1973 Bitter CD vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 33 year(s). Which means there will be less support and parts availability for 1973 Bitter CD. In addition, the cost of maintenance, including insurance, on 1973 Bitter CD would be higher. At 5,353 cc (8 cylinders), 1973 Bitter CD is equipped with a bigger engine. In terms of performance, 1973 Bitter CD (226 HP @ 4700 RPM) has 37 more horse power than 2006 BMW Z4. (189 HP @ 6000 RPM). In normal driving conditions, 1973 Bitter CD should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 1973 Bitter CD weights approximately 389 kg more than 2006 BMW Z4. 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, 1973 Bitter CD (427 Nm @ 3000 RPM) has 182 more torque (in Nm) than 2006 BMW Z4. (245 Nm @ 3500 RPM). This means 1973 Bitter CD will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4. 1973 Bitter CD has automatic transmission and 2006 BMW Z4 has manual transmission. 2006 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1973 Bitter CD will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1973 Bitter CD | 2006 BMW Z4 | |
| Make | Bitter | BMW |
| Model | CD | Z4 |
| Year Released | 1973 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 5353 cc | 2492 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 226 HP | 189 HP |
| Engine RPM | 4700 RPM | 6000 RPM |
| Torque | 427 Nm | 245 Nm |
| Torque RPM | 3000 RPM | 3500 RPM |
| Engine Bore Size | 101.6 mm | 84 mm |
| Engine Stroke Size | 82.6 mm | 75 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Top Speed | 209 km/hour | 235 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1724 kg | 1335 kg |
| Vehicle Length | 4860 mm | 4100 mm |
| Vehicle Width | 1850 mm | 1790 mm |
| Vehicle Height | 1290 mm | 1310 mm |
| Wheelbase Size | 2690 mm | 2500 mm |
| Fuel Tank Capacity | 80 L | 55 L |
