1999 Vauxhall Omega vs. 2011 GMC Sierra
To start off, 2011 GMC Sierra is newer by 12 year(s). Which means there will be less support and parts availability for 1999 Vauxhall Omega. In addition, the cost of maintenance, including insurance, on 1999 Vauxhall Omega would be higher. At 5,999 cc (8 cylinders), 2011 GMC Sierra is equipped with a bigger engine. In terms of performance, 2011 GMC Sierra (353 HP @ 5400 RPM) has 224 more horse power than 1999 Vauxhall Omega. (129 HP @ 4500 RPM) In normal driving conditions, 2011 GMC Sierra should accelerate faster than 1999 Vauxhall Omega. With that said, vehicle weight also plays an important factor in acceleration. 2011 GMC Sierra weights approximately 954 kg more than 1999 Vauxhall Omega. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1999 Vauxhall Omega. In wet, icy, snow, or gravel driving conditions, 2011 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, 2011 GMC Sierra (506 Nm @ 4400 RPM) has 256 more torque (in Nm) than 1999 Vauxhall Omega. (250 Nm @ 2200 RPM). This means 2011 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1999 Vauxhall Omega. 2011 GMC Sierra has automatic transmission and 1999 Vauxhall Omega has manual transmission. 1999 Vauxhall Omega will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2011 GMC Sierra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Vauxhall Omega | 2011 GMC Sierra | |
| Make | Vauxhall | GMC |
| Model | Omega | Sierra |
| Year Released | 1999 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 5999 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 129 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 | Manual | Automatic |
| Vehicle Weight | 1710 kg | 2664 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 |
