1975 Saab 99 vs. 2001 Opel Signum
To start off, 2001 Opel Signum is newer by 26 year(s). Which means there will be less support and parts availability for 1975 Saab 99. In addition, the cost of maintenance, including insurance, on 1975 Saab 99 would be higher. At 2,958 cc (6 cylinders), 2001 Opel Signum is equipped with a bigger engine. In terms of performance, 2001 Opel Signum (175 HP @ 4000 RPM) has 80 more horse power than 1975 Saab 99. (95 HP @ 5200 RPM) In normal driving conditions, 2001 Opel Signum should accelerate faster than 1975 Saab 99. With that said, vehicle weight also plays an important factor in acceleration. 2001 Opel Signum weights approximately 525 kg more than 1975 Saab 99. 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, 2001 Opel Signum (370 Nm @ 1900 RPM) has 208 more torque (in Nm) than 1975 Saab 99. (162 Nm @ 3500 RPM). This means 2001 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1975 Saab 99.
Compare all specifications:
| 1975 Saab 99 | 2001 Opel Signum | |
| Make | Saab | Opel |
| Model | 99 | Signum |
| Year Released | 1975 | 2001 |
| Engine Position | Front | Front |
| Engine Size | 1985 cc | 2958 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 95 HP | 175 HP |
| Engine RPM | 5200 RPM | 4000 RPM |
| Torque | 162 Nm | 370 Nm |
| Torque RPM | 3500 RPM | 1900 RPM |
| Engine Bore Size | 90 mm | 87.5 mm |
| Engine Stroke Size | 78 mm | 82 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1145 kg | 1670 kg |
| Vehicle Length | 4540 mm | 4640 mm |
| Vehicle Width | 1700 mm | 1800 mm |
| Vehicle Height | 1440 mm | 1470 mm |
| Wheelbase Size | 2480 mm | 2710 mm |
