2007 BMW Z4 vs. 2005 BMW 318
To start off, 2007 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 BMW 318. In addition, the cost of maintenance, including insurance, on 2005 BMW 318 would be higher. At 3,199 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (358 HP @ 7900 RPM) has 209 more horse power than 2005 BMW 318. (149 HP @ 6000 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2005 BMW 318.
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 Z4 (385 Nm @ 4900 RPM) has 185 more torque (in Nm) than 2005 BMW 318. (200 Nm @ 3750 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 318. 2005 BMW 318 has automatic transmission and 2007 BMW Z4 has manual transmission. 2007 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW 318 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW Z4 | 2005 BMW 318 | |
| Make | BMW | BMW |
| Model | Z4 | 318 |
| Year Released | 2007 | 2005 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3199 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 358 HP | 149 HP |
| Engine RPM | 7900 RPM | 6000 RPM |
| Torque | 385 Nm | 200 Nm |
| Torque RPM | 4900 RPM | 3750 RPM |
| Engine Compression Ratio | 11.5:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 273 km/hour | 218 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Length | 4100 mm | 4480 mm |
| Vehicle Width | 1790 mm | 1750 mm |
| Vehicle Height | 1300 mm | 1420 mm |
| Wheelbase Size | 2500 mm | 2790 mm |
