1958 Aston Martin DB4 vs. 1972 Citroen SM
To start off, 1972 Citroen SM is newer by 14 year(s). Which means there will be less support and parts availability for 1958 Aston Martin DB4. In addition, the cost of maintenance, including insurance, on 1958 Aston Martin DB4 would be higher. At 3,668 cc (6 cylinders), 1958 Aston Martin DB4 is equipped with a bigger engine. In terms of performance, 1958 Aston Martin DB4 (240 HP @ 5500 RPM) has 67 more horse power than 1972 Citroen SM. (173 HP @ 5500 RPM). In normal driving conditions, 1958 Aston Martin DB4 should accelerate faster than 1972 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 1972 Citroen SM weights approximately 142 kg more than 1958 Aston Martin DB4.
Because 1958 Aston Martin DB4 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1958 Aston Martin DB4. However, in wet, icy, snow, or gravel driving conditions, 1972 Citroen SM, being front wheel drive (FWD), will offer much better control with better grip. 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, 1958 Aston Martin DB4 (325 Nm @ 4250 RPM) has 88 more torque (in Nm) than 1972 Citroen SM. (237 Nm @ 4000 RPM). This means 1958 Aston Martin DB4 will have an easier job in driving up hills or pulling heavy equipment than 1972 Citroen SM.
Compare all specifications:
| 1958 Aston Martin DB4 | 1972 Citroen SM | |
| Make | Aston Martin | Citroen |
| Model | DB4 | SM |
| Year Released | 1958 | 1972 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3668 cc | 2669 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 240 HP | 173 HP |
| Engine RPM | 5500 RPM | 5500 RPM |
| Torque | 325 Nm | 237 Nm |
| Torque RPM | 4250 RPM | 4000 RPM |
| Engine Bore Size | 92 mm | 87 mm |
| Engine Stroke Size | 92 mm | 75 mm |
| Engine Compression Ratio | 8.3:1 | 9.0:1 |
| Drive Type | Rear | Front |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1308 kg | 1450 kg |
| Vehicle Length | 4490 mm | 4900 mm |
| Vehicle Width | 1680 mm | 1850 mm |
| Vehicle Height | 1330 mm | 1330 mm |
| Wheelbase Size | 2500 mm | 2960 mm |
| Fuel Tank Capacity | 86 L | 25 L |
