2005 Pontiac G6 Sedan Review | Edmunds.com

2005 Pontiac G6 Sedan

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Certified Pre-Owned (CPO) is a category of used car. Often late-model vehicles, they have been inspected, refurbished, if necessary, and are under warranty by the manufacturer.
Pontiac G6 Features and Specs

Features & Specs

  • Engine 3.5 L V 6-cylinder
  • Drivetrain Front Wheel Drive
  • Transmission 4-speed Automatic
  • Horse Power 200 hp @ 5600 rpm
  • Fuel Economy 20/29 mpg
  • Bluetooth No
  • Navigation No
  • Heated Seats No

Review of the 2005 Pontiac G6

  • With the G6's stylish duds, roomy interior and distinctive features, Pontiac finally has a serious contender in the midsize sedan segment.

  • Safety
  • Pros

    Crisp handling, lots of rear-seat room, plenty of standard features, innovative panoramic sunroof.

  • Cons

    A few low-buck interior bits, panoramic sunroof takes away rear-seat headroom, down on power compared to class leaders.

  • What's New for 2005

    The G6 is an all-new midsize sedan replacement for the ancient Grand Am.

Full 2005 Pontiac G6 Review

What's New for 2005

The G6 is an all-new midsize sedan replacement for the ancient Grand Am.


Originally introduced in coupe form in 1973, the Grand Am has carried out Pontiac's midsize sedan duties since the mid-1980s. The most recent Grand Am has roots dating back to 1985, when Pontiac introduced its front-drive "European-inspired" version. Time has not been kind to the Grand Am, as subsequent redesigns in the 1990s did little to bring the car up to class standards. Pontiac knew it needed a competitive replacement, and none too soon. The short answer was to simply make a great Pontiac sedan based on GM's latest-and-greatest midsize platform, the Epsilon architecture. It's taken awhile, but it looks like GM has finally gotten this platform-sharing thing down. We've never been opposed to the idea per se, but in too many instances in the past, cars that shared platforms were just too similar for our tastes. The G6 is the third production car to utilize General Motors' Epsilon platform but it wouldn't be overstating it to say most new car buyers will never see the family resemblance. If it seems like the G6 looks a little bigger than its stablemate, the Chevrolet Malibu, that's because the Pontiac uses the lengthened version of the Epsilon platform like the Malibu Maxx. This long-wheelbase platform provides two main benefits -- more rear-seat room and better handling. The extra length makes for truly big-car backseat space, and passengers will enjoy plenty of legroom. The long wheelbase also helps the G6 deliver a smooth and stable ride. As with most Pontiacs, the G6 is heavy on style -- only this time around the styling is bold without being tacky. The car stands out but does not look garish and, thankfully, the plastic cladding of Pontiacs past has been ditched in favor of clean, simple lines. The G6 offers just enough muscle to back up the sporty looks. The G6 is powered by GM's tried-and-true 3.5-liter V6, good for 200 horsepower. Pontiac is trying to keep (or rebuild) its performance car customer base by offering a shift-it-yourself automatic that will hit redline without upshifting -- in other words, true manual control. A unique option on the G6 is a panoramic sunroof that opens in four sections and remains exposed when it's open. The effect is that it looks like a roof spoiler. Combined with the small antenna that resides at the front edge of the roof, the G6 tends to look a little European. Unfortunately, this sunroof takes up a bit too much rear-seat headroom. Overall, the G6 features a winning combination of bold styling, a cavernous interior and unique features, all at a competitive price.

Body Styles, Trim Levels, and Options

The four-door G6 comes in two trim levels, base and GT. Generous standard equipment on the base model includes air conditioning; cruise control; power windows, locks and mirrors; keyless entry; a 60/40 split-folding rear seat; a CD player; and a tilt/telescoping steering wheel. The GT adds power-adjustable pedals, an eight-speaker Monsoon sound system, a rear spoiler, alloy wheels and a sport suspension. Notable options include a remote start system, XM Satellite Radio and chrome alloy wheels. Two power sunroof options are available -- a traditional power glass panel, as well as an innovative panoramic roof with four glass panels that fold accordion-style and an electric sunshade.

Powertrains and Performance

Standard power comes from a 3.5-liter V6 rated at 200 horsepower and 220 pound-feet of torque. A four-speed automatic transmission is also standard. GT models include a shift-it-yourself feature that offers full manual control of gear changes.


The G6 features standard four-wheel disc brakes. Antilock brakes and traction control are standard on the GT, and optional on the base car. Side curtain airbags are optional across the board, but a stability control system is not available. The G6 has not yet been crash tested.

Interior Design and Special Features

The interior of the G6 features stylish seating with generous side bolsters to hold you in place during aggressive cornering. The gauges showcase Pontiac's signature font, and are set in an attractive cluster with chrome rings. Plenty of chrome and metal-look accents brighten up the interior. Overall materials quality is notably good, but a few cheap bits here and there keep the G6 a step below the class standards.

Driving Impressions

The 3.5-liter V6 offers plenty of torque down low for easy passing and merging, but can get a bit thrashy at high revs. The suspension returns a surprisingly sporty ride, and the solid structure helps make the interior a serene place to spend time.

