2007 Pontiac Grand Prix vs. 1991 Porsche 928
To start off, 2007 Pontiac Grand Prix is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Porsche 928. In addition, the cost of maintenance, including insurance, on 1991 Porsche 928 would be higher. At 5,397 cc (8 cylinders), 1991 Porsche 928 is equipped with a bigger engine. In terms of performance, 1991 Porsche 928 (345 HP) has 145 more horse power than 2007 Pontiac Grand Prix. (200 HP) In normal driving conditions, 1991 Porsche 928 should accelerate faster than 2007 Pontiac Grand Prix. With that said, vehicle weight also plays an important factor in acceleration. 1991 Porsche 928 weights approximately 244 kg more than 2007 Pontiac Grand Prix. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1991 Porsche 928 (500 Nm @ 4250 RPM) has 188 more torque (in Nm) than 2007 Pontiac Grand Prix. (312 Nm @ 4000 RPM). This means 1991 Porsche 928 will have an easier job in driving up hills or pulling heavy equipment than 2007 Pontiac Grand Prix. 2007 Pontiac Grand Prix has automatic transmission and 1991 Porsche 928 has manual transmission. 1991 Porsche 928 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Pontiac Grand Prix will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Pontiac Grand Prix | 1991 Porsche 928 | |
| Make | Pontiac | Porsche |
| Model | Grand Prix | 928 |
| Year Released | 2007 | 1991 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3786 cc | 5397 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 200 HP | 345 HP |
| Torque | 312 Nm | 500 Nm |
| Torque RPM | 4000 RPM | 4250 RPM |
| Engine Bore Size | 97 mm | 100.1 mm |
| Engine Stroke Size | 86 mm | 85.9 mm |
| Engine Compression Ratio | 9.4:1 | 10.4:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1356 kg | 1600 kg |
| Vehicle Length | 5040 mm | 4450 mm |
| Vehicle Width | 1830 mm | 1860 mm |
| Vehicle Height | 1430 mm | 1290 mm |
| Wheelbase Size | 2810 mm | 2510 mm |
| Fuel Tank Capacity | 64 L | 86 L |
