2006 Rover 45 vs. 2012 BMW 550
To start off, 2012 BMW 550 is newer by 6 year(s). Which means there will be less support and parts availability for 2006 Rover 45. In addition, the cost of maintenance, including insurance, on 2006 Rover 45 would be higher. At 4,400 cc (8 cylinders), 2012 BMW 550 is equipped with a bigger engine. In terms of performance, 2012 BMW 550 (400 HP @ 5500 RPM) has 252 more horse power than 2006 Rover 45. (148 HP @ 6500 RPM) In normal driving conditions, 2012 BMW 550 should accelerate faster than 2006 Rover 45. With that said, vehicle weight also plays an important factor in acceleration. 2012 BMW 550 weights approximately 640 kg more than 2006 Rover 45. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2012 BMW 550 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2012 BMW 550. However, in wet, icy, snow, or gravel driving conditions, 2006 Rover 45, being front wheel drive (FWD), will offer much better control with better grip. 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 BMW 550 (609 Nm @ 1750 RPM) has 424 more torque (in Nm) than 2006 Rover 45. (185 Nm @ 4000 RPM). This means 2012 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2006 Rover 45. 2006 Rover 45 has automatic transmission and 2012 BMW 550 has manual transmission. 2012 BMW 550 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Rover 45 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Rover 45 | 2012 BMW 550 | |
| Make | Rover | BMW |
| Model | 45 | 550 |
| Year Released | 2006 | 2012 |
| Engine Position | Front | Front |
| Engine Size | 1997 cc | 4400 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 400 HP |
| Engine RPM | 6500 RPM | 5500 RPM |
| Torque | 185 Nm | 609 Nm |
| Torque RPM | 4000 RPM | 1750 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | 6-speed manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1340 kg | 1980 kg |
| Vehicle Length | 4370 mm | 4899 mm |
| Vehicle Width | 1700 mm | 1860 mm |
| Vehicle Height | 1400 mm | 1464 mm |
| Wheelbase Size | 2630 mm | 2968 mm |
| Fuel Tank Capacity | 55 L | 70 L |
