2006 BMW Z4 vs. 2007 BMW M5
To start off, 2007 BMW M5 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW Z4. In addition, the cost of maintenance, including insurance, on 2006 BMW Z4 would be higher. At 4,999 cc (10 cylinders), 2007 BMW M5 is equipped with a bigger engine. In terms of performance, 2007 BMW M5 (500 HP @ 7750 RPM) has 311 more horse power than 2006 BMW Z4. (189 HP @ 6000 RPM) In normal driving conditions, 2007 BMW M5 should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW M5 weights approximately 420 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, 2007 BMW M5 (520 Nm @ 6100 RPM) has 275 more torque (in Nm) than 2006 BMW Z4. (245 Nm @ 3500 RPM). This means 2007 BMW M5 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4. 2007 BMW M5 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. 2007 BMW M5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW Z4 | 2007 BMW M5 | |
| Make | BMW | BMW |
| Model | Z4 | M5 |
| Year Released | 2006 | 2007 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 4999 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 189 HP | 500 HP |
| Engine RPM | 6000 RPM | 7750 RPM |
| Torque | 245 Nm | 520 Nm |
| Torque RPM | 3500 RPM | 6100 RPM |
| Engine Compression Ratio | 11.0:1 | 12.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 235 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7 seconds | 4.7 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1335 kg | 1755 kg |
| Vehicle Length | 4100 mm | 4860 mm |
| Vehicle Width | 1790 mm | 1850 mm |
| Vehicle Height | 1310 mm | 1470 mm |
| Wheelbase Size | 2500 mm | 2890 mm |
| Fuel Consumption Overall | 9 L/100km | 14.8 L/100km |
| Fuel Tank Capacity | 55 L | 70 L |
