1999 Infiniti QX4 vs. 2003 Mazda Roadster
To start off, 2003 Mazda Roadster is newer by 4 year(s). Which means there will be less support and parts availability for 1999 Infiniti QX4. In addition, the cost of maintenance, including insurance, on 1999 Infiniti QX4 would be higher. At 3,498 cc (6 cylinders), 1999 Infiniti QX4 is equipped with a bigger engine. In terms of performance, 1999 Infiniti QX4 (238 HP @ 6000 RPM) has 90 more horse power than 2003 Mazda Roadster. (148 HP @ 7000 RPM). In normal driving conditions, 1999 Infiniti QX4 should accelerate faster than 2003 Mazda Roadster. With that said, vehicle weight also plays an important factor in acceleration. 1999 Infiniti QX4 weights approximately 882 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 1999 Infiniti QX4 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, 1999 Infiniti QX4 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, 1999 Infiniti QX4 (359 Nm @ 3200 RPM) has 192 more torque (in Nm) than 2003 Mazda Roadster. (167 Nm @ 5500 RPM). This means 1999 Infiniti QX4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Mazda Roadster.
Compare all specifications:
| 1999 Infiniti QX4 | 2003 Mazda Roadster | |
| Make | Infiniti | Mazda |
| Model | QX4 | Roadster |
| Year Released | 1999 | 2003 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3498 cc | 1838 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 238 HP | 148 HP |
| Engine RPM | 6000 RPM | 7000 RPM |
| Torque | 359 Nm | 167 Nm |
| Torque RPM | 3200 RPM | 5500 RPM |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1962 kg | 1080 kg |
| Vehicle Length | 4660 mm | 3960 mm |
| Vehicle Width | 1850 mm | 1690 mm |
| Vehicle Height | 1800 mm | 1240 mm |
| Wheelbase Size | 2710 mm | 2270 mm |
