1987 Buick Regal vs. 2004 Opel Signum
To start off, 2004 Opel Signum is newer by 17 year(s). Which means there will be less support and parts availability for 1987 Buick Regal. In addition, the cost of maintenance, including insurance, on 1987 Buick Regal would be higher. At 2,843 cc (6 cylinders), 1987 Buick Regal is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (173 HP @ 5500 RPM) has 38 more horse power than 1987 Buick Regal. (135 HP @ 4400 RPM) In normal driving conditions, 2004 Opel Signum should accelerate faster than 1987 Buick Regal. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 220 kg more than 1987 Buick Regal. 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, 2004 Opel Signum (265 Nm @ 2500 RPM) has 21 more torque (in Nm) than 1987 Buick Regal. (244 Nm @ 3600 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1987 Buick Regal. 1987 Buick Regal has automatic transmission and 2004 Opel Signum has manual transmission. 2004 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1987 Buick Regal will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1987 Buick Regal | 2004 Opel Signum | |
| Make | Buick | Opel |
| Model | Regal | Signum |
| Year Released | 1987 | 2004 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2843 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 135 HP | 173 HP |
| Engine RPM | 4400 RPM | 5500 RPM |
| Torque | 244 Nm | 265 Nm |
| Torque RPM | 3600 RPM | 2500 RPM |
| Engine Compression Ratio | 8.8:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 190 km/hour | 220 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1340 kg | 1560 kg |
| Vehicle Length | 4890 mm | 4640 mm |
| Vehicle Width | 1850 mm | 1800 mm |
| Vehicle Height | 1350 mm | 1470 mm |
| Wheelbase Size | 2740 mm | 2840 mm |
| Fuel Tank Capacity | 62 L | 60 L |
