2007 BMW Z4 vs. 2003 BMW 330
To start off, 2007 BMW Z4 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 BMW 330. In addition, the cost of maintenance, including insurance, on 2003 BMW 330 would be higher. At 2,977 cc (6 cylinders), 2003 BMW 330 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (215 HP @ 6500 RPM) has 26 more horse power than 2003 BMW 330. (189 HP @ 4000 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2003 BMW 330. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 330 weights approximately 178 kg more than 2007 BMW Z4.
Because 2003 BMW 330 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2003 BMW 330 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, 2003 BMW 330 (400 Nm @ 1500 RPM) has 150 more torque (in Nm) than 2007 BMW Z4. (250 Nm @ 2750 RPM). This means 2003 BMW 330 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4. 2003 BMW 330 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. 2003 BMW 330 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW Z4 | 2003 BMW 330 | |
| Make | BMW | BMW |
| Model | Z4 | 330 |
| Year Released | 2007 | 2003 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 2977 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 189 HP |
| Engine RPM | 6500 RPM | 4000 RPM |
| Torque | 250 Nm | 400 Nm |
| Torque RPM | 2750 RPM | 1500 RPM |
| Engine Bore Size | 82 mm | 84 mm |
| Engine Stroke Size | 78.8 mm | 90 mm |
| Engine Compression Ratio | 11.0:1 | 10.2:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1362 kg | 1540 kg |
| Vehicle Length | 4100 mm | 4480 mm |
| Vehicle Width | 1310 mm | 1770 mm |
| Vehicle Height | 1790 mm | 1380 mm |
| Wheelbase Size | 2500 mm | 2710 mm |
| Fuel Tank Capacity | 55 L | 63 L |
