2007 Cadillac STS vs. 2003 Chevrolet Avalanche
To start off, 2007 Cadillac STS is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Chevrolet Avalanche. In addition, the cost of maintenance, including insurance, on 2003 Chevrolet Avalanche would be higher. At 5,325 cc (8 cylinders), 2003 Chevrolet Avalanche is equipped with a bigger engine. In terms of performance, 2007 Cadillac STS (321 HP @ 6400 RPM) has 39 more horse power than 2003 Chevrolet Avalanche. (282 HP @ 5200 RPM). In normal driving conditions, 2007 Cadillac STS should accelerate faster than 2003 Chevrolet Avalanche. With that said, vehicle weight also plays an important factor in acceleration. 2003 Chevrolet Avalanche weights approximately 545 kg more than 2007 Cadillac STS.
Because 2003 Chevrolet Avalanche is four wheel drive (4WD), it will have significant more traction and grip than 2007 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2003 Chevrolet Avalanche 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, 2003 Chevrolet Avalanche (440 Nm @ 4000 RPM) has 13 more torque (in Nm) than 2007 Cadillac STS. (427 Nm @ 4400 RPM). This means 2003 Chevrolet Avalanche will have an easier job in driving up hills or pulling heavy equipment than 2007 Cadillac STS.
Compare all specifications:
| 2007 Cadillac STS | 2003 Chevrolet Avalanche | |
| Make | Cadillac | Chevrolet |
| Model | STS | Avalanche |
| Year Released | 2007 | 2003 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 5325 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 321 HP | 282 HP |
| Engine RPM | 6400 RPM | 5200 RPM |
| Torque | 427 Nm | 440 Nm |
| Torque RPM | 4400 RPM | 4000 RPM |
| Engine Bore Size | 93 mm | 96 mm |
| Engine Stroke Size | 84 mm | 92 mm |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1635 kg | 2180 kg |
| Vehicle Length | 4990 mm | 5640 mm |
| Vehicle Width | 1850 mm | 2040 mm |
| Vehicle Height | 1470 mm | 1870 mm |
| Wheelbase Size | 2960 mm | 3310 mm |
| Fuel Tank Capacity | 64 L | 117 L |
