2008 Pontiac G8

Find Another Pontiac G8
16 CITY / 24 HWY
J.D. Power data for this year, make and model is not available at this time.


What Changed for 2008:
  • First application of GM Zeta rear-wheel-drive (RWD) platform

  • New model rear-drive performance sedan

  • G8 and GT models

  • 6.0-liter small-block V-8 engine for GT

  • 6-speed automatic or optional 6-speed manual transmission on GT

  • 18-inch aluminum wheels

  • 4-wheel anti-lock (ABS) disc brakes with standard traction control

  • Standard electronic stability control

  • OnStar and XM satellite radio
The G8 is the first GM model to employ the automaker's new Zeta RWD architecture designed to accommodate production for global left- and right-hand-drive markets. It is a 5-passenger, front-engine, rear-drive midsize sedan, with which Pontiac intends to compete with the Nissan Maxima and Dodge Charger. The G8 features the flared fenders, wide tires, dual-port grille, hood scoops and front fender vents that often characterize the Pontiac look. The G8's interior features a driver-oriented instrument cluster with gauges positioned in direct line-of-sight and an electronic driver information center. Seating is designed to be supportive for tight cornering, according to Pontiac.

Model Lineup
The 2008 Pontiac G8 is available in two models: G8 and G8 GT. Standard equipment includes 18-inch aluminum wheels; power-adjustable front seats; fog lamps; chrome exhaust tips; rear lip spoiler; 4-wheel independent suspension; and 4-wheel disc brakes with ABS and traction control.Step up to the G8 GT and you get the more powerful 6.0-liter V-8 engine; fully independent suspension and MacPherson front struts and multi-link rear; bigger brakes; limited-slip rear differential; clear taillamp lenses; and quad chrome exhaust tips. Optional two-tone cloth or leather combination in the GT's interior pairs black with either red or blue inserts, and color-matched instrument faces. A sport package is available for both G8 and GT models, including specific wheels (19-inch aluminum wheels and performance tires on the GT); leather-wrapped steering wheel and shift knob; alloy pedals; and a rear wing spoiler.

A 3.6-liter, DOHC (dual overhead cam) V-6 engine with variable valve timing powers the 2008 Pontiac G8, delivering 261 hp at 6300 rpm and 250 lb.-ft. of torque at 3200 rpm. The engine is mated to a 5-speed automatic transmission with manual shift mode. In the more powerful G8 GT, the power comes from a 6.0-liter V-8 engine with 362 hp at 5700 rpm and 391 lb.-ft. of torque at 4900 rpm. It is paired with a standard 6-speed automatic transmission with manual shift mode and active fuel management, GM's fuel-saving, engine cylinder-deactivation technology. An optional 6-speed manual transmission is also available. EPA fuel-economy estimates are not yet available.

All 2008 Pontiac G8 models feature 4-wheel ABS disc brakes with traction control; electronic stability control; OnStar; seat-mounted thorax air bags and dual-stage frontal air bags for front passengers with automatic passenger-sensing system; and roof-rail side-impact air bags for both seating rows. The 2008 Pontiac G8 and G8 GT have not been rated by the National Highway Traffic Safety Administration (NHTSA), for crash or rollover tests.

Pontiac says it's got all the technology bases covered with the 2008 G8 and G8 GT: standard 7-speaker audio system with MP3 input jack; available 230-watt Blaupunkt 6-disc CD player with 11 speakers, including two 8-inch subwoofers; 6 standard air bags; StabiliTrak stability system and full-function traction control; available limited-slip differential; and OnStar with one-year service with available Turn-by-Turn Navigation. XM satellite radio is also standard, and includes three free months of programming.

J.D. Power Ratings

J.D. Power data for this year, make and model is not available at this time

Power Circle Scoring Legend:

