2003 BMW 318 vs. 2007 Cadillac STS
To start off, 2007 Cadillac STS is newer by 4 year(s). Which means there will be less support and parts availability for 2003 BMW 318. In addition, the cost of maintenance, including insurance, on 2003 BMW 318 would be higher. At 3,556 cc (6 cylinders), 2007 Cadillac STS is equipped with a bigger engine. In terms of performance, 2007 Cadillac STS (254 HP @ 6500 RPM) has 113 more horse power than 2003 BMW 318. (141 HP @ 6000 RPM) In normal driving conditions, 2007 Cadillac STS should accelerate faster than 2003 BMW 318. With that said, vehicle weight also plays an important factor in acceleration. 2007 Cadillac STS weights approximately 522 kg more than 2003 BMW 318. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 2003 BMW 318. In wet, icy, snow, or gravel driving conditions, 2007 Cadillac STS 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 Cadillac STS (342 Nm @ 3200 RPM) has 71 more torque (in Nm) than 2003 BMW 318. (271 Nm @ 3750 RPM). This means 2007 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 318.
Compare all specifications:
| 2003 BMW 318 | 2007 Cadillac STS | |
| Make | BMW | Cadillac |
| Model | 318 | STS |
| Year Released | 2003 | 2007 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1994 cc | 3556 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 141 HP | 254 HP |
| Engine RPM | 6000 RPM | 6500 RPM |
| Torque | 271 Nm | 342 Nm |
| Torque RPM | 3750 RPM | 3200 RPM |
| Engine Bore Size | 84 mm | 94 mm |
| Engine Stroke Size | 90 mm | 85.6 mm |
| Engine Compression Ratio | 10.2:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 211 km/hour | 229 km/hour |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1260 kg | 1782 kg |
| Vehicle Length | 4270 mm | 4990 mm |
| Vehicle Width | 1760 mm | 1850 mm |
| Vehicle Height | 1410 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2960 mm |
| Fuel Consumption City | 9.3 L/100km | 13.1 L/100km |
| Fuel Consumption Overall | 6.7 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 63 L | 66 L |
