2005 Audi S4 vs. 2003 BMW M3
To start off, 2005 Audi S4 is newer by 2 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 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2003 BMW M3 (342 HP @ 7900 RPM) has 2 more horse power than 2005 Audi S4. (340 HP @ 4000 RPM) In normal driving conditions, 2003 BMW M3 should accelerate faster than 2005 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 385 kg more than 2003 BMW M3.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 60 more torque (in Nm) than 2003 BMW M3. (350 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW M3.
Compare all specifications:
| 2005 Audi S4 | 2003 BMW M3 | |
| Make | Audi | BMW |
| Model | S4 | M3 |
| Year Released | 2005 | 2003 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 3168 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 342 HP |
| Engine RPM | 4000 RPM | 7900 RPM |
| Torque | 410 Nm | 350 Nm |
| Engine Bore Size | 85 mm | 87 mm |
| Engine Stroke Size | 93 mm | 91 mm |
| Engine Compression Ratio | 11.0:1 | 11.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1770 kg | 1385 kg |
| Vehicle Length | 4550 mm | 4500 mm |
| Vehicle Width | 1770 mm | 1790 mm |
| Vehicle Height | 1430 mm | 1370 mm |
| Wheelbase Size | 2770 mm | 2730 mm |
| Fuel Consumption Highway | 9.8 L/100km | 8.4 L/100km |
| Fuel Consumption City | 13.1 L/100km | 17.8 L/100km |
| Fuel Consumption Overall | 11.8 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 66 L | 63 L |
