1980 BMW 628 vs. 1991 Ford Sierra
To start off, 1991 Ford Sierra is newer by 11 year(s). Which means there will be less support and parts availability for 1980 BMW 628. In addition, the cost of maintenance, including insurance, on 1980 BMW 628 would be higher. At 2,786 cc (6 cylinders), 1980 BMW 628 is equipped with a bigger engine. In terms of performance, 1980 BMW 628 (181 HP @ 5800 RPM) has 106 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM). In normal driving conditions, 1980 BMW 628 should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1980 BMW 628 weights approximately 315 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, 1980 BMW 628 (240 Nm @ 4200 RPM) has 88 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 1980 BMW 628 will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1980 BMW 628 | 1991 Ford Sierra | |
| Make | BMW | Ford |
| Model | 628 | Sierra |
| Year Released | 1980 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 2786 cc | 1751 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 181 HP | 75 HP |
| Engine RPM | 5800 RPM | 4500 RPM |
| Torque | 240 Nm | 152 Nm |
| Torque RPM | 4200 RPM | 2200 RPM |
| Engine Bore Size | 86 mm | 82.5 mm |
| Engine Stroke Size | 80 mm | 82 mm |
| Engine Compression Ratio | 9.3:1 | 21.5:1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1460 kg | 1145 kg |
| Vehicle Length | 4760 mm | 4430 mm |
| Vehicle Width | 1730 mm | 1700 mm |
| Vehicle Height | 1370 mm | 1370 mm |
| Wheelbase Size | 2640 mm | 2620 mm |
| Fuel Tank Capacity | 70 L | 60 L |
