2005 Audi A4 vs. 1991 Audi 90
To start off, 2005 Audi A4 is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Audi 90. In addition, the cost of maintenance, including insurance, on 1991 Audi 90 would be higher. At 2,392 cc (6 cylinders), 2005 Audi A4 is equipped with a bigger engine. In terms of performance, 2005 Audi A4 (178 HP @ 4000 RPM) has 64 more horse power than 1991 Audi 90. (114 HP @ 5400 RPM). In normal driving conditions, 2005 Audi A4 should accelerate faster than 1991 Audi 90. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 480 kg more than 1991 Audi 90. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Audi 90. In wet, icy, snow, or gravel driving conditions, 2005 Audi A4 will offer significantly more control. 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, 2005 Audi A4 (370 Nm @ 1500 RPM) has 198 more torque (in Nm) than 1991 Audi 90. (172 Nm @ 4000 RPM). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi 90.
Compare all specifications:
| 2005 Audi A4 | 1991 Audi 90 | |
| Make | Audi | Audi |
| Model | A4 | 90 |
| Year Released | 2005 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 2392 cc | 1992 cc |
| Engine Cylinders | 6 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Horse Power | 178 HP | 114 HP |
| Engine RPM | 4000 RPM | 5400 RPM |
| Torque | 370 Nm | 172 Nm |
| Torque RPM | 1500 RPM | 4000 RPM |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1590 kg | 1110 kg |
| Vehicle Length | 4550 mm | 4400 mm |
| Vehicle Width | 1780 mm | 1700 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2770 mm | 2550 mm |
