2004 Audi A4 vs. 1981 Audi UR
To start off, 2004 Audi A4 is newer by 23 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 2,981 cc (6 cylinders), 2004 Audi A4 is equipped with a bigger engine. In terms of performance, 2004 Audi A4 (217 HP @ 4000 RPM) has 20 more horse power than 1981 Audi UR. (197 HP @ 5500 RPM). In normal driving conditions, 2004 Audi A4 should accelerate faster than 1981 Audi UR. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi A4 weights approximately 480 kg more than 1981 Audi UR. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1981 Audi UR is four wheel drive (4WD), it will have significant more traction and grip than 2004 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, 2004 Audi A4 (300 Nm) has 15 more torque (in Nm) than 1981 Audi UR. (285 Nm). This means 2004 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1981 Audi UR.
Compare all specifications:
| 2004 Audi A4 | 1981 Audi UR | |
| Make | Audi | Audi |
| Model | A4 | UR |
| Year Released | 2004 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 2981 cc | 2144 cc |
| Engine Cylinders | 6 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 217 HP | 197 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 300 Nm | 285 Nm |
| Engine Bore Size | 83 mm | 79.5 mm |
| Engine Stroke Size | 93 mm | 86.4 mm |
| Engine Compression Ratio | 10.1:1 | 7.0:1 |
| Drive Type | Front | 4WD |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1730 kg | 1250 kg |
| Vehicle Length | 4580 mm | 4430 mm |
| Vehicle Width | 1780 mm | 1690 mm |
| Vehicle Height | 1400 mm | 1360 mm |
| Wheelbase Size | 2660 mm | 2530 mm |
| Fuel Tank Capacity | 70 L | 70 L |