What Others Are Saying

Customer Reviews

2005 g6 gt 3.5

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Vehicle: 2005 Pontiac G6 GT 4dr Sedan (3.5L 6cyl 4A)

This was the first new car I ever own. I had all the bells and whistles. I drove this car mainly on interstate twice a month to and from work 120 miles each way. In 8 years I put 63,000 on the car 90% interstate. Feul milage averaged 31mpg. It had plenty of power pulling mountains. Car was not good in snow if roads wheren't plowed good. Only issue where tires. Went threw multiple sets on rear until I found a good rubber combination. Had issues one time with sunroof leak that dealer fixed without issue. Only replaced brakes once at 50,000. Very good power to pull into traffic at interstate speed. Had radio info center repalced under warranty once.

1 of 1 people found this review helpful

Had this for 3 years

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Vehicle: 2005 Pontiac G6 4dr Sedan (3.5L 6cyl 4A)

My G6 2005 has 120,000 miles on it. Up til now I have only had to replace the tire, brakes, and battery. All of these things are due to be changed at its age. Tomorrow I am replacing a tie rod and a Control arm, both considered to be a wearable item. Given its mileage I think that there replacement is a no issue. I have no complaints other than the featureless radio and built in Info center. At 120, 000 miles my car still drives, looks, feels like new. I have a future plan to change out the stereo and say good by to the info display. I have in the past changed the transmission fluid, and I will do a spark plug and belt change all thing due at 100,000.

3 of 5 people found this review helpful


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Vehicle: 2005 Pontiac G6 GT 4dr Sedan (3.5L 6cyl 4A)

bought this car almost 2yrs ago and have had nothing but trouble. number one it WONT drive through snow, 2 ive replaced the brakes twice, the air conditioning quit working, the tires though brand new wont hold air, the whole brake systems keeps locking up and has been put through diagnostics at two different shops and cannot find whats wrong, the panoramic sun roof leaks and is factory, the sun roofs drain drains in the drivers side floor, the doors leak,there is an oxygen sensor that we cant find that is bad, the flat piece with the speakers on it in the back window rattles, the 6 disc skips cd's, and finally the roof supports that frame the windows are huge and create massive blind spots!!

1 of 1 people found this review helpful

2005 g6 gt= too problematic

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Vehicle: 2005 Pontiac G6 GT 4dr Sedan (3.5L 6cyl 4A)

Purchased this car new. 80- 90% of mileage is highway milage. (32 miles to and from work) I had all required maintenance performed and never drove aggressively. 10,800 miles BRAKES....???/ front and rear, and speedometer issue 18,000 new battery..??? 1 yr later 37,000 BRAKES/ front and rear, Other/ lower intake gasket replaced All previous repairs were just inconvient. Warranty covered most of this. The following are all out-pocket 42,000 BRAKES (5000 miles later!!!) / front only 71,000 Front End / control arms LS & RS 75,00 Differentials seals replaced 78,000 Transmission / Gears blew through case Rebuild Req 88,000 BRAKES Again

Love my baby!

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Vehicle: 2005 Pontiac G6 GT 4dr Sedan (3.5L 6cyl 4A)

I bought my G6 in March and have put 3k on it so far. I bought it with 94k, and only had one owner who replaced pretty much everything that goes out at that high of mileage. I've had zero problems since I've bought it except my windshield cracked and I had to replace it. It's got all the features, 3.6L V6 engine, monsoon stereo, 6 CD changer, fog lights, power pedals, chrome wheels, etc. Definitely a head turner. It's a very sporty fun car for a daily commute. It's my first nice car I've ever owned and I'd definitely recommend for someone who is looking for a nice, cheap, sporty car.

1 of 1 people found this review helpful

The first 5 years were

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Vehicle: 2005 Pontiac G6 GT 4dr Sedan (3.5L 6cyl 4A)

I have had my 2005 Pontiac G6 GT for more than 5 years now and while I loved the car at first, the last year has been less than ideal. Once the odometer passed 80,000 miles, several expensive repairs popped up, and the future doesn't look bright. Searching the web reveals that I am far from alone with these problems; and GM's recent history from the bailout to Pontiac's untimely demise makes it all the more frustrating. While it's a nice looking car, and fairly fun to drive, the reliability seems like it will be a serious issue as the car ages, and there are safer, better performing, and more reliable options from the Germans and Japanese...

Talk About The 2005 G6

2005 Pontiac G6 Discussions See all Started By

Hi I lease a Pontiac G6 2005 with 5200 miles on was brand new when I leased it back in Sept 05, jan 06 the ABS module got way to hot melted and caught on fire, apprently for no reason at all, I though...

PONTIAC / G6 2005-2006...

The G6, 2005 Altima, and 2004 Mazda 6 are fine cars. The G6 has only gotten poor reviews from Edmunds' frequent anti GM posters....

Gas Mileage


  • 20
  • cty
  • 29
  • highway
Calculate Yearly Fuel Costs
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