1971 BMW Touring vs. 1984 Ford Sierra
To start off, 1984 Ford Sierra is newer by 13 year(s). Which means there will be less support and parts availability for 1971 BMW Touring. In addition, the cost of maintenance, including insurance, on 1971 BMW Touring would be higher. At 1,593 cc (4 cylinders), 1984 Ford Sierra is equipped with a bigger engine. In terms of performance, 1971 BMW Touring (85 HP @ 5700 RPM) has 10 more horse power than 1984 Ford Sierra. (75 HP @ 4800 RPM). In normal driving conditions, 1971 BMW Touring should accelerate faster than 1984 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1984 Ford Sierra weights approximately 10 kg more than 1971 BMW Touring.
Let's talk about torque, 1971 BMW Touring (130 Nm @ 3500 RPM) has 7 more torque (in Nm) than 1984 Ford Sierra. (123 Nm @ 2900 RPM). This means 1971 BMW Touring will have an easier job in driving up hills or pulling heavy equipment than 1984 Ford Sierra.
Compare all specifications:
| 1971 BMW Touring | 1984 Ford Sierra | |
| Make | BMW | Ford |
| Model | Touring | Sierra |
| Year Released | 1971 | 1984 |
| Engine Position | Front | Front |
| Engine Size | 1573 cc | 1593 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 85 HP | 75 HP |
| Engine RPM | 5700 RPM | 4800 RPM |
| Torque | 130 Nm | 123 Nm |
| Torque RPM | 3500 RPM | 2900 RPM |
| Engine Bore Size | 84.1 mm | 87.7 mm |
| Engine Stroke Size | 71 mm | 66 mm |
| Engine Compression Ratio | 8.6:1 | 9.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1030 kg | 1040 kg |
| Vehicle Length | 4120 mm | 4430 mm |
| Vehicle Width | 1600 mm | 1730 mm |
| Vehicle Height | 1390 mm | 1370 mm |
| Wheelbase Size | 2510 mm | 2610 mm |
