2003 Opel Signum vs. 1988 Pontiac Grand Prix
To start off, 2003 Opel Signum is newer by 15 year(s). Which means there will be less support and parts availability for 1988 Pontiac Grand Prix. In addition, the cost of maintenance, including insurance, on 1988 Pontiac Grand Prix would be higher. At 3,173 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (208 HP @ 6200 RPM) has 3 more horse power than 1988 Pontiac Grand Prix. (205 HP @ 4800 RPM). In normal driving conditions, 2003 Opel Signum should accelerate faster than 1988 Pontiac Grand Prix. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 45 kg more than 1988 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 front wheel drive (FWD). Which offers better traction when its slippery than rear 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, 2003 Opel Signum (300 Nm @ 4000 RPM) has 2 more torque (in Nm) than 1988 Pontiac Grand Prix. (298 Nm @ 3200 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1988 Pontiac Grand Prix. 1988 Pontiac Grand Prix has automatic transmission and 2003 Opel Signum has manual transmission. 2003 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1988 Pontiac Grand Prix will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Opel Signum | 1988 Pontiac Grand Prix | |
| Make | Opel | Pontiac |
| Model | Signum | Grand Prix |
| Year Released | 2003 | 1988 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3173 cc | 3097 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 208 HP | 205 HP |
| Engine RPM | 6200 RPM | 4800 RPM |
| Torque | 300 Nm | 298 Nm |
| Torque RPM | 4000 RPM | 3200 RPM |
| Engine Bore Size | 87.5 mm | 89 mm |
| Engine Stroke Size | 88 mm | 84 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1610 kg | 1565 kg |
| Vehicle Length | 4640 mm | 4930 mm |
| Vehicle Width | 1800 mm | 1810 mm |
| Vehicle Height | 1470 mm | 1360 mm |
| Wheelbase Size | 2740 mm | 2740 mm |
| Fuel Tank Capacity | 52 L | 76 L |
