1991 BMW 525 vs. 2013 BMW 7 Series
To start off, 2013 BMW 7 Series is newer by 22 year(s). Which means there will be less support and parts availability for 1991 BMW 525. In addition, the cost of maintenance, including insurance, on 1991 BMW 525 would be higher. At 4,395 cc (8 cylinders), 2013 BMW 7 Series is equipped with a bigger engine. In terms of performance, 2013 BMW 7 Series (439 HP @ 5500 RPM) has 296 more horse power than 1991 BMW 525. (143 HP @ 4800 RPM) In normal driving conditions, 2013 BMW 7 Series should accelerate faster than 1991 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 7 Series weights approximately 592 kg more than 1991 BMW 525. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2013 BMW 7 Series is all wheel drive (AWD), it will have significant more traction and grip than 1991 BMW 525. In wet, icy, snow, or gravel driving conditions, 2013 BMW 7 Series 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, 2013 BMW 7 Series (651 Nm @ 4500 RPM) has 391 more torque (in Nm) than 1991 BMW 525. (260 Nm @ 2200 RPM). This means 2013 BMW 7 Series will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW 525. 2013 BMW 7 Series has automatic transmission and 1991 BMW 525 has manual transmission. 1991 BMW 525 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2013 BMW 7 Series will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 BMW 525 | 2013 BMW 7 Series | |
| Make | BMW | BMW |
| Model | 525 | 7 Series |
| Year Released | 1991 | 2013 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 4395 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 143 HP | 439 HP |
| Engine RPM | 4800 RPM | 5500 RPM |
| Torque | 260 Nm | 651 Nm |
| Torque RPM | 2200 RPM | 4500 RPM |
| Engine Bore Size | 80 mm | 89 mm |
| Engine Stroke Size | 83 mm | 88 mm |
| Engine Compression Ratio | 22.0:1 | 10.0 :1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 199 km/hour | 240 km/hour |
| Acceleration 0-100mph | 11.6 seconds | 4.6 seconds |
| Drive Type | Rear | AWD |
| Transmission Type | Manual | 8-speed automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1560 kg | 2152 kg |
| Vehicle Length | 4730 mm | 5074 mm |
| Vehicle Width | 1760 mm | 2134 mm |
| Vehicle Height | 1420 mm | 1471 mm |
| Wheelbase Size | 2770 mm | 3070 mm |
| Fuel Tank Capacity | 80 L | 80 L |
