2009 Chevrolet HHR vs. 1971 Citroen SM
To start off, 2009 Chevrolet HHR is newer by 38 year(s). Which means there will be less support and parts availability for 1971 Citroen SM. In addition, the cost of maintenance, including insurance, on 1971 Citroen SM would be higher. At 2,670 cc (6 cylinders), 1971 Citroen SM is equipped with a bigger engine. In terms of performance, 2009 Chevrolet HHR (172 HP @ 5800 RPM) has 14 more horse power than 1971 Citroen SM. (158 HP @ 5500 RPM). In normal driving conditions, 2009 Chevrolet HHR should accelerate faster than 1971 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, 1971 Citroen SM (235 Nm @ 4000 RPM) has 9 more torque (in Nm) than 2009 Chevrolet HHR. (226 Nm @ 4500 RPM). This means 1971 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 2009 Chevrolet HHR. 2009 Chevrolet HHR has automatic transmission and 1971 Citroen SM has manual transmission. 1971 Citroen SM will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Chevrolet HHR will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Chevrolet HHR | 1971 Citroen SM | |
| Make | Chevrolet | Citroen |
| Model | HHR | SM |
| Year Released | 2009 | 1971 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2401 cc | 2670 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 172 HP | 158 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 226 Nm | 235 Nm |
| Torque RPM | 4500 RPM | 4000 RPM |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Length | 4480 mm | 4900 mm |
| Vehicle Width | 1760 mm | 1850 mm |
| Vehicle Height | 1610 mm | 1330 mm |
| Wheelbase Size | 2640 mm | 2950 mm |
| Fuel Tank Capacity | 61 L | 89 L |
