2008 Alpina B5 vs. 2006 Fiat Siena
To start off, 2008 Alpina B5 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2006 Fiat Siena would be higher. At 4,396 cc (8 cylinders), 2008 Alpina B5 is equipped with a bigger engine. In terms of performance, 2008 Alpina B5 (493 HP @ 5500 RPM) has 425 more horse power than 2006 Fiat Siena. (68 HP @ 4600 RPM). In normal driving conditions, 2008 Alpina B5 should accelerate faster than 2006 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2008 Alpina B5 weights approximately 165 kg more than 2006 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Alpina B5 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2008 Alpina B5. However, in wet, icy, snow, or gravel driving conditions, 2006 Fiat Siena, being front wheel drive (FWD), will offer much better control with better grip. 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 Alpina B5 (700 Nm @ 4250 RPM) has 564 more torque (in Nm) than 2006 Fiat Siena. (136 Nm @ 2500 RPM). This means 2008 Alpina B5 will have an easier job in driving up hills or pulling heavy equipment than 2006 Fiat Siena. 2008 Alpina B5 has automatic transmission and 2006 Fiat Siena has manual transmission. 2006 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Alpina B5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Alpina B5 | 2006 Fiat Siena | |
| Make | Alpina | Fiat |
| Model | B5 | Siena |
| Year Released | 2008 | 2006 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4396 cc | 1697 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 493 HP | 68 HP |
| Engine RPM | 5500 RPM | 4600 RPM |
| Torque | 700 Nm | 136 Nm |
| Torque RPM | 4250 RPM | 2500 RPM |
| Engine Bore Size | 92 mm | 82.6 mm |
| Engine Stroke Size | 82.7 mm | 79.2 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Acceleration 0-100mph | 4.8 seconds | 16 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1810 kg | 1645 kg |
| Vehicle Length | 4850 mm | 4000 mm |
| Vehicle Height | 1500 mm | 1700 mm |
| Wheelbase Size | 2890 mm | 2550 mm |
| Fuel Consumption Overall | 12.4 L/100km | 6.9 L/100km |
| Fuel Tank Capacity | 70 L | 47 L |
