2005 Pontiac Bonneville Overview


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Pontiac Bonneville Experts

#1 dandyoun
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Average User Score

4.95 stars

Based on 11 reviews

Another Great Orphan Bites The Dust. by donhank
 — Pontiac has been a favorite of mine since owning my Firebird TransAms. This car has great handling, great traction, decent brakes and nice performancce. The cladding gave the car perfect looks. A gre... Read More
Hey I Give It 10 Out Of 10 by ruzzinator
 — 11/20/10 = Just found my 2005 Bonneville GXP, white tricoat with 18,000 miles. What a find. Have only driven a few hundred miles but I love it. A real head turner. Love the Northstar smooth power deli... Read More
Absolutely The Best Car I've Ever Rode In! by Jeremy
 — Hugs the road like a Cheetah chasing a Gazelle, I absolutely love the instrument panel, reminds of a small plane's cockpit. Everything is accessible from the driver's seat. Makes driving more enjoyabl... Read More

2005 Pontiac Bonneville Overview

Overall User Score

4.9 out of 5 stars4.9 out of 5 stars4.9 out of 5 stars4.9 out of 5 stars4.9 out of 5 stars4.95

Based on 11 reviews

2005 Pontiac Bonneville

After 47 years on the market, the Pontiac Bonneville hears the fat lady sing in 2005.  Starting life as Pontiac's sporty full-size coupe and convertible in the 1950s and evolving into the boat-size sedan and station wagon of the 1970s, it had reconnected in its last years with its full-size performance sedan roots.  But lack of marketing and poor consumer buying response has prompted Pontiac to pull the Bonny and replace it with the Grand Prix GXP in 2006.
As such, few changes were made to the 2005 Pontiac Bonneville.  OnStar became standard across the SE, SLE, and GXP trims, and the SLE borrowed some exterior styling from the GXP in terms of its fascias, lights, and body moldings.  The SE and SLE models featured a 3.8-liter, 205-hp V6, while the racier GXP housed a 4.6-liter, 275-hp V8.  All came standard with 4-speed auto tran, dual front airbags, and ABS brakes.  Traction control was standard on SLE and GXP trims, and side airbags were standard on the GXP and optional for the others.  Though the GXP was tricked out with top-of-the line features, including an independent sports suspension, the SE was a great value.  The V6 performed well, and it came with many standard features.  
The 2005 Bonneville was a good compromise for drivers wanting the practicality of space, but the fun of a performance engine and the luxurious comfort of pricier imports.  It has always been known for roominess, and though the current batch of Bonnies sacrifice some rear head and legroom for its sportier styling, it still seats four comfortably and offers a spacious trunk.  
Drivers love the Bonneville's speed, handling, good cornering, and smooth comfortable ride.  They say it makes a great cruising car, comfortable for long trips.  They also love the exhaust rumble in the GXP.  Acceleration is instant and confident on the highway.  Downsides include the cramped backseat, lack of manual transmission option to really enjoy the V8, an overdone and complicated instrument panel, cheap plastic parts that break, and no fold-down seat option.  Some mention noticeable brake squeal and the poor depreciation value of the Bonneville.


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Pontiac Bonneville Questions


Where Can I Get Step By Step Instructions For Replacing The Blower Motor On...

18 views with 1 answer (last answer 2 months ago)

Upper Radiator Hose Collapsing

I changed the thermostat, gasket, both radiator hoses and flushed the radiator but the upper hose collapses when the car is cooled down....It fills up when motor is running and does not over heat

8,559 views with 20 answers (last answer 3 months ago)

My 205 Pontiac Bonneville Sle Has 225/35r17 Tires On It. Can I Use 215/55r...

I can get a good deal on studded winter tires but they are 215/55R17 and my car has 235/55R17 tires on it now.

9 views with 1 answer (last answer 3 months ago)
Sarah Casperson

Performance Parts And Accessories

Anyone know where I can find any performance parts or accessories possibly headlights for my 05 Pontiac Bonneville GXP?

145 views with 5 answers (last answer 8 months ago)
Wesley Smith

My 2005 Pontiac Bonneville Is Overheating.i Can't Even Find The Valve On Th...

SLE/ hose from radiator has alot of give while overheating.

316 views with 4 answers (last answer 9 months ago)