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 3,164 cc (6 cylinders), 1998 Porsche 911 is equipped with a bigger engine. In terms of performance, 1998 Porsche 911 (537 HP @ 7000 RPM) has 462 more horse power than 1991 Ford Sierra. (75 HP @ 4500 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 5 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, 1998 Porsche 911 (600 Nm @ 4250 RPM) has 448 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 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 | Middle |
| Engine Size | 1751 cc | 3164 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 75 HP | 537 HP |
| Engine RPM | 4500 RPM | 7000 RPM |
| Torque | 152 Nm | 600 Nm |
| Torque RPM | 2200 RPM | 4250 RPM |
| Engine Bore Size | 82.5 mm | 95 mm |
| Engine Stroke Size | 82 mm | 74.4 mm |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1145 kg | 1150 kg |
| Vehicle Length | 4430 mm | 4720 mm |
| Vehicle Width | 1700 mm | 1990 mm |
| Vehicle Height | 1370 mm | 1180 mm |
| Wheelbase Size | 2620 mm | 2280 mm |
| Fuel Tank Capacity | 60 L | 100 L |
