1991 Buick Riviera vs. 2005 Citroen C6
To start off, 2005 Citroen C6 is newer by 14 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, 2005 Citroen C6 (212 HP @ 5250 RPM) has 42 more horse power than 1991 Buick Riviera. (170 HP @ 4800 RPM) In normal driving conditions, 2005 Citroen C6 should accelerate faster than 1991 Buick Riviera.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, both vehicles can yield 285 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles.
Compare all specifications:
| 1991 Buick Riviera | 2005 Citroen C6 | |
| Make | Buick | Citroen |
| Model | Riviera | C6 |
| Year Released | 1991 | 2005 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3800 cc | 2946 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 170 HP | 212 HP |
| Engine RPM | 4800 RPM | 5250 RPM |
| Torque | 285 Nm | 285 Nm |
| Torque RPM | 3200 RPM | 3750 RPM |
| Engine Bore Size | 96.5 mm | 87 mm |
| Engine Stroke Size | 86.4 mm | 83 mm |
| Engine Compression Ratio | 8.5:1 | 10.9:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 5040 mm | 4920 mm |
| Vehicle Width | 1830 mm | 1870 mm |
| Vehicle Height | 1350 mm | 1470 mm |
| Wheelbase Size | 2760 mm | 2910 mm |
