2006 BMW Z4 vs. 2005 Infiniti M
To start off, 2006 BMW Z4 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Infiniti M. In addition, the cost of maintenance, including insurance, on 2005 Infiniti M would be higher. At 4,494 cc (8 cylinders), 2005 Infiniti M is equipped with a bigger engine. In terms of performance, 2005 Infiniti M (335 HP @ 6400 RPM) has 80 more horse power than 2006 BMW Z4. (255 HP @ 6600 RPM) In normal driving conditions, 2005 Infiniti M should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 45 kg more than 2005 Infiniti M.
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, 2005 Infiniti M (461 Nm @ 4000 RPM) has 163 more torque (in Nm) than 2006 BMW Z4. (298 Nm @ 2750 RPM). This means 2005 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2006 BMW Z4 | 2005 Infiniti M | |
| Make | BMW | Infiniti |
| Model | Z4 | M |
| Year Released | 2006 | 2005 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2999 cc | 4494 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 255 HP | 335 HP |
| Engine RPM | 6600 RPM | 6400 RPM |
| Torque | 298 Nm | 461 Nm |
| Torque RPM | 2750 RPM | 4000 RPM |
| Engine Compression Ratio | 10.7:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1835 kg | 1790 kg |
| Vehicle Length | 4100 mm | 4900 mm |
| Vehicle Width | 1790 mm | 1800 mm |
| Vehicle Height | 1270 mm | 1520 mm |
| Wheelbase Size | 2500 mm | 2880 mm |
| Fuel Tank Capacity | 55 L | 75 L |
