2003 Mazda Roadster vs. 2007 Mercedes-Benz CLS
To start off, 2007 Mercedes-Benz CLS is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Mazda Roadster. In addition, the cost of maintenance, including insurance, on 2003 Mazda Roadster would be higher. At 5,439 cc (8 cylinders), 2007 Mercedes-Benz CLS is equipped with a bigger engine. In terms of performance, 2007 Mercedes-Benz CLS (469 HP @ 6100 RPM) has 321 more horse power than 2003 Mazda Roadster. (148 HP @ 7000 RPM) In normal driving conditions, 2007 Mercedes-Benz CLS should accelerate faster than 2003 Mazda Roadster. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercedes-Benz CLS weights approximately 840 kg more than 2003 Mazda Roadster. 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, 2007 Mercedes-Benz CLS (700 Nm @ 2650 RPM) has 533 more torque (in Nm) than 2003 Mazda Roadster. (167 Nm @ 5500 RPM). This means 2007 Mercedes-Benz CLS will have an easier job in driving up hills or pulling heavy equipment than 2003 Mazda Roadster.
Compare all specifications:
| 2003 Mazda Roadster | 2007 Mercedes-Benz CLS | |
| Make | Mazda | Mercedes-Benz |
| Model | Roadster | CLS |
| Year Released | 2003 | 2007 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1838 cc | 5439 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 148 HP | 469 HP |
| Engine RPM | 7000 RPM | 6100 RPM |
| Torque | 167 Nm | 700 Nm |
| Torque RPM | 5500 RPM | 2650 RPM |
| Engine Compression Ratio | 10.5:1 | 9.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1080 kg | 1920 kg |
| Vehicle Length | 3960 mm | 4920 mm |
| Vehicle Width | 1690 mm | 1880 mm |
| Vehicle Height | 1240 mm | 1400 mm |
| Wheelbase Size | 2270 mm | 2860 mm |
| Fuel Tank Capacity | 48 L | 80 L |
