2005 Fiat Siena vs. 2007 Mercedes-Benz G
To start off, 2007 Mercedes-Benz G is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2005 Fiat Siena would be higher. At 4,965 cc (8 cylinders), 2007 Mercedes-Benz G is equipped with a bigger engine. In terms of performance, 2007 Mercedes-Benz G (292 HP @ 5500 RPM) has 168 more horse power than 2005 Fiat Siena. (124 HP @ 4000 RPM) In normal driving conditions, 2007 Mercedes-Benz G should accelerate faster than 2005 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercedes-Benz G weights approximately 145 kg more than 2005 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Mercedes-Benz G is four wheel drive (4WD), it will have significant more traction and grip than 2005 Fiat Siena. In wet, icy, snow, or gravel driving conditions, 2007 Mercedes-Benz G 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, 2007 Mercedes-Benz G (456 Nm @ 2800 RPM) has 316 more torque (in Nm) than 2005 Fiat Siena. (140 Nm @ 4000 RPM). This means 2007 Mercedes-Benz G will have an easier job in driving up hills or pulling heavy equipment than 2005 Fiat Siena. 2007 Mercedes-Benz G has automatic transmission and 2005 Fiat Siena has manual transmission. 2005 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Mercedes-Benz G will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Fiat Siena | 2007 Mercedes-Benz G | |
| Make | Fiat | Mercedes-Benz |
| Model | Siena | G |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 1585 cc | 4965 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 124 HP | 292 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 140 Nm | 456 Nm |
| Torque RPM | 4000 RPM | 2800 RPM |
| Engine Bore Size | 86.4 mm | 97 mm |
| Engine Stroke Size | 67.4 mm | 84 mm |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1095 kg | 1240 kg |
| Wheelbase Size | 2450 mm | 2410 mm |
| Fuel Tank Capacity | 47 L | 96 L |
