2006 BMW M3 vs. 2004 BMW 325
To start off, 2006 BMW M3 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 BMW 325. In addition, the cost of maintenance, including insurance, on 2004 BMW 325 would be higher. At 3,246 cc (6 cylinders), 2006 BMW M3 is equipped with a bigger engine. In terms of performance, 2006 BMW M3 (338 HP @ 4900 RPM) has 149 more horse power than 2004 BMW 325. (189 HP @ 7400 RPM). In normal driving conditions, 2006 BMW M3 should accelerate faster than 2004 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 325 weights approximately 161 kg more than 2006 BMW M3.
Let's talk about torque, 2006 BMW M3 (365 Nm) has 128 more torque (in Nm) than 2004 BMW 325. (237 Nm). This means 2006 BMW M3 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 325.
Compare all specifications:
| 2006 BMW M3 | 2004 BMW 325 | |
| Make | BMW | BMW |
| Model | M3 | 325 |
| Year Released | 2006 | 2004 |
| Body Type | Coupe | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 2491 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 189 HP |
| Engine RPM | 4900 RPM | 7400 RPM |
| Torque | 365 Nm | 237 Nm |
| Engine Bore Size | 87.1 mm | 84 mm |
| Engine Stroke Size | 91 mm | 75 mm |
| Engine Compression Ratio | 11.5:1 | 10.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1549 kg | 1710 kg |
| Vehicle Length | 4500 mm | 4480 mm |
| Vehicle Width | 1790 mm | 1750 mm |
| Vehicle Height | 1380 mm | 1440 mm |
| Wheelbase Size | 2740 mm | 2730 mm |
| Fuel Consumption Highway | 9.8 L/100km | 9.1 L/100km |
| Fuel Consumption City | 14.7 L/100km | 12.4 L/100km |
| Fuel Consumption Overall | 11.9 L/100km | 10.7 L/100km |
| Fuel Tank Capacity | 63 L | 63 L |
