2007 Audi A4 vs. 1981 Audi UR
To start off, 2007 Audi A4 is newer by 26 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, both vehicles can yield 197 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 725 kg more than 1981 Audi UR.
Because 1981 Audi UR is four wheel drive (4WD), it will have significant more traction and grip than 2007 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 5 more torque (in Nm) than 2007 Audi A4. (280 Nm @ 1800 RPM). This means 1981 Audi UR will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A4.
Compare all specifications:
| 2007 Audi A4 | 1981 Audi UR | |
| Make | Audi | Audi |
| Model | A4 | UR |
| Year Released | 2007 | 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 | 4 valves | 2 valves |
| Horse Power | 197 HP | 197 HP |
| Engine RPM | 5100 RPM | 5500 RPM |
| Torque | 280 Nm | 285 Nm |
| Torque RPM | 1800 RPM | 3500 RPM |
| Engine Bore Size | 82.5 mm | 79.5 mm |
| Engine Stroke Size | 92.8 mm | 86.4 mm |
| Engine Compression Ratio | 10.5:1 | 7.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1975 kg | 1250 kg |
| Vehicle Length | 4580 mm | 4430 mm |
| Vehicle Width | 1400 mm | 1690 mm |
| Vehicle Height | 1780 mm | 1360 mm |
| Wheelbase Size | 2650 mm | 2530 mm |
| Fuel Tank Capacity | 70 L | 70 L |
