2006 BMW Z4 vs. 2006 BMW M5
To start off, both 2006 BMW Z4 and 2006 BMW M5 were released in the same year (2006). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,998 cc (10 cylinders), 2006 BMW M5 is equipped with a bigger engine. In terms of performance, 2006 BMW M5 (500 HP @ 7750 RPM) has 311 more horse power than 2006 BMW Z4. (189 HP @ 6000 RPM) In normal driving conditions, 2006 BMW M5 should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2006 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.
Because 2006 BMW M5 is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2006 BMW M5 will offer significantly more control. 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, 2006 BMW M5 (519 Nm @ 6100 RPM) has 274 more torque (in Nm) than 2006 BMW Z4. (245 Nm @ 3500 RPM). This means 2006 BMW M5 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2006 BMW Z4 | 2006 BMW M5 | |
| Make | BMW | BMW |
| Model | Z4 | M5 |
| Year Released | 2006 | 2006 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 4998 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 500 HP |
| Engine RPM | 6000 RPM | 7750 RPM |
| Torque | 245 Nm | 519 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 | 245 km/hour |
| Acceleration 0-100mph | 7 seconds | 4.7 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| 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 | 16.8 L/100km |
| Fuel Tank Capacity | 55 L | 70 L |
