Are you looking for the differences between GTP and GXP? Here in this guide, you will learn about the core differences between GTP vs GXP with their overview and comparison table.
Overview of the GXP Grand Prix
The strong performance of the GXP is its best feature. Although the sedan engine is not the most powerful or cultivated in its class, most testers appreciate its performance. Car and Driver write: “Some other sports sedans can match the acceleration values of this car, but none can match its enormous strength in close combat in the city.”
However, some noted problems with refinement. The New York Times says: “Go too hard on the gas (it doesn’t feel too hard), and the front tires will squeak like pigs under the fence. Then the traction control will start, and the engine will cut off. This makes the car will stop.
Acceleration and performance
The 3.8-litre V6 engine in the 2008 GXP produces 200 hp, while the 5.2-liter V8 engine in the GXP produces 303 hp. Although the V8 offers an optional manual mode, both versions have front-wheel drive and a four-speed automatic transmission.
The 2008 Pontiac Grand Prix GXP has 18 miles per gallon in the city and 28 miles on the highway when paired with a standard four-speed automatic transmission. The GXP gets 16 miles per gallon in the city and 25 on the highway.
Handling and braking
The handling of the Pontiac Grand Prix GXP has been met with mixed reviews, some were stunned by the car’s agility, but others were disappointed at the lack of stability.
The 2008 GXP appears taller than most of its competitors, which may be no big surprise considering that it is nearly four inches longer than the Toyota Camry. In his favour, however, the Grand Prix is still relatively tight and free for a front-wheel drive car.”
The New York Times reports: “When it comes to understeer, it goes a bit, and the GXP Grand Prix is around the corner.
The braking of the Pontiac GXP Grand Prix is sufficient. Car and Driver noted that “braking power — 50 yards from 70 mph and zero weakness — is on par in this class.” And the Consumer Guide notes that “the brakes on the test cars were insensitive and spongy, but held up well.”
Performance options
The 2008 GXP Pontiac Grand Prix offers an optional manual shift mode known as TAP shifting.
The system is easy to use, perhaps because it was “inspired by the design of Shimano’s gearshift levers on bicycles,” although some reviewers have complained that there are only four speeds. Other reviewers note that the system regulates drivers to some degree.
USA Today says: “The engine controller prevents overstepping if you forget to upshift or try to downshift if the car goes too fast to the desired gear.
GTP Overview
The GTP, appropriately named ‘Grand Touring Performance’, is the right car model if you’re looking for luxury on a budget. The GTP models have a supercharged, high-performance engine that produces tons of horsepower (260 hp), giving you great handling, speed and excellent mileage.
The simple view on the speed display allows you to control the speed when entering a speed limit area, saving you speeding fines. The GTP car model also has an oil life indicator, which can be a great relief.
Regardless of the heavy door, the GTP offers a very smooth operation. The GTP model uses Eaton’s fifth-generation compressors, which significantly increase performance.
Despite having a fantastic supercharged engine, the GTP uses a lot less gas and costs less money.
The Pontiac Grand Prix GTP’s 3.8-liter V6 engine produced 260 horsepower and 280 pound-feet of torque and had a top speed of 138 mph. One of the quickest Grand Prix cars to ever leave Detroit, the GTP boosts this astonishing top speed by a further 6.6 seconds from 0 to 60 mph.
The GTP Grand Prix only has a four-speed automatic transmission, yet despite this, it boasts smooth shifting and can be driven off the line with a lot of tenacity. The Pontiac GTP is one of the more contemporary muscle cars in the lineup due to its amazing 15-second quarter-mile clip.
Engine and power
A more potent 3.6-liter V6 engine with 252 horsepower at 6,300 rpm and 251 ft.-lb. Of torque at 3200 rpm was available in the 2007 Pontiac GTP coupe and sedan.
Power and distribution
The GTP 2007 travels at 6.2 MPH per second. The GTP offers a coupe and sedan in a six-speed automatic transmission.
Inside measurements and ease
The GTP coupe had four headrests, whilst the sedan’s interior had five. 39 inches long with the GTP roadster.
