1991 Buick Riviera vs. 1980 Mazda 929
To start off, 1991 Buick Riviera is newer by 11 year(s). Which means there will be less support and parts availability for 1980 Mazda 929. In addition, the cost of maintenance, including insurance, on 1980 Mazda 929 would be higher. At 3,800 cc (6 cylinders), 1991 Buick Riviera is equipped with a bigger engine. In terms of performance, 1991 Buick Riviera (170 HP @ 4800 RPM) has 87 more horse power than 1980 Mazda 929. (83 HP @ 5000 RPM). In normal driving conditions, 1991 Buick Riviera should accelerate faster than 1980 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Riviera weights approximately 450 kg more than 1980 Mazda 929. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1991 Buick Riviera (285 Nm @ 3200 RPM) has 150 more torque (in Nm) than 1980 Mazda 929. (135 Nm @ 3000 RPM). This means 1991 Buick Riviera will have an easier job in driving up hills or pulling heavy equipment than 1980 Mazda 929.
Compare all specifications:
| 1991 Buick Riviera | 1980 Mazda 929 | |
| Make | Buick | Mazda |
| Model | Riviera | 929 |
| Year Released | 1991 | 1980 |
| Engine Position | Front | Front |
| Engine Size | 3800 cc | 1769 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 170 HP | 83 HP |
| Engine RPM | 4800 RPM | 5000 RPM |
| Torque | 285 Nm | 135 Nm |
| Torque RPM | 3200 RPM | 3000 RPM |
| Engine Bore Size | 96.5 mm | 80 mm |
| Engine Stroke Size | 86.4 mm | 88 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1520 kg | 1070 kg |
| Vehicle Length | 5040 mm | 4410 mm |
| Vehicle Width | 1830 mm | 1670 mm |
| Vehicle Height | 1350 mm | 1420 mm |
| Wheelbase Size | 2760 mm | 2520 mm |
