2005 Cadillac STS vs. 2007 Volvo S40
To start off, 2007 Volvo S40 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2005 Cadillac STS would be higher. At 4,565 cc (8 cylinders), 2005 Cadillac STS is equipped with a bigger engine. In terms of performance, 2005 Cadillac STS (321 HP @ 6400 RPM) has 104 more horse power than 2007 Volvo S40. (217 HP @ 5000 RPM). In normal driving conditions, 2005 Cadillac STS should accelerate faster than 2007 Volvo S40. With that said, vehicle weight also plays an important factor in acceleration. 2005 Cadillac STS weights approximately 277 kg more than 2007 Volvo S40. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Volvo S40 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2007 Volvo S40 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, 2005 Cadillac STS (427 Nm @ 4400 RPM) has 107 more torque (in Nm) than 2007 Volvo S40. (320 Nm @ 1500 RPM). This means 2005 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2007 Volvo S40. 2005 Cadillac STS has automatic transmission and 2007 Volvo S40 has manual transmission. 2007 Volvo S40 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Cadillac STS | 2007 Volvo S40 | |
| Make | Cadillac | Volvo |
| Model | STS | S40 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 2519 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 321 HP | 217 HP |
| Engine RPM | 6400 RPM | 5000 RPM |
| Torque | 427 Nm | 320 Nm |
| Torque RPM | 4400 RPM | 1500 RPM |
| Engine Bore Size | 93.1 mm | 83 mm |
| Engine Stroke Size | 84 mm | 93.2 mm |
| Engine Compression Ratio | 10.5:1 | 9.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Acceleration 0-100mph | 6.2 seconds | 7.1 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1817 kg | 1540 kg |
| Vehicle Length | 4990 mm | 4470 mm |
| Vehicle Width | 1850 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1460 mm |
| Wheelbase Size | 2960 mm | 2550 mm |
| Fuel Consumption Highway | 9.1 L/100km | 8.1 L/100km |
| Fuel Consumption City | 13.8 L/100km | 11.8 L/100km |
| Fuel Consumption Overall | 11.8 L/100km | 9.5 L/100km |
| Fuel Tank Capacity | 66 L | 58 L |
