2003 Mazda Roadster vs. 2007 Subaru Impreza
To start off, 2007 Subaru Impreza 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 1,994 cc (4 cylinders), 2007 Subaru Impreza is equipped with a bigger engine. In terms of performance, 2007 Subaru Impreza (158 HP @ 6400 RPM) has 10 more horse power than 2003 Mazda Roadster. (148 HP @ 7000 RPM) In normal driving conditions, 2007 Subaru Impreza should accelerate faster than 2003 Mazda Roadster. With that said, vehicle weight also plays an important factor in acceleration. 2007 Subaru Impreza weights approximately 265 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.
Because 2007 Subaru Impreza is four wheel drive (4WD), it will have significant more traction and grip than 2003 Mazda Roadster. In wet, icy, snow, or gravel driving conditions, 2007 Subaru Impreza 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, 2007 Subaru Impreza (186 Nm @ 3600 RPM) has 19 more torque (in Nm) than 2003 Mazda Roadster. (167 Nm @ 5500 RPM). This means 2007 Subaru Impreza will have an easier job in driving up hills or pulling heavy equipment than 2003 Mazda Roadster. 2003 Mazda Roadster has automatic transmission and 2007 Subaru Impreza has manual transmission. 2007 Subaru Impreza will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Mazda Roadster will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Mazda Roadster | 2007 Subaru Impreza | |
| Make | Mazda | Subaru |
| Model | Roadster | Impreza |
| Year Released | 2003 | 2007 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1838 cc | 1994 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 148 HP | 158 HP |
| Engine RPM | 7000 RPM | 6400 RPM |
| Torque | 167 Nm | 186 Nm |
| Torque RPM | 5500 RPM | 3600 RPM |
| Engine Bore Size | 83 mm | 92 mm |
| Engine Stroke Size | 85 mm | 75 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1080 kg | 1345 kg |
| Vehicle Length | 3960 mm | 4450 mm |
| Vehicle Width | 1690 mm | 1700 mm |
| Vehicle Height | 1240 mm | 1490 mm |
| Wheelbase Size | 2270 mm | 2530 mm |
| Fuel Tank Capacity | 48 L | 60 L |
