2000 Audi A8 vs. 1991 Ford Sierra
To start off, 2000 Audi A8 is newer by 9 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 4,172 cc (8 cylinders), 2000 Audi A8 is equipped with a bigger engine. In terms of performance, 2000 Audi A8 (330 HP @ 6200 RPM) has 255 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM). In normal driving conditions, 2000 Audi A8 should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2000 Audi A8 weights approximately 670 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, 2000 Audi A8 (431 Nm @ 3000 RPM) has 279 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2000 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 2000 Audi A8 | 1991 Ford Sierra | |
| Make | Audi | Ford |
| Model | A8 | Sierra |
| Year Released | 2000 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 1751 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 330 HP | 75 HP |
| Engine RPM | 6200 RPM | 4500 RPM |
| Torque | 431 Nm | 152 Nm |
| Torque RPM | 3000 RPM | 2200 RPM |
| Engine Bore Size | 84.5 mm | 82.5 mm |
| Engine Stroke Size | 93 mm | 82 mm |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1815 kg | 1145 kg |
| Vehicle Length | 5190 mm | 4430 mm |
| Vehicle Width | 1900 mm | 1700 mm |
| Vehicle Height | 1460 mm | 1370 mm |
| Wheelbase Size | 3020 mm | 2620 mm |
| Fuel Tank Capacity | 90 L | 60 L |
