2005 Audi A8 vs. 1981 Audi UR
To start off, 2005 Audi A8 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 4,163 cc (8 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (335 HP @ 4000 RPM) has 138 more horse power than 1981 Audi UR. (197 HP @ 5500 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 1981 Audi UR. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 745 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 2005 Audi A8. 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, 2005 Audi A8 (431 Nm) has 146 more torque (in Nm) than 1981 Audi UR. (285 Nm). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1981 Audi UR.
Compare all specifications:
| 2005 Audi A8 | 1981 Audi UR | |
| Make | Audi | Audi |
| Model | A8 | UR |
| Year Released | 2005 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2144 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 335 HP | 197 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 431 Nm | 285 Nm |
| Engine Bore Size | 85 mm | 79.5 mm |
| Engine Stroke Size | 93 mm | 86.4 mm |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1995 kg | 1250 kg |
| Vehicle Length | 5190 mm | 4430 mm |
| Vehicle Width | 1900 mm | 1690 mm |
| Vehicle Height | 1460 mm | 1360 mm |
| Wheelbase Size | 3080 mm | 2530 mm |
| Fuel Tank Capacity | 90 L | 70 L |
