1991 Ford Sierra vs. 2002 Jaguar XJ
To start off, 2002 Jaguar XJ is newer by 11 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 3,248 cc (8 cylinders), 2002 Jaguar XJ is equipped with a bigger engine. In terms of performance, 2002 Jaguar XJ (240 HP @ 6350 RPM) has 165 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 2002 Jaguar XJ should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2002 Jaguar XJ weights approximately 565 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, 2002 Jaguar XJ (316 Nm @ 4350 RPM) has 164 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2002 Jaguar XJ will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 2002 Jaguar XJ | |
| Make | Ford | Jaguar |
| Model | Sierra | XJ |
| Year Released | 1991 | 2002 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 3248 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 240 HP |
| Engine RPM | 4500 RPM | 6350 RPM |
| Torque | 152 Nm | 316 Nm |
| Torque RPM | 2200 RPM | 4350 RPM |
| Engine Bore Size | 82.5 mm | 86 mm |
| Engine Stroke Size | 82 mm | 70 mm |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1145 kg | 1710 kg |
| Vehicle Length | 4430 mm | 5160 mm |
| Vehicle Width | 1700 mm | 1800 mm |
| Vehicle Height | 1370 mm | 1310 mm |
| Wheelbase Size | 2620 mm | 2880 mm |
