2008 Cadillac STS vs. 2005 Chevrolet Impala
To start off, 2008 Cadillac STS is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Chevrolet Impala. In addition, the cost of maintenance, including insurance, on 2005 Chevrolet Impala would be higher. At 4,376 cc (8 cylinders), 2008 Cadillac STS is equipped with a bigger engine. In terms of performance, 2008 Cadillac STS (469 HP @ 6400 RPM) has 229 more horse power than 2005 Chevrolet Impala. (240 HP @ 5600 RPM). In normal driving conditions, 2008 Cadillac STS should accelerate faster than 2005 Chevrolet Impala. With that said, vehicle weight also plays an important factor in acceleration. 2005 Chevrolet Impala weights approximately 57 kg more than 2008 Cadillac STS.
Because 2008 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 2005 Chevrolet Impala. In wet, icy, snow, or gravel driving conditions, 2008 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, 2008 Cadillac STS (595 Nm) has 215 more torque (in Nm) than 2005 Chevrolet Impala. (380 Nm). This means 2008 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2005 Chevrolet Impala.
Compare all specifications:
| 2008 Cadillac STS | 2005 Chevrolet Impala | |
| Make | Cadillac | Chevrolet |
| Model | STS | Impala |
| Year Released | 2008 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4376 cc | 3786 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 469 HP | 240 HP |
| Engine RPM | 6400 RPM | 5600 RPM |
| Torque | 595 Nm | 380 Nm |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1560 kg | 1617 kg |
| Vehicle Length | 5030 mm | 5090 mm |
| Vehicle Width | 1850 mm | 1860 mm |
| Vehicle Height | 1480 mm | 1460 mm |
| Wheelbase Size | 2960 mm | 2830 mm |
| Fuel Consumption Highway | 12.4 L/100km | 8.6 L/100km |
| Fuel Consumption City | 18.1 L/100km | 13.2 L/100km |
| Fuel Consumption Overall | 15.7 L/100km | 10.8 L/100km |
| Fuel Tank Capacity | 64 L | 64 L |
