1988 BMW 730 vs. 1986 Ford Sierra
To start off, 1988 BMW 730 is newer by 2 year(s). Which means there will be less support and parts availability for 1986 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1986 Ford Sierra would be higher. At 2,984 cc (6 cylinders), 1988 BMW 730 is equipped with a bigger engine. In terms of performance, 1988 BMW 730 (185 HP @ 5800 RPM) has 25 more horse power than 1986 Ford Sierra. (160 HP @ 5700 RPM). In normal driving conditions, 1988 BMW 730 should accelerate faster than 1986 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1988 BMW 730 weights approximately 334 kg more than 1986 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1986 Ford Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1988 BMW 730. In wet, icy, snow, or gravel driving conditions, 1986 Ford Sierra will offer significantly more control. 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, 1988 BMW 730 (260 Nm @ 4000 RPM) has 44 more torque (in Nm) than 1986 Ford Sierra. (216 Nm @ 4300 RPM). This means 1988 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 1986 Ford Sierra.
Compare all specifications:
| 1988 BMW 730 | 1986 Ford Sierra | |
| Make | BMW | Ford |
| Model | 730 | Sierra |
| Year Released | 1988 | 1986 |
| Engine Position | Front | Front |
| Engine Size | 2984 cc | 2792 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 185 HP | 160 HP |
| Engine RPM | 5800 RPM | 5700 RPM |
| Torque | 260 Nm | 216 Nm |
| Torque RPM | 4000 RPM | 4300 RPM |
| Engine Bore Size | 89 mm | 93 mm |
| Engine Stroke Size | 80 mm | 68.5 mm |
| Engine Compression Ratio | 9.0:1 | 9.2:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1600 kg | 1266 kg |
| Vehicle Length | 4920 mm | 4430 mm |
| Vehicle Width | 1850 mm | 1730 mm |
| Wheelbase Size | 2840 mm | 2610 mm |
| Fuel Tank Capacity | 90 L | 116 L |
