2003 BMW 325 vs. 2007 BMW Z4
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 325. In addition, the cost of maintenance, including insurance, on 2003 BMW 325 would be higher. At 2,996 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (261 HP @ 6600 RPM) has 69 more horse power than 2003 BMW 325. (192 HP @ 6000 RPM) In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2003 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 325 weights approximately 82 kg more than 2007 BMW Z4.
Let's talk about torque, 2007 BMW Z4 (315 Nm @ 2750 RPM) has 70 more torque (in Nm) than 2003 BMW 325. (245 Nm @ 3500 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 325. 2007 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. 2007 BMW Z4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 BMW 325 | 2007 BMW Z4 | |
| Make | BMW | BMW |
| Model | 325 | Z4 |
| Year Released | 2003 | 2007 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 2996 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 192 HP | 261 HP |
| Engine RPM | 6000 RPM | 6600 RPM |
| Torque | 245 Nm | 315 Nm |
| Torque RPM | 3500 RPM | 2750 RPM |
| Engine Bore Size | 84.1 mm | 85 mm |
| Engine Stroke Size | 75 mm | 88 mm |
| Engine Compression Ratio | 10.5:1 | 10.7:1 |
| Acceleration 0-100mph | 7.1 seconds | 5.7 seconds |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 1480 kg | 1398 kg |
| Vehicle Length | 4270 mm | 4230 mm |
| Vehicle Width | 1760 mm | 1790 mm |
| Vehicle Height | 1410 mm | 1270 mm |
| Wheelbase Size | 2730 mm | 2500 mm |
| Fuel Consumption | 7 L/100km | 7.8 L/100km |
| Fuel Consumption City | 12.3 L/100km | 11.8 L/100km |
| Fuel Consumption Overall | 8.9 L/100km | 8.9 L/100km |
| Fuel Tank Capacity | 63 L | 55 L |