Specifications and design of the exterior
The Pontiac GTP’s equipment differed in dimensions, height, broad, and basic gravity. At 189 inches, the GTP coupe was a hair shorter. Compared to the 70.6-inch GT convertible, the GTP coupe was 56.4 inches tall and 70.4 inches wide.
Tabular Differences between GTP vs GXP
| GTP | GXP |
| GTP has 3.9 with 12 valves. | The GXP has a 3.6 with 24 valves. |
| GTP came with a 6.0 L76 v8 aluminium block, basically the bottom of LS2 with the top of LS3 and AFM. | The GXP came with the 6.2 LS3. |
| GTP 2009.5 also had a slightly updated ECM overhaul, wiring harness and usage but used the most previous ECM overhaul and silver throttle bodies. | The GXP had a slightly updated ECM overhaul, wiring harness and used gold leaf throttle bodies.. |
| GTP had 2.92 end units | GXP came with 3.73 (M6) or 3.27 (A6) end units |
| The GTP had FE2 suspension | The GXP had FE3 suspension |
| GTP has a 6.0l engine and has 361hp extra 100% | GXP 6.2L engine has an extra 80 HP (something like 435) |
| GTP has 240 horsepower | GXP has 303 horsepower at 5,600 rpm. |
| GTP stands for Grand Touring Performance | GXP stands for: “Grand eXperimental Prototype |
Frequently Asked Questions
What engine does GTP have?
The GTP Grand Prix is equipped with a 3.8-liter overhead valve engine with a 260-hp Eaton supercharger and 280 lb-ft of torque, surpassing the fast 240-hp Honda Accord and Nissan Altima. Besides pure numbers, it is the character that distinguishes the Grand Prix.
Is the Pontiac Grand Prix GTP fast?
The Pontiac Grand Prix GTP’s 3.8-liter V6 engine produced 260 hp and 280 pound-feet of torque and had a top speed of 138 mph. One of the quickest Grand Prix cars to ever leave Detroit, the GTP boosts this astonishing top speed by a further 6.6 seconds from 0 to 60 mph.
Which engine comes in GXP?
The GXP comes with a 5.3-liter V8 engine producing 303 horsepower. All models use a four-speed automatic transmission.
What is GXP Validation?
GXP is a set of quality guidelines and regulations designed to ensure that bio/pharmaceutical products are safe, meet their intended use and comply with quality processes during production, inspection, storage and distribution.
Is GXP Supercharged?
The GT sedan is equipped with a supercharged version that develops 260 hp. In the GXP sedan, the 5.3-liter V-8 generates 303 horsepower at 5,600 rpm and 323 lb-ft of torque at 4,400 rpm.
Conclusion
Many will tell you that GTP is cheap because modifications are cheap and can be made just as quickly as GXP with some fairly simple modes. The only reason to go for GXP is that you like v8 and not v6 sound. With GTP, you get a compressor howl, which can be just as great.
However, they are not very different. I like the GXP front bumper more just by the looks.
Expert Opinion
“The GTPs depreciate a litter better than the GXP at this point in time and many times can be bought very reasonably, new or used one closing point. If you decided on the V8, don’t exclude the Impala SS 2006 and up. It has the same motor, but a slightly different axle ratio than the GXP. Road tests claim that the SS is a tenth or 2 quicker stocks”.
References
- https://www.youtube.com/watch?v=vz9Xo-3shB8
- https://cars.usnews.com/cars-trucks/pontiac/grand-prix/performance
- https://en.wikipedia.org/wiki/Pontiac_Grand_Prix
I am an Automotive specialist. I graduated from Michigan with Bachelor in Automotive Engineering and Management. Also, I hold degrees in Electrical and Automation Engineering (BEng), Automatic and Industrial Electronic Engineering, and Automotive Technology. I have worked at General Motors Company for over five years as the Marketing Operations Production Coordinator. Now, I own my garage in Miami, Florida. I love cars and love to share everything about them with my readers. I am the founder of the Automotiveex blog, where I share everything about automotive, like car news, car mechanical issues, and anything else that comes up in my blog posts.
