1999 Opel Omega vs. 2009 GMC Sierra
To start off, 2009 GMC Sierra is newer by 10 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 6,000 cc (8 cylinders), 2009 GMC Sierra is equipped with a bigger engine. In terms of performance, 2009 GMC Sierra (364 HP @ 5400 RPM) has 222 more horse power than 1999 Opel Omega. (142 HP @ 5400 RPM) In normal driving conditions, 2009 GMC Sierra should accelerate faster than 1999 Opel Omega. With that said, vehicle weight also plays an important factor in acceleration. 2009 GMC Sierra weights approximately 994 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 2009 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, 2009 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, 2009 GMC Sierra (506 Nm @ 4400 RPM) has 296 more torque (in Nm) than 1999 Opel Omega. (210 Nm @ 4000 RPM). This means 2009 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Omega. 2009 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. 2009 GMC Sierra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Opel Omega | 2009 GMC Sierra | |
| Make | Opel | GMC |
| Model | Omega | Sierra |
| Year Released | 1999 | 2009 |
| Engine Position | Middle | Front |
| Engine Size | 2198 cc | 6000 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 142 HP | 364 HP |
| Engine RPM | 5400 RPM | 5400 RPM |
| Torque | 210 Nm | 506 Nm |
| Torque RPM | 4000 RPM | 4400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1665 kg | 2659 kg |
| Vehicle Length | 4900 mm | 5710 mm |
| Vehicle Width | 1790 mm | 2040 mm |
| Vehicle Height | 1510 mm | 1940 mm |
| Wheelbase Size | 2740 mm | 3380 mm |
| Fuel Tank Capacity | 75 L | 129 L |
