2007 GMC Sierra vs. 2008 Mazda RX-8
To start off, 2008 Mazda RX-8 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2007 GMC Sierra would be higher. At 5,357 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (315 HP @ 5200 RPM) has 207 more horse power than 2008 Mazda RX-8. (108 HP @ 8200 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 2008 Mazda RX-8.
Because 2007 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2008 Mazda RX-8. In wet, icy, snow, or gravel driving conditions, 2007 GMC Sierra 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 GMC Sierra (458 Nm @ 4400 RPM) has 318 more torque (in Nm) than 2008 Mazda RX-8. (140 Nm @ 5500 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2008 Mazda RX-8.
Compare all specifications:
| 2007 GMC Sierra | 2008 Mazda RX-8 | |
| Make | GMC | Mazda |
| Model | Sierra | RX-8 |
| Year Released | 2007 | 2008 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5357 cc | 1308 cc |
| Engine Type | V | dual-disk rotary |
| Horse Power | 315 HP | 108 HP |
| Engine RPM | 5200 RPM | 8200 RPM |
| Torque | 458 Nm | 140 Nm |
| Torque RPM | 4400 RPM | 5500 RPM |
| Engine Compression Ratio | 9.4:1 | 10.0:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 6 seats | 4 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 6320 mm | 4440 mm |
| Vehicle Width | 2040 mm | 1780 mm |
| Vehicle Height | 1880 mm | 1350 mm |
| Wheelbase Size | 4010 mm | 2710 mm |
| Fuel Consumption Overall | 13.1 L/100km | 110 L/100km |
| Fuel Tank Capacity | 129 L | 61 L |
