2007 GMC Sierra vs. 1999 Opel Omega
To start off, 2007 GMC Sierra is newer by 8 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 4,802 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (295 HP @ 5600 RPM) has 153 more horse power than 1999 Opel Omega. (142 HP @ 5400 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 1999 Opel Omega. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 652 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 2007 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, 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 (414 Nm @ 4800 RPM) has 204 more torque (in Nm) than 1999 Opel Omega. (210 Nm @ 4000 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Omega. 2007 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. 2007 GMC Sierra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 GMC Sierra | 1999 Opel Omega | |
| Make | GMC | Opel |
| Model | Sierra | Omega |
| Year Released | 2007 | 1999 |
| Engine Position | Front | Middle |
| Engine Size | 4802 cc | 2198 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 295 HP | 142 HP |
| Engine RPM | 5600 RPM | 5400 RPM |
| Torque | 414 Nm | 210 Nm |
| Torque RPM | 4800 RPM | 4000 RPM |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 2317 kg | 1665 kg |
| Vehicle Length | 5710 mm | 4900 mm |
| Vehicle Width | 2040 mm | 1790 mm |
| Vehicle Height | 1870 mm | 1510 mm |
| Wheelbase Size | 3380 mm | 2740 mm |
| Fuel Tank Capacity | 129 L | 75 L |
