1991 Ford Sierra vs. 2007 Jaguar XK8
To start off, 2007 Jaguar XK8 is newer by 16 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 4,196 cc (8 cylinders), 2007 Jaguar XK8 is equipped with a bigger engine. In terms of performance, 2007 Jaguar XK8 (294 HP @ 6000 RPM) has 219 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 2007 Jaguar XK8 should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Jaguar XK8 weights approximately 700 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, 2007 Jaguar XK8 (412 Nm @ 4000 RPM) has 260 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2007 Jaguar XK8 will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 2007 Jaguar XK8 | |
| Make | Ford | Jaguar |
| Model | Sierra | XK8 |
| Year Released | 1991 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 4196 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 75 HP | 294 HP |
| Engine RPM | 4500 RPM | 6000 RPM |
| Torque | 152 Nm | 412 Nm |
| Torque RPM | 2200 RPM | 4000 RPM |
| Engine Bore Size | 82.5 mm | 86 mm |
| Engine Stroke Size | 82 mm | 90.3 mm |
| Fuel Type | Diesel | Gasoline - Premium |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1145 kg | 1845 kg |
| Vehicle Length | 4430 mm | 4770 mm |
| Vehicle Width | 1700 mm | 2020 mm |
| Vehicle Height | 1370 mm | 1310 mm |
| Wheelbase Size | 2620 mm | 2590 mm |
| Fuel Tank Capacity | 60 L | 75 L |
