1987 Buick Regal vs. 1991 Buick Riviera
To start off, 1991 Buick Riviera is newer by 4 year(s). Which means there will be less support and parts availability for 1987 Buick Regal. In addition, the cost of maintenance, including insurance, on 1987 Buick Regal would be higher. At 3,800 cc (6 cylinders), 1991 Buick Riviera is equipped with a bigger engine. In terms of performance, 1987 Buick Regal (276 HP @ 4400 RPM) has 106 more horse power than 1991 Buick Riviera. (170 HP @ 4800 RPM). In normal driving conditions, 1987 Buick Regal should accelerate faster than 1991 Buick Riviera. With that said, vehicle weight also plays an important factor in acceleration. 1987 Buick Regal weights approximately 56 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 1987 Buick Regal 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 1987 Buick Regal. 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, 1987 Buick Regal (489 Nm @ 3000 RPM) has 204 more torque (in Nm) than 1991 Buick Riviera. (285 Nm @ 3200 RPM). This means 1987 Buick Regal will have an easier job in driving up hills or pulling heavy equipment than 1991 Buick Riviera.
Compare all specifications:
| 1987 Buick Regal | 1991 Buick Riviera | |
| Make | Buick | Buick |
| Model | Regal | Riviera |
| Year Released | 1987 | 1991 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3791 cc | 3800 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 276 HP | 170 HP |
| Engine RPM | 4400 RPM | 4800 RPM |
| Torque | 489 Nm | 285 Nm |
| Torque RPM | 3000 RPM | 3200 RPM |
| Engine Bore Size | 96.5 mm | 96.5 mm |
| Engine Stroke Size | 86.4 mm | 86.4 mm |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1576 kg | 1520 kg |
| Vehicle Length | 5100 mm | 5040 mm |
| Vehicle Width | 1920 mm | 1830 mm |
| Vehicle Height | 1390 mm | 1350 mm |
| Wheelbase Size | 2750 mm | 2760 mm |
