1999 Audi A4 vs. 1981 Audi UR
To start off, 1999 Audi A4 is newer by 18 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 74 more horse power than 1999 Audi A4. (123 HP @ 5800 RPM) In normal driving conditions, 1981 Audi UR should accelerate faster than 1999 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 1999 Audi A4 weights approximately 140 kg more than 1981 Audi UR.
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, 1981 Audi UR (285 Nm @ 3500 RPM) has 117 more torque (in Nm) than 1999 Audi A4. (168 Nm @ 3500 RPM). This means 1981 Audi UR will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4.
Compare all specifications:
| 1999 Audi A4 | 1981 Audi UR | |
| Make | Audi | Audi |
| Model | A4 | UR |
| Year Released | 1999 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 2144 cc |
| Engine Cylinders | 4 cylinders | 5 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 123 HP | 197 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 168 Nm | 285 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Bore Size | 81 mm | 79.5 mm |
| Engine Stroke Size | 86.4 mm | 86.4 mm |
| Engine Compression Ratio | 10.3:1 | 7.0:1 |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1390 kg | 1250 kg |
| Vehicle Length | 4480 mm | 4430 mm |
| Vehicle Width | 1740 mm | 1690 mm |
| Vehicle Height | 1420 mm | 1360 mm |
| Wheelbase Size | 2610 mm | 2530 mm |
| Fuel Tank Capacity | 60 L | 70 L |
