1991 Ford Sierra vs. 1968 Jaguar XJ-13
To start off, 1991 Ford Sierra is newer by 23 year(s). Which means there will be less support and parts availability for 1968 Jaguar XJ-13. In addition, the cost of maintenance, including insurance, on 1968 Jaguar XJ-13 would be higher. At 4,990 cc (12 cylinders), 1968 Jaguar XJ-13 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 1991 Ford Sierra weights approximately 20 kg more than 1968 Jaguar XJ-13.
Let's talk about torque, 1968 Jaguar XJ-13 (570 Nm @ 6300 RPM) has 418 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 1968 Jaguar XJ-13 will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 1968 Jaguar XJ-13 | |
| Make | Ford | Jaguar |
| Model | Sierra | XJ-13 |
| Year Released | 1991 | 1968 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 4990 cc |
| Engine Cylinders | 4 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Horse Power | 75 HP | 0 HP |
| Torque | 152 Nm | 570 Nm |
| Torque RPM | 2200 RPM | 6300 RPM |
| Fuel Type | Diesel | Gasoline |
| Vehicle Weight | 1145 kg | 1125 kg |
| Vehicle Length | 4430 mm | 4840 mm |
| Vehicle Width | 1700 mm | 1780 mm |
| Vehicle Height | 1370 mm | 1000 mm |
