1987 Ford Sierra vs. 1981 Porsche 911
To start off, 1987 Ford Sierra is newer by 6 year(s). Which means there will be less support and parts availability for 1981 Porsche 911. In addition, the cost of maintenance, including insurance, on 1981 Porsche 911 would be higher. At 3,164 cc (6 cylinders), 1981 Porsche 911 is equipped with a bigger engine. In terms of performance, 1981 Porsche 911 (232 HP @ 5900 RPM) has 119 more horse power than 1987 Ford Sierra. (113 HP @ 5300 RPM) In normal driving conditions, 1981 Porsche 911 should accelerate faster than 1987 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1981 Porsche 911 weights approximately 170 kg more than 1987 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, 1981 Porsche 911 (284 Nm @ 4800 RPM) has 104 more torque (in Nm) than 1987 Ford Sierra. (180 Nm @ 3000 RPM). This means 1981 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1987 Ford Sierra.
Compare all specifications:
| 1987 Ford Sierra | 1981 Porsche 911 | |
| Make | Ford | Porsche |
| Model | Sierra | 911 |
| Year Released | 1987 | 1981 |
| Engine Position | Front | Rear |
| Engine Size | 2294 cc | 3164 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 113 HP | 232 HP |
| Engine RPM | 5300 RPM | 5900 RPM |
| Torque | 180 Nm | 284 Nm |
| Torque RPM | 3000 RPM | 4800 RPM |
| Engine Bore Size | 96 mm | 95 mm |
| Engine Stroke Size | 79.5 mm | 74.4 mm |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1090 kg | 1260 kg |
| Vehicle Length | 4400 mm | 4300 mm |
| Vehicle Width | 1680 mm | 1660 mm |
| Vehicle Height | 1370 mm | 1330 mm |
| Wheelbase Size | 2620 mm | 2270 mm |
| Fuel Tank Capacity | 45 L | 80 L |
