1973 BMW Touring vs. 2008 BMW Z4
To start off, 2008 BMW Z4 is newer by 35 year(s). Which means there will be less support and parts availability for 1973 BMW Touring. In addition, the cost of maintenance, including insurance, on 1973 BMW Touring would be higher. At 2,497 cc (6 cylinders), 2008 BMW Z4 is equipped with a bigger engine. In terms of performance, 2008 BMW Z4 (175 HP @ 5800 RPM) has 90 more horse power than 1973 BMW Touring. (85 HP @ 5700 RPM) In normal driving conditions, 2008 BMW Z4 should accelerate faster than 1973 BMW Touring. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW Z4 weights approximately 320 kg more than 1973 BMW Touring. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2008 BMW Z4 (230 Nm @ 3500 RPM) has 100 more torque (in Nm) than 1973 BMW Touring. (130 Nm @ 3500 RPM). This means 2008 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1973 BMW Touring.
Compare all specifications:
| 1973 BMW Touring | 2008 BMW Z4 | |
| Make | BMW | BMW |
| Model | Touring | Z4 |
| Year Released | 1973 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 1573 cc | 2497 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 85 HP | 175 HP |
| Engine RPM | 5700 RPM | 5800 RPM |
| Torque | 130 Nm | 230 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 82 mm |
| Engine Stroke Size | 71 mm | 78.8 mm |
| Engine Compression Ratio | 8.6:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Number of Seats | 5 seats | 2 seats |
| Vehicle Weight | 1030 kg | 1350 kg |
| Vehicle Length | 4120 mm | 4100 mm |
| Vehicle Width | 1600 mm | 1790 mm |
| Vehicle Height | 1390 mm | 1310 mm |
| Wheelbase Size | 2510 mm | 2500 mm |
