1968 Buick Riviera vs. 1995 Opel Calibra
To start off, 1995 Opel Calibra is newer by 27 year(s). Which means there will be less support and parts availability for 1968 Buick Riviera. In addition, the cost of maintenance, including insurance, on 1968 Buick Riviera would be higher. At 7,050 cc (8 cylinders), 1968 Buick Riviera is equipped with a bigger engine. In terms of performance, 1968 Buick Riviera (305 HP @ 5000 RPM) has 190 more horse power than 1995 Opel Calibra. (115 HP @ 5200 RPM). In normal driving conditions, 1968 Buick Riviera should accelerate faster than 1995 Opel Calibra. With that said, vehicle weight also plays an important factor in acceleration. 1968 Buick Riviera weights approximately 710 kg more than 1995 Opel Calibra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1968 Buick Riviera (645 Nm @ 3200 RPM) has 475 more torque (in Nm) than 1995 Opel Calibra. (170 Nm @ 2600 RPM). This means 1968 Buick Riviera will have an easier job in driving up hills or pulling heavy equipment than 1995 Opel Calibra.
Compare all specifications:
| 1968 Buick Riviera | 1995 Opel Calibra | |
| Make | Buick | Opel |
| Model | Riviera | Calibra |
| Year Released | 1968 | 1995 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 7050 cc | 1998 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 305 HP | 115 HP |
| Engine RPM | 5000 RPM | 5200 RPM |
| Torque | 645 Nm | 170 Nm |
| Torque RPM | 3200 RPM | 2600 RPM |
| Engine Bore Size | 106.2 mm | 86 mm |
| Engine Stroke Size | 99.4 mm | 86 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1900 kg | 1190 kg |
| Vehicle Length | 5370 mm | 4500 mm |
| Vehicle Width | 2020 mm | 1700 mm |
| Vehicle Height | 1370 mm | 1610 mm |
| Wheelbase Size | 3030 mm | 2610 mm |
