1971 BMW Touring vs. 1987 Ford Sierra
To start off, 1987 Ford Sierra is newer by 16 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 1,991 cc (4 cylinders), 1987 Ford Sierra is equipped with a bigger engine. In terms of performance, 1987 Ford Sierra (104 HP @ 5200 RPM) has 19 more horse power than 1971 BMW Touring. (85 HP @ 5700 RPM) In normal driving conditions, 1987 Ford Sierra should accelerate faster than 1971 BMW Touring. With that said, vehicle weight also plays an important factor in acceleration. 1987 Ford Sierra weights approximately 25 kg more than 1971 BMW Touring. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1987 Ford Sierra (160 Nm @ 4000 RPM) has 30 more torque (in Nm) than 1971 BMW Touring. (130 Nm @ 3500 RPM). This means 1987 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1971 BMW Touring.
Compare all specifications:
| 1971 BMW Touring | 1987 Ford Sierra | |
| Make | BMW | Ford |
| Model | Touring | Sierra |
| Year Released | 1971 | 1987 |
| Engine Position | Front | Front |
| Engine Size | 1573 cc | 1991 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 85 HP | 104 HP |
| Engine RPM | 5700 RPM | 5200 RPM |
| Torque | 130 Nm | 160 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84.1 mm | 90.8 mm |
| Engine Stroke Size | 71 mm | 77 mm |
| Engine Compression Ratio | 8.6:1 | 9.2:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1030 kg | 1055 kg |
| Vehicle Length | 4120 mm | 4500 mm |
| Vehicle Width | 1600 mm | 1680 mm |
| Vehicle Height | 1390 mm | 1400 mm |
| Wheelbase Size | 2510 mm | 2620 mm |
