The only real tech feature in the cabin is the Blaupunkt stereo, an impressive sounding rig with a six-disc in-dash changer and an auxiliary input on the face plate. Satellite radio or iPod integration isn't available, but the disc changer reads MP3 CDs. The interface for selecting music from an MP3 CD is decent, if a bit busy. You can see folders and tracks listed on the LCD, but it's not a touch screen. The tuning knob lets you scroll through choices and select music.
This audio system uses 11 speakers, including a centerfill and two subwoofers that get power from a 230 watt amp. The stereo lets you choose from a variety of equalizer presets, such as rock and jazz. We found the audio quality to be very good, with tight bass that didn't rattle the speakers and clear highs. It's not the best system we've heard, but it is substantially better than what we've heard from most six speaker systems.
Despite the voice button on the steering wheel, you can't get Bluetooth cell phone integration on the G8, although OnStar has a hands-free calling service. You can access OnStar by either pushing the steering wheel button or using the traditional OnStar button mounted on the mirror bezel.
We found one other feature we assume to be unique to the land Down Under, a break reminder. You can set a specific amount of drive time in the car, at the end of which it sounds a chime and pops up an image of a tree and a bench, with the words Rest Reminder, on the instrument cluster display. Likewise, you can set speed warnings in the same display that will chime if you go over whichever speed you've indicated.
Under the hood
The engine in the 2008 Pontiac G8 GT gives some bragging rights; you can boast 6 liters of displacement for its V-8. But you might get a little quieter when it comes to horsepower. Its 361 horsepower is substantial, but doesn't really compare with the 400-plus horsepower some automakers, such as BMW, squeeze out of lower displacement engines. The 385 foot-pounds of torque is a more impressive specification, and helped the near 4,000 pound car hit the 0 to 60 mph times we achieved.
Similar to vintage American muscle, the G8 isn't the best handling car around. In cornering, the car leaned pretty seriously, but we didn't feel tire slip. Unlike that American muscle, the G8 uses a thoroughly modern suspension, including a four link independent design in the rear. The limited slip differential will also keep the power flowing to both wheels while cornering. The suspension also absorbed the bumps well without feeling soft, although we felt some float.
The steering felt reasonably responsive, although it wasn't really tight. We didn't notice an excessive amount of understeer, just the normal amount for a road-going sedan. Pontiac includes its Stabilitrak traction and stability control with this model.
We noted the difficulty with finding redline when using the manual mode for the six-speed automatic transmission. In normal drive mode, this transmission shifts early, trying to keep the engine speed low the fuel economy high. This tuning resulted in very noticeable shifts. It's smoother in sport mode as the rpms are better matched to the gear shifts. Manual shifts had that slushbox feel, and the transmission wasn't particularly tuned for sport driving. We didn't notice any aggressive downshifting on our approach to corners.
The biggest drawback with the G8 is the fuel economy. We didn't expect much from such a high-displacement engine, and our expectations were generally met. The EPA rates it at 15 mph city and 24 mpg highway. In our mixed city and freeway driving, we only made 16.4 mpg, and that was with a bias toward the freeway. For emissions, it merely meets the minimum LEV II requirement from California's Air Resources Board.
The base price for our 2008 Pontiac G8 GT was $29,310. We added the Premium package for $1,250 and the Sport package for $600. These packages added no significant tech, just many niceties such as leather and power seats. Along with the $685 destination charge, the total for our test car came out to $31,845, not a bad price if you want a big engine. In fact, there aren't too many V-8s available at this price, but there are some very nice V-6es that afford much better tech and good driving characteristics, such as the Mercedes-Benz C300.
On the cabin tech front, we can't rate the G8 very high. The one bright spot is the Blaupunkt stereo, but that is missing some key features, such as iPod integration or satellite radio. We give it credit for offering navigation and hands-free phone support through OnStar, but not as much compared with a good in-dash system. For performance tech, we like its suspension and its 0 to 60 mph times are impressive. But its poor fuel economy hurts, along with the cornering feel.