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 5,300 cc (8 cylinders), 2012 GMC Sierra is equipped with a bigger engine. In terms of performance, 2012 GMC Sierra (315 HP @ 5200 RPM) has 192 more horse power than 1999 Opel Omega. (123 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 576 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.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 (454 Nm @ 4000 RPM) has 203 more torque (in Nm) than 1999 Opel Omega. (251 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. 2012 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. 2012 GMC Sierra will be easier to drive especially in heavy traffic.
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 | 2498 cc | 5300 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 123 HP | 315 HP |
| Engine RPM | 4500 RPM | 5200 RPM |
| Torque | 251 Nm | 454 Nm |
| Torque RPM | 2200 RPM | 4000 RPM |
| Fuel Type | Diesel | Flex Fuel |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | 6-speed shiftable automatic |
| Vehicle Weight | 1735 kg | 2311 kg |
| Vehicle Length | 4900 mm | 5847 mm |
| Vehicle Width | 1780 mm | 2032 mm |
| Wheelbase Size | 2640 mm | 3645 mm |
| Fuel Tank Capacity | 75 L | 98 L |
