2003 BMW 730 vs. 2009 Mercury Mariner
To start off, 2009 Mercury Mariner is newer by 6 year(s). Which means there will be less support and parts availability for 2003 BMW 730. In addition, the cost of maintenance, including insurance, on 2003 BMW 730 would be higher. At 2,999 cc (6 cylinders), 2003 BMW 730 is equipped with a bigger engine. In terms of performance, 2003 BMW 730 (228 HP @ 5900 RPM) has 57 more horse power than 2009 Mercury Mariner. (171 HP @ 6000 RPM). In normal driving conditions, 2003 BMW 730 should accelerate faster than 2009 Mercury Mariner. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercury Mariner weights approximately 135 kg more than 2003 BMW 730.
Because 2009 Mercury Mariner is four wheel drive (4WD), it will have significant more traction and grip than 2003 BMW 730. In wet, icy, snow, or gravel driving conditions, 2009 Mercury Mariner 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, 2003 BMW 730 (300 Nm @ 3500 RPM) has 68 more torque (in Nm) than 2009 Mercury Mariner. (232 Nm @ 4500 RPM). This means 2003 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2009 Mercury Mariner.
Compare all specifications:
| 2003 BMW 730 | 2009 Mercury Mariner | |
| Make | BMW | Mercury |
| Model | 730 | Mariner |
| Year Released | 2003 | 2009 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2999 cc | 2488 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 228 HP | 171 HP |
| Engine RPM | 5900 RPM | 6000 RPM |
| Torque | 300 Nm | 232 Nm |
| Torque RPM | 3500 RPM | 4500 RPM |
| Engine Compression Ratio | 10.2:1 | 9.7:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1790 kg | 1925 kg |
| Vehicle Length | 5040 mm | 4460 mm |
| Vehicle Width | 1910 mm | 1810 mm |
| Vehicle Height | 1500 mm | 1730 mm |
| Wheelbase Size | 3000 mm | 2630 mm |
| Fuel Tank Capacity | 63 L | 62 L |
