2007 Cadillac STS vs. 2005 Opel Zafira
To start off, 2007 Cadillac STS is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Opel Zafira. In addition, the cost of maintenance, including insurance, on 2005 Opel Zafira would be higher. At 4,565 cc (8 cylinders), 2007 Cadillac STS is equipped with a bigger engine. In terms of performance, 2007 Cadillac STS (320 HP @ 6400 RPM) has 197 more horse power than 2005 Opel Zafira. (123 HP @ 5600 RPM). In normal driving conditions, 2007 Cadillac STS should accelerate faster than 2005 Opel Zafira. With that said, vehicle weight also plays an important factor in acceleration. 2007 Cadillac STS weights approximately 121 kg more than 2005 Opel Zafira. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Cadillac STS 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 2007 Cadillac STS. However, in wet, icy, snow, or gravel driving conditions, 2005 Opel Zafira, 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, 2007 Cadillac STS (427 Nm @ 4400 RPM) has 257 more torque (in Nm) than 2005 Opel Zafira. (170 Nm @ 3800 RPM). This means 2007 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Zafira.
Compare all specifications:
| 2007 Cadillac STS | 2005 Opel Zafira | |
| Make | Cadillac | Opel |
| Model | STS | Zafira |
| Year Released | 2007 | 2005 |
| Body Type | Sedan | Minivan |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 1796 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 320 HP | 123 HP |
| Engine RPM | 6400 RPM | 5600 RPM |
| Torque | 427 Nm | 170 Nm |
| Torque RPM | 4400 RPM | 3800 RPM |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1566 kg | 1445 kg |
| Vehicle Length | 4990 mm | 4320 mm |
| Vehicle Width | 1850 mm | 1750 mm |
| Vehicle Height | 1470 mm | 1640 mm |
| Wheelbase Size | 2960 mm | 2610 mm |
| Fuel Tank Capacity | 64 L | 58 L |
