2006 Alpina B7 vs. 1981 Audi UR
To start off, 2006 Alpina B7 is newer by 25 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 4,398 cc (8 cylinders), 2006 Alpina B7 is equipped with a bigger engine. In terms of performance, 2006 Alpina B7 (492 HP @ 5500 RPM) has 295 more horse power than 1981 Audi UR. (197 HP @ 5500 RPM). In normal driving conditions, 2006 Alpina B7 should accelerate faster than 1981 Audi UR. With that said, vehicle weight also plays an important factor in acceleration. 2006 Alpina B7 weights approximately 700 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 2006 Alpina B7. 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, 2006 Alpina B7 (700 Nm @ 4250 RPM) has 415 more torque (in Nm) than 1981 Audi UR. (285 Nm @ 3500 RPM). This means 2006 Alpina B7 will have an easier job in driving up hills or pulling heavy equipment than 1981 Audi UR. 2006 Alpina B7 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. 2006 Alpina B7 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Alpina B7 | 1981 Audi UR | |
| Make | Alpina | Audi |
| Model | B7 | UR |
| Year Released | 2006 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2144 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 492 HP | 197 HP |
| Engine RPM | 5500 RPM | 5500 RPM |
| Torque | 700 Nm | 285 Nm |
| Torque RPM | 4250 RPM | 3500 RPM |
| Engine Bore Size | 92 mm | 79.5 mm |
| Engine Stroke Size | 82.7 mm | 86.4 mm |
| Engine Compression Ratio | 9.0:1 | 7.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1950 kg | 1250 kg |
| Vehicle Length | 5040 mm | 4430 mm |
| Vehicle Width | 1910 mm | 1690 mm |
| Vehicle Height | 1480 mm | 1360 mm |
| Wheelbase Size | 3000 mm | 2530 mm |
| Fuel Tank Capacity | 88 L | 70 L |
