2009 Audi A4 vs. 1985 Ford Sierra
To start off, 2009 Audi A4 is newer by 24 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, 2009 Audi A4 (200 HP @ 5100 RPM) has 52 more horse power than 1985 Ford Sierra. (148 HP @ 5700 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 1985 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1985 Ford Sierra weights approximately 175 kg more than 2009 Audi A4.
Let's talk about torque, 2009 Audi A4 (281 Nm @ 1800 RPM) has 61 more torque (in Nm) than 1985 Ford Sierra. (220 Nm @ 3800 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1985 Ford Sierra.
Compare all specifications:
| 2009 Audi A4 | 1985 Ford Sierra | |
| Make | Audi | Ford |
| Model | A4 | Sierra |
| Year Released | 2009 | 1985 |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 2790 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 200 HP | 148 HP |
| Engine RPM | 5100 RPM | 5700 RPM |
| Torque | 281 Nm | 220 Nm |
| Torque RPM | 1800 RPM | 3800 RPM |
| Engine Bore Size | 82.5 mm | 93 mm |
| Engine Stroke Size | 92.8 mm | 68.5 mm |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1030 kg | 1205 kg |
| Vehicle Length | 4580 mm | 4400 mm |
| Vehicle Width | 1780 mm | 1680 mm |
| Vehicle Height | 1400 mm | 1370 mm |
| Wheelbase Size | 2660 mm | 2620 mm |