Among the best
Better than most
About average
The rest
*Please note that JDPower.com Power Circle Ratings may not include all information used to determine J.D. Power awards. Learn more about how J.D. Power Ratings are calculated.
  • Name 4dr Sdn Transmission Automatic w/OD, MSRP 26910.00 Engine 3.6L/217 City/Hwy MPG 17/25
  • Name GT (4dr Sdn) Transmission Automatic w/OD, MSRP 29310.00 Engine 6.0L/364 City/Hwy MPG 15/24
  • Seats, front bucket, Sport
  • Seat adjuster, driver 4-way power
  • Seat adjuster, passenger 4-way power
  • Seat, rear pass-through with dual cup holders (Includes rear center armrest when (PCQ) Premium Package is ordered.)
  • Floor mats, carpeted front
  • Floor mats, carpeted rear
  • Sill plates
  • Steering column, tilt and telescopic
  • Steering wheel, 4-spoke
  • Steering wheel controls, mounted audio and Driver Information Center, illuminated
  • Instrumentation, analog with speedometer, odometer, tachometer and fuel and temperature gauges
  • Driver Information Center with trip odometer, oil life, tire pressure, voltmeter, average speed, distance and time to go, average fuel, fuel used, overspeed and underspeed warnings and available help menu
  • Tire Pressure Monitoring System
  • Retained accessory power, power windows and audio system remain operational after ignition is switched off for 10 minutes or until a door is opened
  • Door locks, power
  • Windows, power, driver and front passenger, includes Express-Down
  • Cruise control, electronic with set and resume speed
  • Trunk release, power, located in glovebox
  • Remote vehicle starter system, with lock control, included in key fob
  • Theft-deterrent alarm system, immobilizer and PIN code audio system
  • Air conditioning, single-zone manual
  • Defogger, rear-window electric
  • Power outlets, 2 auxiliary, 12-volt, 1 in center instrument panel and 1 in center console
  • Glovebox, front, lockable
  • Cup holders, front and rear, molded in door trim, center console and rear seat pass-through
  • Mirror, inside rearview with compass and OnStar buttons
  • Lighting, interior front and rear courtesy, front and rear dome and cargo area (Not available when (CF5) power sunroof is ordered.)
  • Shift lever
  • Map pocket, front seatback (Requires interior color (46C) Onyx or (47C) Onyx/Red Premium Cloth.)
  • Visors, driver and front passenger illuminated vanity mirrors
  • Key, common, vehicular unique
  • Key, folding blade, side-milled
  • Key, fixed blade, side-milled
  • Cargo net, trunk
  • Steering wheel, leather-wrapped
  • Air conditioning, dual-zone automatic climate control with individual climate settings for driver and front passenger
  • Decklid, liner
  • Tires, P245/45R18-96V all-season, blackwall
  • Wheels, 18" (45.7 cm) silver-painted aluminum, split-spoke
  • Tire, compact spare, includes steel wheel
  • Hood scoops, dual
  • Spoiler, rear low-profile
  • Grille, dual-port with Black inserts and Chrome surround
  • Headlamps, halogen, projector-beam with automatic exterior lamp control, flash-to-pass and daytime running
  • Fog lamps, front
  • Mirrors, outside power-adjustable, remote, body-color, manual-folding
  • Glass, tinted
  • Accents, chrome window surround
  • Wipers, front intermittent, speed-sensitive
  • License plate bracket, front
  • Wheels, 18" (45.7 cm) machine-faced aluminum, 5-spoke with silver painted inset
  • Tires, P245/45R18-96V summer-only performance, blackwall
  • Tire inflation kit, includes inflator and tire sealant
  • Engine, 3.6L Variable Valve Timing DOHC V6 SFI aluminum (256 hp [190.9 kW] @ 6300 rpm, 248 lb-ft of torque [334.8 N-m] @ 2100 rpm)
  • Transmission, 5-speed automatic with Driver Shift Control and Sport Mode
  • Rear axle, 2.92 ratio
  • Drivetrain, rear-wheel drive
  • Battery, heavy-duty, trunk-mounted, maintenance-free with rundown protection
  • Suspension, Performance
  • Steering, power rack-and-pinion
  • Brakes, 4-wheel antilock, 4-wheel disc with Electronic Brake Assist and Electronic Brake Force Distribution
  • Exhaust, dual-outlet stainless-steel
  • Exhaust outlets, dual polished stainless-steel tips
  • Engine, 6.0L V8 SFI aluminum with Active Fuel Management (361 hp [269.2 kW] @ 5300 rpm, 385 lb-ft of torque [519.8 N-m] @ 4400 rpm)
  • Transmission, 6-speed automatic with Driver Shift Control and Sport Mode
  • Differential, limited slip rear
  • Brakes, 4-wheel antilock, 4-wheel disc with Electronic Brake Assist and Electronic Brake Force Distribution (Includes larger front and rear rotors.)
  • Exhaust outlets, quad polished stainless-steel tips
    • StabiliTrak, vehicle stability enhancement system
    • Traction control, all-speed, powertrain and brake modulated
    • OnStar, 1-year of Safe and Sound plan. Includes Automatic Notification of Air Bag Deployment, Stolen Vehicle Location Assistance, Emergency Services, Roadside Assistance, Remote Door Unlock, OnStar Vehicle Diagnostics, Hands-Free Calling, AccidentAssist and Remote Horn & Lights (OnStar services require vehicle electrical system (including battery), wireless service and GPS satellite signals to be available and operating for features to function properly. OnStar acts as a link to existing emergency service providers. OnStar Vehicle Diagnostics available on most 2004 MY and newer GM vehicles. Diagnostic capability varies by model. Visit onstar.com for system limitations and details.)
    • Air bags, dual-stage frontal and side-impact, driver and front passenger and head-curtain side-impact, front and rear outboard seating positions (Head curtain side air bags are designed to help reduce the risk of head and neck injuries to front and rear seat occupants on the near side of certain side-impact collisions. Always use safety belts and the correct child restraints for your child's age and size, even in vehicles equipped with air bags. Children are safer when properly secured in a rear seat. See the vehicle's Owner's Manual and child safety seat instructions for more safety information.)
    • Safety belts, 3-point, all positions
    • LATCH system (Lower Anchors and Top tethers for CHildren), for child safety seats
    • Door locks, rear child security
    • Audio system, AM/FM stereo with CD player, 5.0" with multi-function display, seek-and-scan, speed-compensated volume, TheftLock, equalizer, available help menu and auxiliary input jack for iPod/MP3 player
    • Audio system feature, Blaupunkt 7-speaker system with front center speaker
    • Antenna, roof-mounted, fixed mast, radio
    • Audio system, AM/FM stereo with 6-disc CD changer and MP3 playback, 6.5" color LCD with multi-function display, seek-and-scan, speed-compensated volume, TheftLock, equalizer, available help menu and auxiliary input jack for iPod/MP3 player
    • Audio system feature, Blaupunkt premium 11-speaker system, 230-watt with amplifier and sub-woofers

    The Latest New Car Previews, Buyer's guides, Articles and more from J.D. Power: