1977 BMW 728 vs. 1987 Ford Sierra
To start off, 1987 Ford Sierra is newer by 10 year(s). Which means there will be less support and parts availability for 1977 BMW 728. In addition, the cost of maintenance, including insurance, on 1977 BMW 728 would be higher. At 2,788 cc (6 cylinders), 1977 BMW 728 is equipped with a bigger engine. In terms of performance, 1987 Ford Sierra (224 HP @ 6000 RPM) has 54 more horse power than 1977 BMW 728. (170 HP @ 6000 RPM) In normal driving conditions, 1987 Ford Sierra should accelerate faster than 1977 BMW 728. With that said, vehicle weight also plays an important factor in acceleration. 1977 BMW 728 weights approximately 329 kg more than 1987 Ford Sierra.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1987 Ford Sierra (285 Nm @ 4500 RPM) has 50 more torque (in Nm) than 1977 BMW 728. (235 Nm @ 3700 RPM). This means 1987 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1977 BMW 728.
Compare all specifications:
| 1977 BMW 728 | 1987 Ford Sierra | |
| Make | BMW | Ford |
| Model | 728 | Sierra |
| Year Released | 1977 | 1987 |
| Engine Position | Front | Front |
| Engine Size | 2788 cc | 1993 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 170 HP | 224 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 235 Nm | 285 Nm |
| Torque RPM | 3700 RPM | 4500 RPM |
| Engine Bore Size | 86 mm | 90.8 mm |
| Engine Stroke Size | 80 mm | 77 mm |
| Engine Compression Ratio | 9.0:1 | 8.0:1 |
| Top Speed | 193 km/hour | 248 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1536 kg | 1207 kg |
| Vehicle Length | 4870 mm | 4430 mm |
| Vehicle Width | 1810 mm | 1730 mm |
| Vehicle Height | 1440 mm | 1430 mm |
| Wheelbase Size | 2800 mm | 2540 mm |
