1991 Buick Riviera vs. 2007 Citroen C4
To start off, 2007 Citroen C4 is newer by 16 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, 1991 Buick Riviera (170 HP @ 4800 RPM) has 31 more horse power than 2007 Citroen C4. (139 HP @ 6000 RPM). In normal driving conditions, 1991 Buick Riviera should accelerate faster than 2007 Citroen C4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Citroen C4 weights approximately 115 kg more 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, 1991 Buick Riviera (285 Nm @ 3200 RPM) has 85 more torque (in Nm) than 2007 Citroen C4. (200 Nm @ 4000 RPM). This means 1991 Buick Riviera will have an easier job in driving up hills or pulling heavy equipment than 2007 Citroen C4.
Compare all specifications:
| 1991 Buick Riviera | 2007 Citroen C4 | |
| Make | Buick | Citroen |
| Model | Riviera | C4 |
| Year Released | 1991 | 2007 |
| Body Type | Coupe | Minivan |
| Engine Position | Front | Front |
| Engine Size | 3800 cc | 1997 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 170 HP | 139 HP |
| Engine RPM | 4800 RPM | 6000 RPM |
| Torque | 285 Nm | 200 Nm |
| Torque RPM | 3200 RPM | 4000 RPM |
| Engine Bore Size | 96.5 mm | 85 mm |
| Engine Stroke Size | 86.4 mm | 88 mm |
| Engine Compression Ratio | 8.5:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1520 kg | 1635 kg |
| Vehicle Length | 5040 mm | 4280 mm |
| Vehicle Width | 1830 mm | 1840 mm |
| Vehicle Height | 1350 mm | 1630 mm |
| Wheelbase Size | 2760 mm | 2730 mm |
