1999 Opel Omega vs. 2012 GMC Sierra
To start off, 2012 GMC Sierra is newer by 13 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 5,999 cc (8 cylinders), 2012 GMC Sierra is equipped with a bigger engine. In terms of performance, 2012 GMC Sierra (353 HP @ 5400 RPM) has 223 more horse power than 1999 Opel Omega. (130 HP @ 4500 RPM) In normal driving conditions, 2012 GMC Sierra should accelerate faster than 1999 Opel Omega. With that said, vehicle weight also plays an important factor in acceleration. 2012 GMC Sierra weights approximately 1286 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 2012 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, 2012 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, 2012 GMC Sierra (506 Nm @ 4400 RPM) has 256 more torque (in Nm) than 1999 Opel Omega. (250 Nm @ 2200 RPM). This means 2012 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Omega.
Compare all specifications:
| 1999 Opel Omega | 2012 GMC Sierra | |
| Make | Opel | GMC |
| Model | Omega | Sierra |
| Year Released | 1999 | 2012 |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 5999 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 130 HP | 353 HP |
| Engine RPM | 4500 RPM | 5400 RPM |
| Torque | 250 Nm | 506 Nm |
| Torque RPM | 2200 RPM | 4400 RPM |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 855 kg | 2141 kg |
| Vehicle Length | 4900 mm | 6580 mm |
| Vehicle Width | 1780 mm | 2040 mm |
| Vehicle Height | 1460 mm | 1960 mm |
| Wheelbase Size | 2640 mm | 4250 mm |
| Fuel Tank Capacity | 75 L | 129 L |
