2009 Audi A4 vs. 1987 Audi 90
To start off, 2009 Audi A4 is newer by 22 year(s). Which means there will be less support and parts availability for 1987 Audi 90. In addition, the cost of maintenance, including insurance, on 1987 Audi 90 would be higher. At 2,965 cc (6 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (222 HP @ 4000 RPM) has 87 more horse power than 1987 Audi 90. (135 HP @ 5500 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 1987 Audi 90. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 300 kg more than 1987 Audi 90. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2009 Audi A4 (450 Nm @ 1400 RPM) has 264 more torque (in Nm) than 1987 Audi 90. (186 Nm @ 4000 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1987 Audi 90.
Compare all specifications:
| 2009 Audi A4 | 1987 Audi 90 | |
| Make | Audi | Audi |
| Model | A4 | 90 |
| Year Released | 2009 | 1987 |
| Engine Position | Front | Front |
| Engine Size | 2965 cc | 2309 cc |
| Engine Cylinders | 6 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Horse Power | 222 HP | 135 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 450 Nm | 186 Nm |
| Torque RPM | 1400 RPM | 4000 RPM |
| Engine Bore Size | 83 mm | 82.5 mm |
| Engine Stroke Size | 91.4 mm | 86.4 mm |
| Engine Compression Ratio | 17.0:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1610 kg | 1310 kg |
| Vehicle Length | 4550 mm | 4400 mm |
| Vehicle Width | 1780 mm | 1700 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2660 mm | 2690 mm |
| Fuel Consumption Overall | 7.6 L/100km | 4.8 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
