2005 BMW 630 vs. 2012 BMW Z4
To start off, 2012 BMW Z4 is newer by 7 year(s). Which means there will be less support and parts availability for 2005 BMW 630. In addition, the cost of maintenance, including insurance, on 2005 BMW 630 would be higher. At 2,999 cc (6 cylinders), 2005 BMW 630 is equipped with a bigger engine. In terms of performance, 2005 BMW 630 (254 HP @ 6600 RPM) has 10 more horse power than 2012 BMW Z4. (244 HP @ 5000 RPM). In normal driving conditions, 2005 BMW 630 should accelerate faster than 2012 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 630 weights approximately 274 kg more than 2012 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, 2012 BMW Z4 (350 Nm @ 1500 RPM) has 50 more torque (in Nm) than 2005 BMW 630. (300 Nm @ 2500 RPM). This means 2012 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 630.
Compare all specifications:
| 2005 BMW 630 | 2012 BMW Z4 | |
| Make | BMW | BMW |
| Model | 630 | Z4 |
| Year Released | 2005 | 2012 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2999 cc | 1997 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 254 HP | 244 HP |
| Engine RPM | 6600 RPM | 5000 RPM |
| Torque | 300 Nm | 350 Nm |
| Torque RPM | 2500 RPM | 1500 RPM |
| Engine Bore Size | 85 mm | 90.1 mm |
| Engine Stroke Size | 88 mm | 84 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.9 seconds | 5.7 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1764 kg | 1490 kg |
| Vehicle Length | 4830 mm | 4239 mm |
| Vehicle Width | 1860 mm | 1791 mm |
| Vehicle Height | 1380 mm | 1290 mm |
| Wheelbase Size | 2670 mm | 2497 mm |
| Fuel Consumption Overall | 9.6 L/100km | 6.8 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
