2003 BMW Z4 vs. 2006 Cadillac CTS
To start off, 2006 Cadillac CTS is newer by 3 year(s). Which means there will be less support and parts availability for 2003 BMW Z4. In addition, the cost of maintenance, including insurance, on 2003 BMW Z4 would be higher. At 3,556 cc (6 cylinders), 2006 Cadillac CTS is equipped with a bigger engine. In terms of performance, 2006 Cadillac CTS (255 HP @ 6200 RPM) has 28 more horse power than 2003 BMW Z4. (227 HP @ 6000 RPM) In normal driving conditions, 2006 Cadillac CTS should accelerate faster than 2003 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2006 Cadillac CTS weights approximately 302 kg more than 2003 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2006 Cadillac CTS (343 Nm @ 3100 RPM) has 52 more torque (in Nm) than 2003 BMW Z4. (291 Nm @ 3500 RPM). This means 2006 Cadillac CTS will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW Z4.
Compare all specifications:
| 2003 BMW Z4 | 2006 Cadillac CTS | |
| Make | BMW | Cadillac |
| Model | Z4 | CTS |
| Year Released | 2003 | 2006 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2999 cc | 3556 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 227 HP | 255 HP |
| Engine RPM | 6000 RPM | 6200 RPM |
| Torque | 291 Nm | 343 Nm |
| Torque RPM | 3500 RPM | 3100 RPM |
| Engine Bore Size | 84 mm | 94 mm |
| Engine Stroke Size | 90 mm | 86 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1290 kg | 1592 kg |
| Vehicle Length | 4100 mm | 4840 mm |
| Vehicle Width | 1790 mm | 1800 mm |
| Vehicle Height | 1310 mm | 1450 mm |
| Wheelbase Size | 2500 mm | 2890 mm |
| Fuel Tank Capacity | 55 L | 64 L |
