1991 Ford Sierra vs. 2013 Porsche 911
To start off, 2013 Porsche 911 is newer by 22 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 3,800 cc (6 cylinders), 2013 Porsche 911 is equipped with a bigger engine. In terms of performance, 2013 Porsche 911 (395 HP @ 7400 RPM) has 320 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 2013 Porsche 911 should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2013 Porsche 911 weights approximately 250 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, 2013 Porsche 911 (441 Nm @ 5600 RPM) has 289 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2013 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 | 2013 Porsche 911 | |
| Make | Ford | Porsche |
| Model | Sierra | 911 |
| Year Released | 1991 | 2013 |
| Engine Position | Front | Rear |
| Engine Size | 1751 cc | 3800 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 395 HP |
| Engine RPM | 4500 RPM | 7400 RPM |
| Torque | 152 Nm | 441 Nm |
| Torque RPM | 2200 RPM | 5600 RPM |
| Engine Bore Size | 82.5 mm | 102 mm |
| Engine Stroke Size | 82 mm | 77 mm |
| Engine Compression Ratio | 21.5:1 | 12.5 : 1 |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1145 kg | 1395 kg |
| Vehicle Length | 4430 mm | 4491 mm |
| Vehicle Width | 1700 mm | 1978 mm |
| Vehicle Height | 1370 mm | 1295 mm |
| Wheelbase Size | 2620 mm | 2450 mm |
