2003 BMW M3 vs. 2004 BMW 325
To start off, 2004 BMW 325 is newer by 1 year(s). Which means there will be less support and parts availability for 2003 BMW M3. In addition, the cost of maintenance, including insurance, on 2003 BMW M3 would be higher. At 3,168 cc (6 cylinders), 2003 BMW M3 is equipped with a bigger engine. In terms of performance, 2003 BMW M3 (342 HP @ 7900 RPM) has 226 more horse power than 2004 BMW 325. (116 HP @ 4800 RPM). In normal driving conditions, 2003 BMW M3 should accelerate faster than 2004 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW M3 weights approximately 50 kg more than 2004 BMW 325. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2003 BMW M3 (350 Nm @ 4900 RPM) has 128 more torque (in Nm) than 2004 BMW 325. (222 Nm @ 1900 RPM). This means 2003 BMW M3 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 325.
Compare all specifications:
| 2003 BMW M3 | 2004 BMW 325 | |
| Make | BMW | BMW |
| Model | M3 | 325 |
| Year Released | 2003 | 2004 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3168 cc | 2494 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 342 HP | 116 HP |
| Engine RPM | 7900 RPM | 4800 RPM |
| Torque | 350 Nm | 222 Nm |
| Torque RPM | 4900 RPM | 1900 RPM |
| Engine Bore Size | 87 mm | 80 mm |
| Engine Stroke Size | 91 mm | 83 mm |
| Engine Compression Ratio | 11.5:1 | 22.0:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 259 km/hour | 198 km/hour |
| Acceleration 0-100mph | 4.9 seconds | 12 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1385 kg | 1335 kg |
| Vehicle Length | 4500 mm | 4440 mm |
| Vehicle Width | 1790 mm | 1700 mm |
| Vehicle Height | 1370 mm | 1400 mm |
| Wheelbase Size | 2730 mm | 2710 mm |
| Fuel Consumption Highway | 8.4 L/100km | 7 L/100km |
| Fuel Consumption City | 17.8 L/100km | 9.1 L/100km |
| Fuel Consumption Overall | 11.4 L/100km | 5.7 L/100km |
| Fuel Tank Capacity | 63 L | 65 L |
