1981 Audi UR vs. 2004 BMW 745
To start off, 2004 BMW 745 is newer by 23 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 4,392 cc (8 cylinders), 2004 BMW 745 is equipped with a bigger engine. In terms of performance, 2004 BMW 745 (310 HP @ 7900 RPM) has 113 more horse power than 1981 Audi UR. (197 HP @ 5500 RPM) In normal driving conditions, 2004 BMW 745 should accelerate faster than 1981 Audi UR. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 745 weights approximately 735 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 2004 BMW 745. 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, 2004 BMW 745 (451 Nm) has 166 more torque (in Nm) than 1981 Audi UR. (285 Nm). This means 2004 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 1981 Audi UR.
Compare all specifications:
| 1981 Audi UR | 2004 BMW 745 | |
| Make | Audi | BMW |
| Model | UR | 745 |
| Year Released | 1981 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 2144 cc | 4392 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 197 HP | 310 HP |
| Engine RPM | 5500 RPM | 7900 RPM |
| Torque | 285 Nm | 451 Nm |
| Engine Bore Size | 79.5 mm | 92 mm |
| Engine Stroke Size | 86.4 mm | 83 mm |
| Drive Type | 4WD | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1250 kg | 1985 kg |
| Vehicle Length | 4430 mm | 5040 mm |
| Vehicle Width | 1690 mm | 1910 mm |
| Vehicle Height | 1360 mm | 1500 mm |
| Wheelbase Size | 2530 mm | 3000 mm |
| Fuel Tank Capacity | 70 L | 88 L |
