1991 Ford Sierra vs. 1998 Porsche 911
To start off, 1998 Porsche 911 is newer by 7 year(s). Which means there will be less support and parts availability for 1991 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1991 Ford Sierra would be higher. At 3,600 cc (6 cylinders), 1998 Porsche 911 is equipped with a bigger engine. In terms of performance, 1998 Porsche 911 (443 HP @ 6000 RPM) has 369 more horse power than 1991 Ford Sierra. (74 HP @ 4900 RPM) In normal driving conditions, 1998 Porsche 911 should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1998 Porsche 911 weights approximately 441 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.
Because 1998 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Ford Sierra. In wet, icy, snow, or gravel driving conditions, 1998 Porsche 911 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, 1998 Porsche 911 (583 Nm @ 4500 RPM) has 460 more torque (in Nm) than 1991 Ford Sierra. (123 Nm @ 2900 RPM). This means 1998 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 1998 Porsche 911 | |
| Make | Ford | Porsche |
| Model | Sierra | 911 |
| Year Released | 1991 | 1998 |
| Engine Position | Front | Rear |
| Engine Size | 1597 cc | 3600 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 74 HP | 443 HP |
| Engine RPM | 4900 RPM | 6000 RPM |
| Torque | 123 Nm | 583 Nm |
| Torque RPM | 2900 RPM | 4500 RPM |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1015 kg | 1456 kg |
| Vehicle Length | 4430 mm | 4270 mm |
| Vehicle Width | 1700 mm | 1800 mm |
| Vehicle Height | 1370 mm | 1270 mm |
| Wheelbase Size | 2620 mm | 2280 mm |
