1979 BMW 628 vs. 1998 Mercury Grand Marquis
To start off, 1998 Mercury Grand Marquis is newer by 19 year(s). Which means there will be less support and parts availability for 1979 BMW 628. In addition, the cost of maintenance, including insurance, on 1979 BMW 628 would be higher. At 4,603 cc (8 cylinders), 1998 Mercury Grand Marquis is equipped with a bigger engine. In terms of performance, 1998 Mercury Grand Marquis (223 HP @ 4500 RPM) has 42 more horse power than 1979 BMW 628. (181 HP @ 6000 RPM) In normal driving conditions, 1998 Mercury Grand Marquis should accelerate faster than 1979 BMW 628. With that said, vehicle weight also plays an important factor in acceleration. 1998 Mercury Grand Marquis weights approximately 262 kg more than 1979 BMW 628. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 1998 Mercury Grand Marquis (372 Nm @ 3000 RPM) has 132 more torque (in Nm) than 1979 BMW 628. (240 Nm @ 4000 RPM). This means 1998 Mercury Grand Marquis will have an easier job in driving up hills or pulling heavy equipment than 1979 BMW 628. 1998 Mercury Grand Marquis has automatic transmission and 1979 BMW 628 has manual transmission. 1979 BMW 628 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1998 Mercury Grand Marquis will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1979 BMW 628 | 1998 Mercury Grand Marquis | |
| Make | BMW | Mercury |
| Model | 628 | Grand Marquis |
| Year Released | 1979 | 1998 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2788 cc | 4603 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 181 HP | 223 HP |
| Engine RPM | 6000 RPM | 4500 RPM |
| Torque | 240 Nm | 372 Nm |
| Torque RPM | 4000 RPM | 3000 RPM |
| Engine Bore Size | 86.1 mm | 90.2 mm |
| Engine Stroke Size | 80 mm | 90 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1470 kg | 1732 kg |
| Vehicle Length | 4760 mm | 5390 mm |
| Vehicle Width | 1730 mm | 2000 mm |
| Vehicle Height | 1370 mm | 1450 mm |
| Wheelbase Size | 2640 mm | 2920 mm |
| Fuel Tank Capacity | 70 L | 68 L |
