1972 Citroen SM vs. 1989 Pontiac Bonneville
To start off, 1989 Pontiac Bonneville is newer by 17 year(s). Which means there will be less support and parts availability for 1972 Citroen SM. In addition, the cost of maintenance, including insurance, on 1972 Citroen SM would be higher. At 3,791 cc (6 cylinders), 1989 Pontiac Bonneville is equipped with a bigger engine. In terms of performance, 1972 Citroen SM (173 HP @ 5500 RPM) has 25 more horse power than 1989 Pontiac Bonneville. (148 HP @ 4400 RPM). In normal driving conditions, 1972 Citroen SM should accelerate faster than 1989 Pontiac Bonneville. With that said, vehicle weight also plays an important factor in acceleration. 1989 Pontiac Bonneville weights approximately 50 kg more than 1972 Citroen SM.
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, 1989 Pontiac Bonneville (271 Nm @ 2000 RPM) has 34 more torque (in Nm) than 1972 Citroen SM. (237 Nm @ 4000 RPM). This means 1989 Pontiac Bonneville will have an easier job in driving up hills or pulling heavy equipment than 1972 Citroen SM.
Compare all specifications:
| 1972 Citroen SM | 1989 Pontiac Bonneville | |
| Make | Citroen | Pontiac |
| Model | SM | Bonneville |
| Year Released | 1972 | 1989 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2669 cc | 3791 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 173 HP | 148 HP |
| Engine RPM | 5500 RPM | 4400 RPM |
| Torque | 237 Nm | 271 Nm |
| Torque RPM | 4000 RPM | 2000 RPM |
| Engine Bore Size | 87 mm | 96.6 mm |
| Engine Stroke Size | 75 mm | 86.4 mm |
| Engine Compression Ratio | 9.0:1 | 8.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1450 kg | 1500 kg |
| Vehicle Length | 4900 mm | 5060 mm |
| Vehicle Width | 1850 mm | 1840 mm |
| Vehicle Height | 1330 mm | 1420 mm |
| Wheelbase Size | 2960 mm | 2820 mm |
| Fuel Tank Capacity | 25 L | 68 L |
