1991 Ford Sierra vs. 2011 BMW X3
To start off, 2011 BMW X3 is newer by 20 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 3,000 cc (6 cylinders), 2011 BMW X3 is equipped with a bigger engine. In terms of performance, 2011 BMW X3 (240 HP @ 6600 RPM) has 165 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 2011 BMW X3 should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW X3 weights approximately 720 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, 2011 BMW X3 (299 Nm @ 2750 RPM) has 147 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2011 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 2011 BMW X3 | |
| Make | Ford | BMW |
| Model | Sierra | X3 |
| Year Released | 1991 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 3000 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 240 HP |
| Engine RPM | 4500 RPM | 6600 RPM |
| Torque | 152 Nm | 299 Nm |
| Torque RPM | 2200 RPM | 2750 RPM |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1145 kg | 1865 kg |
| Vehicle Length | 4430 mm | 4648 mm |
| Vehicle Width | 1700 mm | 1882 mm |
| Vehicle Height | 1370 mm | 1661 mm |
| Wheelbase Size | 2620 mm | 2807 mm |
| Fuel Tank Capacity | 60 L | 67 L |
