2005 Audi A4 vs. 1991 Ford Sierra
To start off, 2005 Audi A4 is newer by 14 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 2,983 cc (6 cylinders), 2005 Audi A4 is equipped with a bigger engine. In terms of performance, 2005 Audi A4 (223 HP @ 6500 RPM) has 148 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM). In normal driving conditions, 2005 Audi A4 should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 550 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, 2005 Audi A4 (300 Nm) has 148 more torque (in Nm) than 1991 Ford Sierra. (152 Nm). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 2005 Audi A4 | 1991 Ford Sierra | |
| Make | Audi | Ford |
| Model | A4 | Sierra |
| Year Released | 2005 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 2983 cc | 1751 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 223 HP | 75 HP |
| Engine RPM | 6500 RPM | 4500 RPM |
| Torque | 300 Nm | 152 Nm |
| Engine Bore Size | 83.1 mm | 82.5 mm |
| Engine Stroke Size | 93 mm | 82 mm |
| Engine Compression Ratio | 10.1:1 | 21.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1695 kg | 1145 kg |
| Vehicle Length | 4550 mm | 4430 mm |
| Vehicle Width | 1770 mm | 1700 mm |
| Vehicle Height | 1430 mm | 1370 mm |
| Wheelbase Size | 2580 mm | 2620 mm |
| Fuel Tank Capacity | 66 L | 60 L |
