2005 Mercury Grand Marquis vs. 2006 BMW 630
To start off, 2006 BMW 630 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Mercury Grand Marquis. In addition, the cost of maintenance, including insurance, on 2005 Mercury Grand Marquis would be higher. At 4,605 cc (8 cylinders), 2005 Mercury Grand Marquis is equipped with a bigger engine. In terms of performance, 2006 BMW 630 (254 HP) has 30 more horse power than 2005 Mercury Grand Marquis. (224 HP) In normal driving conditions, 2006 BMW 630 should accelerate faster than 2005 Mercury Grand Marquis. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercury Grand Marquis weights approximately 270 kg more than 2006 BMW 630.
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, 2005 Mercury Grand Marquis (373 Nm) has 73 more torque (in Nm) than 2006 BMW 630. (300 Nm). This means 2005 Mercury Grand Marquis will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 630.
Compare all specifications:
| 2005 Mercury Grand Marquis | 2006 BMW 630 | |
| Make | Mercury | BMW |
| Model | Grand Marquis | 630 |
| Year Released | 2005 | 2006 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4605 cc | 2996 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 224 HP | 254 HP |
| Torque | 373 Nm | 300 Nm |
| Engine Compression Ratio | 9.4:1 | 10.7:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 6 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1836 kg | 1566 kg |
| Vehicle Length | 5390 mm | 4830 mm |
| Vehicle Width | 1990 mm | 1860 mm |
| Vehicle Height | 1450 mm | 1380 mm |
| Wheelbase Size | 2900 mm | 2790 mm |
| Fuel Consumption Overall | 11.2 L/100km | 9.1 L/100km |
| Fuel Tank Capacity | 72 L | 70 L |
