2006 BMW Z4 vs. 2003 TVR Speed 12
To start off, 2006 BMW Z4 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 TVR Speed 12. In addition, the cost of maintenance, including insurance, on 2003 TVR Speed 12 would be higher. At 7,729 cc (12 cylinders), 2003 TVR Speed 12 is equipped with a bigger engine. In terms of performance, 2003 TVR Speed 12 (790 HP @ 7750 RPM) has 447 more horse power than 2006 BMW Z4. (343 HP @ 7900 RPM) In normal driving conditions, 2003 TVR Speed 12 should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 332 kg more than 2003 TVR Speed 12.
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, 2003 TVR Speed 12 (881 Nm @ 5750 RPM) has 386 more torque (in Nm) than 2006 BMW Z4. (495 Nm @ 4900 RPM). This means 2003 TVR Speed 12 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2006 BMW Z4 | 2003 TVR Speed 12 | |
| Make | BMW | TVR |
| Model | Z4 | Speed 12 |
| Year Released | 2006 | 2003 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 3246 cc | 7729 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 343 HP | 790 HP |
| Engine RPM | 7900 RPM | 7750 RPM |
| Torque | 495 Nm | 881 Nm |
| Torque RPM | 4900 RPM | 5750 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1332 kg | 1000 kg |
| Vehicle Length | 4100 mm | 4310 mm |
| Vehicle Width | 1790 mm | 1970 mm |
| Vehicle Height | 1300 mm | 1110 mm |
| Wheelbase Size | 2500 mm | 2570 mm |
| Fuel Consumption Overall | 11.4 L/100km | 13 L/100km |
| Fuel Tank Capacity | 60 L | 57 L |
