2006 BMW Z4 vs. 1975 BMW 1502
To start off, 2006 BMW Z4 is newer by 31 year(s). Which means there will be less support and parts availability for 1975 BMW 1502. In addition, the cost of maintenance, including insurance, on 1975 BMW 1502 would be higher. At 2,492 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (189 HP @ 6000 RPM) has 116 more horse power than 1975 BMW 1502. (73 HP @ 5800 RPM). In normal driving conditions, 2006 BMW Z4 should accelerate faster than 1975 BMW 1502. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 355 kg more than 1975 BMW 1502. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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, 2006 BMW Z4 (245 Nm @ 3500 RPM) has 127 more torque (in Nm) than 1975 BMW 1502. (118 Nm @ 3700 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1975 BMW 1502.
Compare all specifications:
| 2006 BMW Z4 | 1975 BMW 1502 | |
| Make | BMW | BMW |
| Model | Z4 | 1502 |
| Year Released | 2006 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 1573 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 189 HP | 73 HP |
| Engine RPM | 6000 RPM | 5800 RPM |
| Torque | 245 Nm | 118 Nm |
| Torque RPM | 3500 RPM | 3700 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 75 mm | 71 mm |
| Engine Compression Ratio | 11.0:1 | 8.0:1 |
| Top Speed | 235 km/hour | 155 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1335 kg | 980 kg |
| Vehicle Length | 4100 mm | 4240 mm |
| Vehicle Width | 1790 mm | 1600 mm |
| Vehicle Height | 1310 mm | 1420 mm |
| Wheelbase Size | 2500 mm | 2510 mm |
| Fuel Tank Capacity | 55 L | 50 L |
