1981 BMW 745 vs. 1991 Buick Riviera
To start off, 1991 Buick Riviera is newer by 10 year(s). Which means there will be less support and parts availability for 1981 BMW 745. In addition, the cost of maintenance, including insurance, on 1981 BMW 745 would be higher. At 3,800 cc (6 cylinders), 1991 Buick Riviera is equipped with a bigger engine. In terms of performance, 1981 BMW 745 (252 HP @ 5200 RPM) has 82 more horse power than 1991 Buick Riviera. (170 HP @ 4800 RPM). In normal driving conditions, 1981 BMW 745 should accelerate faster than 1991 Buick Riviera. With that said, vehicle weight also plays an important factor in acceleration. 1981 BMW 745 weights approximately 70 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 1981 BMW 745 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 1981 BMW 745. 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, 1981 BMW 745 (380 Nm @ 2200 RPM) has 95 more torque (in Nm) than 1991 Buick Riviera. (285 Nm @ 3200 RPM). This means 1981 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 1991 Buick Riviera. 1991 Buick Riviera has automatic transmission and 1981 BMW 745 has manual transmission. 1981 BMW 745 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1991 Buick Riviera will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1981 BMW 745 | 1991 Buick Riviera | |
| Make | BMW | Buick |
| Model | 745 | Riviera |
| Year Released | 1981 | 1991 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3430 cc | 3800 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 252 HP | 170 HP |
| Engine RPM | 5200 RPM | 4800 RPM |
| Torque | 380 Nm | 285 Nm |
| Torque RPM | 2200 RPM | 3200 RPM |
| Engine Bore Size | 92 mm | 96.5 mm |
| Engine Stroke Size | 86 mm | 86.4 mm |
| Engine Compression Ratio | 8.0:1 | 8.5:1 |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1590 kg | 1520 kg |
| Vehicle Length | 4870 mm | 5040 mm |
| Vehicle Width | 1810 mm | 1830 mm |
| Vehicle Height | 1440 mm | 1350 mm |
| Wheelbase Size | 2800 mm | 2760 mm |
