1991 Audi 100 vs. 2005 Opel Signum
To start off, 2005 Opel Signum is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Audi 100. In addition, the cost of maintenance, including insurance, on 1991 Audi 100 would be higher. At 2,958 cc (6 cylinders), 2005 Opel Signum is equipped with a bigger engine. In terms of performance, 2005 Opel Signum (175 HP @ 4000 RPM) has 3 more horse power than 1991 Audi 100. (172 HP @ 5500 RPM) In normal driving conditions, 2005 Opel Signum should accelerate faster than 1991 Audi 100. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Signum weights approximately 164 kg more than 1991 Audi 100. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Opel Signum (370 Nm @ 1900 RPM) has 120 more torque (in Nm) than 1991 Audi 100. (250 Nm @ 3000 RPM). This means 2005 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi 100.
Compare all specifications:
| 1991 Audi 100 | 2005 Opel Signum | |
| Make | Audi | Opel |
| Model | 100 | Signum |
| Year Released | 1991 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 2771 cc | 2958 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 172 HP | 175 HP |
| Engine RPM | 5500 RPM | 4000 RPM |
| Torque | 250 Nm | 370 Nm |
| Torque RPM | 3000 RPM | 1900 RPM |
| Engine Bore Size | 82.5 mm | 87.5 mm |
| Engine Stroke Size | 86.4 mm | 82 mm |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1506 kg | 1670 kg |
| Vehicle Length | 4800 mm | 4640 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1450 mm | 1470 mm |
