1981 Audi UR vs. 2012 BMW Z4
To start off, 2012 BMW Z4 is newer by 31 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, 1981 Audi UR (197 HP @ 5500 RPM) has 15 more horse power than 2012 BMW Z4. (182 HP @ 5000 RPM). In normal driving conditions, 1981 Audi UR should accelerate faster than 2012 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2012 BMW Z4 weights approximately 230 kg more than 1981 Audi UR.
Because 1981 Audi UR is four wheel drive (4WD), it will have significant more traction and grip than 2012 BMW Z4. 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 15 more torque (in Nm) than 2012 BMW Z4. (270 Nm @ 1250 RPM). This means 1981 Audi UR will have an easier job in driving up hills or pulling heavy equipment than 2012 BMW Z4.
Compare all specifications:
| 1981 Audi UR | 2012 BMW Z4 | |
| Make | Audi | BMW |
| Model | UR | Z4 |
| Year Released | 1981 | 2012 |
| Engine Position | Front | Front |
| Engine Size | 2144 cc | 1997 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 197 HP | 182 HP |
| Engine RPM | 5500 RPM | 5000 RPM |
| Torque | 285 Nm | 270 Nm |
| Torque RPM | 3500 RPM | 1250 RPM |
| Engine Bore Size | 79.5 mm | 90.1 mm |
| Engine Stroke Size | 86.4 mm | 84 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1250 kg | 1480 kg |
| Vehicle Length | 4430 mm | 4239 mm |
| Vehicle Width | 1690 mm | 1791 mm |
| Vehicle Height | 1360 mm | 1290 mm |
| Wheelbase Size | 2530 mm | 2497 mm |
| Fuel Tank Capacity | 70 L | 55 L |
