2003 BMW 325 vs. 2004 BMW Z4
To start off, 2004 BMW Z4 is newer by 1 year(s). Which means there will be less support and parts availability for 2003 BMW 325. In addition, the cost of maintenance, including insurance, on 2003 BMW 325 would be higher. Both 2003 BMW 325 and 2004 BMW Z4 are equipped with a 2,494 cc engine. In terms of performance, 2003 BMW 325 (192 HP @ 6000 RPM) has 7 more horse power than 2004 BMW Z4. (185 HP @ 6000 RPM). In normal driving conditions, 2003 BMW 325 should accelerate faster than 2004 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 325 weights approximately 184 kg more than 2004 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, both vehicles can yield 245 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles. 2004 BMW Z4 has automatic transmission and 2003 BMW 325 has manual transmission. 2003 BMW 325 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 BMW Z4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 BMW 325 | 2004 BMW Z4 | |
| Make | BMW | BMW |
| Model | 325 | Z4 |
| Year Released | 2003 | 2004 |
| Body Type | Hatchback | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 2494 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 192 HP | 185 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 245 Nm | 245 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Bore Size | 84.1 mm | 84 mm |
| Engine Stroke Size | 75 mm | 75 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 1480 kg | 1296 kg |
| Vehicle Length | 4270 mm | 4100 mm |
| Vehicle Width | 1760 mm | 1790 mm |
| Vehicle Height | 1410 mm | 1300 mm |
| Wheelbase Size | 2730 mm | 2500 mm |
| Fuel Consumption | 7 L/100km | 8.4 L/100km |
| Fuel Consumption City | 12.3 L/100km | 11.8 L/100km |
| Fuel Consumption Overall | 8.9 L/100km | 10.2 L/100km |
| Fuel Tank Capacity | 63 L | 55 L |
