2004 BMW M3 vs. 2013 BMW 6 series
To start off, 2013 BMW 6 series is newer by 9 year(s). Which means there will be less support and parts availability for 2004 BMW M3. In addition, the cost of maintenance, including insurance, on 2004 BMW M3 would be higher. At 4,395 cc (8 cylinders), 2013 BMW 6 series is equipped with a bigger engine. In terms of performance, 2013 BMW 6 series (437 HP @ 5500 RPM) has 109 more horse power than 2004 BMW M3. (328 HP @ 7400 RPM) In normal driving conditions, 2013 BMW 6 series should accelerate faster than 2004 BMW M3. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 6 series weights approximately 451 kg more than 2004 BMW M3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2013 BMW 6 series is all wheel drive (AWD), it will have significant more traction and grip than 2004 BMW M3. In wet, icy, snow, or gravel driving conditions, 2013 BMW 6 series 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, 2013 BMW 6 series (649 Nm) has 299 more torque (in Nm) than 2004 BMW M3. (350 Nm). This means 2013 BMW 6 series will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW M3.
Compare all specifications:
| 2004 BMW M3 | 2013 BMW 6 series | |
| Make | BMW | BMW |
| Model | M3 | 6 series |
| Year Released | 2004 | 2013 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 4395 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 437 HP |
| Engine RPM | 7400 RPM | 5500 RPM |
| Torque | 350 Nm | 649 Nm |
| Engine Bore Size | 87 mm | 89 mm |
| Engine Stroke Size | 91 mm | 88 mm |
| Engine Compression Ratio | 11.5:1 | 10.0 :1 |
| Drive Type | Rear | AWD |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1549 kg | 2000 kg |
| Vehicle Length | 4500 mm | 4896 mm |
| Vehicle Width | 1790 mm | 2081 mm |
| Vehicle Height | 1380 mm | 1369 mm |
| Wheelbase Size | 2730 mm | 2855 mm |
| Fuel Consumption Highway | 9.8 L/100km | 7.1 L/100km |
| Fuel Consumption City | 14.7 L/100km | 12.9 L/100km |
| Fuel Tank Capacity | 63 L | 70 L |
