2009 Ford Flex vs. 2011 BMW 520
To start off, 2011 BMW 520 is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Ford Flex. In addition, the cost of maintenance, including insurance, on 2009 Ford Flex would be higher. At 3,496 cc (6 cylinders), 2009 Ford Flex is equipped with a bigger engine. In terms of performance, 2009 Ford Flex (262 HP @ 6250 RPM) has 80 more horse power than 2011 BMW 520. (182 HP @ 5000 RPM). In normal driving conditions, 2009 Ford Flex should accelerate faster than 2011 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW 520 weights approximately 824 kg more than 2009 Ford Flex.
Because 2009 Ford Flex is four wheel drive (4WD), it will have significant more traction and grip than 2011 BMW 520. In wet, icy, snow, or gravel driving conditions, 2009 Ford Flex 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 Ford Flex (336 Nm @ 4500 RPM) has 66 more torque (in Nm) than 2011 BMW 520. (270 Nm @ 4500 RPM). This means 2009 Ford Flex will have an easier job in driving up hills or pulling heavy equipment than 2011 BMW 520.
Compare all specifications:
| 2009 Ford Flex | 2011 BMW 520 | |
| Make | Ford | BMW |
| Model | Flex | 520 |
| Year Released | 2009 | 2011 |
| Body Type | Crossover | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3496 cc | 1997 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 262 HP | 182 HP |
| Engine RPM | 6250 RPM | 5000 RPM |
| Torque | 336 Nm | 270 Nm |
| Torque RPM | 4500 RPM | 4500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | 8-speed shiftable automatic |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 966 kg | 1790 kg |
| Vehicle Length | 5130 mm | 4907 mm |
| Vehicle Width | 1930 mm | 1860 mm |
| Vehicle Height | 1730 mm | 1462 mm |
| Wheelbase Size | 3000 mm | 2968 mm |
| Fuel Tank Capacity | 70 L | 70 L |
