2008 BMW M5 vs. 2008 Fiat Siena
To start off, both 2008 BMW M5 and 2008 Fiat Siena were released in the same year (2008). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,999 cc (10 cylinders), 2008 BMW M5 is equipped with a bigger engine. In terms of performance, 2008 BMW M5 (500 HP @ 7750 RPM) has 394 more horse power than 2008 Fiat Siena. (106 HP @ 5500 RPM). In normal driving conditions, 2008 BMW M5 should accelerate faster than 2008 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW M5 weights approximately 660 kg more than 2008 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 BMW M5 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Fiat Siena. In wet, icy, snow, or gravel driving conditions, 2008 BMW M5 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, 2008 BMW M5 (519 Nm @ 6100 RPM) has 379 more torque (in Nm) than 2008 Fiat Siena. (140 Nm @ 4000 RPM). This means 2008 BMW M5 will have an easier job in driving up hills or pulling heavy equipment than 2008 Fiat Siena.
Compare all specifications:
| 2008 BMW M5 | 2008 Fiat Siena | |
| Make | BMW | Fiat |
| Model | M5 | Siena |
| Year Released | 2008 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4999 cc | 1581 cc |
| Engine Cylinders | 10 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 500 HP | 106 HP |
| Engine RPM | 7750 RPM | 5500 RPM |
| Torque | 519 Nm | 140 Nm |
| Torque RPM | 6100 RPM | 4000 RPM |
| Engine Compression Ratio | 12.0:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline |
| Acceleration 0-100mph | 4.7 seconds | 10.5 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1755 kg | 1095 kg |
| Vehicle Length | 4870 mm | 3550 mm |
| Vehicle Width | 1850 mm | 1640 mm |
| Vehicle Height | 1470 mm | 1490 mm |
| Wheelbase Size | 2890 mm | 2370 mm |
| Fuel Consumption Overall | 14 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 70 L | 47 L |
