging technologies and contributes to automotive forums.
Legal Disclaimer
Important information about using this content
Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.
General Information
Warranty & Liability
The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.
We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.