2004 AC Aceca vs. 2007 Cadillac STS
To start off, 2007 Cadillac STS is newer by 3 year(s). Which means there will be less support and parts availability for 2004 AC Aceca. In addition, the cost of maintenance, including insurance, on 2004 AC Aceca would be higher. At 4,565 cc (8 cylinders), 2007 Cadillac STS is equipped with a bigger engine. In terms of performance, 2004 AC Aceca (346 HP @ 6500 RPM) has 25 more horse power than 2007 Cadillac STS. (321 HP @ 6400 RPM). In normal driving conditions, 2004 AC Aceca should accelerate faster than 2007 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2007 Cadillac STS weights approximately 25 kg more than 2004 AC Aceca.
Because 2004 AC Aceca 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 2004 AC Aceca. However, in wet, icy, snow, or gravel driving conditions, 2007 Cadillac STS, 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 27 more torque (in Nm) than 2004 AC Aceca. (400 Nm @ 4000 RPM). This means 2007 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2004 AC Aceca.
Compare all specifications:
| 2004 AC Aceca | 2007 Cadillac STS | |
| Make | AC | Cadillac |
| Model | Aceca | STS |
| Year Released | 2004 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 3504 cc | 4565 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 346 HP | 321 HP |
| Engine RPM | 6500 RPM | 6400 RPM |
| Torque | 400 Nm | 427 Nm |
| Torque RPM | 4000 RPM | 4400 RPM |
| Engine Bore Size | 83 mm | 93 mm |
| Engine Stroke Size | 81 mm | 84 mm |
| Engine Compression Ratio | 8.0:1 | 10.5:1 |
| Drive Type | Rear | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1610 kg | 1635 kg |
| Vehicle Length | 4640 mm | 4990 mm |
| Vehicle Width | 1860 mm | 1850 mm |
| Vehicle Height | 1350 mm | 1470 mm |
| Wheelbase Size | 2300 mm | 2960 mm |
| Fuel Tank Capacity | 90 L | 64 L |
