2007 Audi A4 vs. 1985 Ford Sierra
To start off, 2007 Audi A4 is newer by 22 year(s). Which means there will be less support and parts availability for 1985 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1985 Ford Sierra would be higher. At 2,790 cc (6 cylinders), 1985 Ford Sierra is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (161 HP @ 5700 RPM) has 13 more horse power than 1985 Ford Sierra. (148 HP @ 5700 RPM). In normal driving conditions, 2007 Audi A4 should accelerate faster than 1985 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 185 kg more than 1985 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, 2007 Audi A4 (225 Nm @ 1950 RPM) has 5 more torque (in Nm) than 1985 Ford Sierra. (220 Nm @ 3800 RPM). This means 2007 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1985 Ford Sierra.
Compare all specifications:
| 2007 Audi A4 | 1985 Ford Sierra | |
| Make | Audi | Ford |
| Model | A4 | Sierra |
| Year Released | 2007 | 1985 |
| Engine Position | Front | Front |
| Engine Size | 1779 cc | 2790 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 161 HP | 148 HP |
| Engine RPM | 5700 RPM | 5700 RPM |
| Torque | 225 Nm | 220 Nm |
| Torque RPM | 1950 RPM | 3800 RPM |
| Engine Bore Size | 81 mm | 93 mm |
| Engine Stroke Size | 86.4 mm | 68.5 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Vehicle Weight | 1390 kg | 1205 kg |
| Vehicle Length | 4550 mm | 4400 mm |
| Vehicle Width | 1780 mm | 1680 mm |
| Vehicle Height | 1430 mm | 1370 mm |
| Wheelbase Size | 2650 mm | 2620 mm |
