1991 BMW 518 vs. 1999 Mercury Sable
To start off, 1999 Mercury Sable is newer by 8 year(s). Which means there will be less support and parts availability for 1991 BMW 518. In addition, the cost of maintenance, including insurance, on 1991 BMW 518 would be higher. At 2,986 cc (6 cylinders), 1999 Mercury Sable is equipped with a bigger engine. In terms of performance, 1999 Mercury Sable (153 HP @ 4900 RPM) has 39 more horse power than 1991 BMW 518. (114 HP @ 5500 RPM) In normal driving conditions, 1999 Mercury Sable should accelerate faster than 1991 BMW 518. With that said, vehicle weight also plays an important factor in acceleration. 1999 Mercury Sable weights approximately 350 kg more than 1991 BMW 518. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1991 BMW 518 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 1991 BMW 518. However, in wet, icy, snow, or gravel driving conditions, 1999 Mercury Sable, 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, 1999 Mercury Sable (251 Nm @ 3950 RPM) has 86 more torque (in Nm) than 1991 BMW 518. (165 Nm @ 4250 RPM). This means 1999 Mercury Sable will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW 518. 1999 Mercury Sable has automatic transmission and 1991 BMW 518 has manual transmission. 1991 BMW 518 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1999 Mercury Sable will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 BMW 518 | 1999 Mercury Sable | |
| Make | BMW | Mercury |
| Model | 518 | Sable |
| Year Released | 1991 | 1999 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1766 cc | 2986 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 114 HP | 153 HP |
| Engine RPM | 5500 RPM | 4900 RPM |
| Torque | 165 Nm | 251 Nm |
| Torque RPM | 4250 RPM | 3950 RPM |
| Engine Bore Size | 84 mm | 89 mm |
| Engine Stroke Size | 81 mm | 79 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1160 kg | 1510 kg |
| Vehicle Length | 4730 mm | 5100 mm |
| Vehicle Width | 1760 mm | 1860 mm |
| Vehicle Height | 1420 mm | 1420 mm |
| Wheelbase Size | 2770 mm | 2760 mm |
