2005 Audi A4 vs. 1981 Audi UR
To start off, 2005 Audi A4 is newer by 24 year(s). Which means there will be less support and parts availability for 1981 Audi UR. In addition, the cost of maintenance, including insurance, on 1981 Audi UR would be higher. At 2,144 cc (5 cylinders), 1981 Audi UR is equipped with a bigger engine. In terms of performance, 1981 Audi UR (197 HP @ 5500 RPM) has 68 more horse power than 2005 Audi A4. (129 HP @ 3300 RPM) In normal driving conditions, 1981 Audi UR should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 60 kg more than 1981 Audi UR.
Because 1981 Audi UR is four wheel drive (4WD), it will have significant more traction and grip than 2005 Audi A4. In wet, icy, snow, or gravel driving conditions, 1981 Audi UR 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, 1981 Audi UR (285 Nm @ 3500 RPM) has 90 more torque (in Nm) than 2005 Audi A4. (195 Nm @ 3300 RPM). This means 1981 Audi UR will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4.
Compare all specifications:
| 2005 Audi A4 | 1981 Audi UR | |
| Make | Audi | Audi |
| Model | A4 | UR |
| Year Released | 2005 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 2144 cc |
| Engine Cylinders | 4 cylinders | 5 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 129 HP | 197 HP |
| Engine RPM | 3300 RPM | 5500 RPM |
| Torque | 195 Nm | 285 Nm |
| Torque RPM | 3300 RPM | 3500 RPM |
| Engine Bore Size | 82.5 mm | 79.5 mm |
| Engine Stroke Size | 92.8 mm | 86.4 mm |
| Engine Compression Ratio | 10.3:1 | 7.0:1 |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1310 kg | 1250 kg |
| Vehicle Length | 4550 mm | 4430 mm |
| Vehicle Width | 1780 mm | 1690 mm |
| Vehicle Height | 1430 mm | 1360 mm |
| Wheelbase Size | 2580 mm | 2530 mm |
| Fuel Tank Capacity | 70 L | 70 L |
