2003 Pontiac Bonneville vs. 2009 Toyota Sienna
To start off, 2009 Toyota Sienna is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Pontiac Bonneville. In addition, the cost of maintenance, including insurance, on 2003 Pontiac Bonneville would be higher. At 4,565 cc (8 cylinders), 2003 Pontiac Bonneville is equipped with a bigger engine. In terms of performance, 2003 Pontiac Bonneville (275 HP @ 5600 RPM) has 9 more horse power than 2009 Toyota Sienna. (266 HP @ 6200 RPM). In normal driving conditions, 2003 Pontiac Bonneville should accelerate faster than 2009 Toyota Sienna. With that said, vehicle weight also plays an important factor in acceleration. 2009 Toyota Sienna weights approximately 867 kg more than 2003 Pontiac Bonneville.
Because 2009 Toyota Sienna is four wheel drive (4WD), it will have significant more traction and grip than 2003 Pontiac Bonneville. In wet, icy, snow, or gravel driving conditions, 2009 Toyota Sienna 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, 2009 Toyota Sienna (332 Nm @ 4700 RPM) has 34 more torque (in Nm) than 2003 Pontiac Bonneville. (298 Nm @ 4000 RPM). This means 2009 Toyota Sienna will have an easier job in driving up hills or pulling heavy equipment than 2003 Pontiac Bonneville.
Compare all specifications:
| 2003 Pontiac Bonneville | 2009 Toyota Sienna | |
| Make | Pontiac | Toyota |
| Model | Bonneville | Sienna |
| Year Released | 2003 | 2009 |
| Body Type | Sedan | Minivan |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 3456 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 275 HP | 266 HP |
| Engine RPM | 5600 RPM | 6200 RPM |
| Torque | 298 Nm | 332 Nm |
| Torque RPM | 4000 RPM | 4700 RPM |
| Engine Compression Ratio | 10.0:1 | 9.8:1 |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1719 kg | 2586 kg |
| Vehicle Length | 5150 mm | 5110 mm |
| Vehicle Width | 1890 mm | 1970 mm |
| Vehicle Height | 1440 mm | 1760 mm |
| Wheelbase Size | 2790 mm | 3040 mm |
| Fuel Tank Capacity | 70 L | 76 L |
