1991 Ford Sierra vs. 2003 Vauxhall Signum
To start off, 2003 Vauxhall Signum is newer by 12 year(s). Which means there will be less support and parts availability for 1991 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1991 Ford Sierra would be higher. At 1,997 cc (4 cylinders), 2003 Vauxhall Signum is equipped with a bigger engine. In terms of performance, 2003 Vauxhall Signum (173 HP @ 5500 RPM) has 98 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 2003 Vauxhall Signum should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Vauxhall Signum weights approximately 270 kg more than 1991 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2003 Vauxhall Signum (265 Nm @ 2500 RPM) has 113 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2003 Vauxhall Signum will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 2003 Vauxhall Signum | |
| Make | Ford | Vauxhall |
| Model | Sierra | Signum |
| Year Released | 1991 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 1997 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 173 HP |
| Engine RPM | 4500 RPM | 5500 RPM |
| Torque | 152 Nm | 265 Nm |
| Torque RPM | 2200 RPM | 2500 RPM |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1145 kg | 1415 kg |
| Vehicle Length | 4430 mm | 4640 mm |
| Vehicle Width | 1700 mm | 1800 mm |
| Vehicle Height | 1370 mm | 1470 mm |
| Wheelbase Size | 2620 mm | 2840 mm |
