2006 GMC Sierra vs. 2005 Mazda RX-8
To start off, 2006 GMC Sierra is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Mazda RX-8. In addition, the cost of maintenance, including insurance, on 2005 Mazda RX-8 would be higher. At 5,965 cc (8 cylinders), 2006 GMC Sierra is equipped with a bigger engine. In terms of performance, 2006 GMC Sierra (300 HP @ 4400 RPM) has 111 more horse power than 2005 Mazda RX-8. (189 HP @ 7000 RPM). In normal driving conditions, 2006 GMC Sierra should accelerate faster than 2005 Mazda RX-8. With that said, vehicle weight also plays an important factor in acceleration. 2006 GMC Sierra weights approximately 1288 kg more than 2005 Mazda RX-8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2005 Mazda RX-8. In wet, icy, snow, or gravel driving conditions, 2006 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, 2006 GMC Sierra (488 Nm @ 4000 RPM) has 268 more torque (in Nm) than 2005 Mazda RX-8. (220 Nm @ 5000 RPM). This means 2006 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2005 Mazda RX-8.
Compare all specifications:
| 2006 GMC Sierra | 2005 Mazda RX-8 | |
| Make | GMC | Mazda |
| Model | Sierra | RX-8 |
| Year Released | 2006 | 2005 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 2614 cc |
| Engine Type | V | dual-disk rotary |
| Horse Power | 300 HP | 189 HP |
| Engine RPM | 4400 RPM | 7000 RPM |
| Torque | 488 Nm | 220 Nm |
| Torque RPM | 4000 RPM | 5000 RPM |
| Drive Type | 4WD | Rear |
| Number of Seats | 3 seats | 4 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 2678 kg | 1390 kg |
| Vehicle Length | 5710 mm | 4430 mm |
| Vehicle Width | 2450 mm | 1780 mm |
| Vehicle Height | 1950 mm | 1350 mm |
| Wheelbase Size | 3380 mm | 2710 mm |
| Fuel Consumption Overall | 13.1 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 129 L | 61 L |
