1991 Buick Riviera vs. 2009 BMW 525
To start off, 2009 BMW 525 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Buick Riviera. In addition, the cost of maintenance, including insurance, on 1991 Buick Riviera would be higher. At 3,800 cc (6 cylinders), 1991 Buick Riviera is equipped with a bigger engine. In terms of performance, 2009 BMW 525 (215 HP @ 6500 RPM) has 45 more horse power than 1991 Buick Riviera. (170 HP @ 4800 RPM) In normal driving conditions, 2009 BMW 525 should accelerate faster than 1991 Buick Riviera. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 525 weights approximately 166 kg more than 1991 Buick Riviera. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW 525 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 2009 BMW 525. However, in wet, icy, snow, or gravel driving conditions, 1991 Buick Riviera, 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, 1991 Buick Riviera (285 Nm @ 3200 RPM) has 35 more torque (in Nm) than 2009 BMW 525. (250 Nm @ 2750 RPM). This means 1991 Buick Riviera will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 525.
Compare all specifications:
| 1991 Buick Riviera | 2009 BMW 525 | |
| Make | Buick | BMW |
| Model | Riviera | 525 |
| Year Released | 1991 | 2009 |
| Body Type | Coupe | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3800 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 170 HP | 215 HP |
| Engine RPM | 4800 RPM | 6500 RPM |
| Torque | 285 Nm | 250 Nm |
| Torque RPM | 3200 RPM | 2750 RPM |
| Engine Bore Size | 96.5 mm | 78.8 mm |
| Engine Stroke Size | 86.4 mm | 82 mm |
| Engine Compression Ratio | 8.5:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1520 kg | 1686 kg |
| Vehicle Length | 5040 mm | 4850 mm |
| Vehicle Width | 1830 mm | 1850 mm |
| Vehicle Height | 1350 mm | 1500 mm |
| Wheelbase Size | 2760 mm | 2840 mm |
