2005 GMC Sierra vs. 1999 Opel Omega
To start off, 2005 GMC Sierra is newer by 6 year(s). Which means there will be less support and parts availability for 1999 Opel Omega. In addition, the cost of maintenance, including insurance, on 1999 Opel Omega would be higher. At 5,965 cc (8 cylinders), 2005 GMC Sierra is equipped with a bigger engine. In terms of performance, 2005 GMC Sierra (321 HP @ 5000 RPM) has 113 more horse power than 1999 Opel Omega. (208 HP @ 6200 RPM). In normal driving conditions, 2005 GMC Sierra should accelerate faster than 1999 Opel Omega. With that said, vehicle weight also plays an important factor in acceleration. 2005 GMC Sierra weights approximately 554 kg more than 1999 Opel Omega. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1999 Opel Omega. In wet, icy, snow, or gravel driving conditions, 2005 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, 2005 GMC Sierra (370 Nm @ 4000 RPM) has 100 more torque (in Nm) than 1999 Opel Omega. (270 Nm @ 3600 RPM). This means 2005 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Omega. 2005 GMC Sierra has automatic transmission and 1999 Opel Omega has manual transmission. 1999 Opel Omega will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 GMC Sierra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 GMC Sierra | 1999 Opel Omega | |
| Make | GMC | Opel |
| Model | Sierra | Omega |
| Year Released | 2005 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 2962 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 321 HP | 208 HP |
| Engine RPM | 5000 RPM | 6200 RPM |
| Torque | 370 Nm | 270 Nm |
| Torque RPM | 4000 RPM | 3600 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 6 seats | 5 seats |
| Vehicle Weight | 2270 kg | 1716 kg |
| Vehicle Length | 5790 mm | 4900 mm |
| Vehicle Width | 2000 mm | 1790 mm |
| Vehicle Height | 1850 mm | 1510 mm |
| Wheelbase Size | 3650 mm | 2740 mm |
