2005 Audi S6 vs. 1981 Audi UR
To start off, 2005 Audi S6 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 4,172 cc (8 cylinders), 2005 Audi S6 is equipped with a bigger engine. In terms of performance, 2005 Audi S6 (335 HP @ 7000 RPM) has 138 more horse power than 1981 Audi UR. (197 HP @ 5500 RPM). In normal driving conditions, 2005 Audi S6 should accelerate faster than 1981 Audi UR. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S6 weights approximately 510 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.
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, 2005 Audi S6 (420 Nm @ 3400 RPM) has 135 more torque (in Nm) than 1981 Audi UR. (285 Nm @ 3500 RPM). This means 2005 Audi S6 will have an easier job in driving up hills or pulling heavy equipment than 1981 Audi UR. 2005 Audi S6 has automatic transmission and 1981 Audi UR has manual transmission. 1981 Audi UR will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Audi S6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi S6 | 1981 Audi UR | |
| Make | Audi | Audi |
| Model | S6 | UR |
| Year Released | 2005 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 2144 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Horse Power | 335 HP | 197 HP |
| Engine RPM | 7000 RPM | 5500 RPM |
| Torque | 420 Nm | 285 Nm |
| Torque RPM | 3400 RPM | 3500 RPM |
| Engine Bore Size | 84.5 mm | 79.5 mm |
| Engine Stroke Size | 93 mm | 86.4 mm |
| Engine Compression Ratio | 11.0:1 | 7.0:1 |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1760 kg | 1250 kg |
| Wheelbase Size | 2770 mm | 2530 mm |
| Fuel Tank Capacity | 82 L | 70 L |
