About this car
The Citroën SM, introduced at the 1970 Geneva Motor Show, was the result of a partnership between Citroën and Maserati, creating a luxury coupe that combined Citroën’s unconventional style and comfort with Maserati’s performance and elegance. The SM was designed as a high-end Grand Tourer, featuring a sleek and elongated body, with distinctive elements like covered rear wheels and a large rear hatch with horizontal tail lights. The futuristic design continued inside, with a bright and spacious cabin for four passengers and futuristic-looking seats.
Technically, the SM was based on a shortened and lowered version of the DS platform, making it sportier. It inherited Citroën’s renowned hydropneumatic suspension, which had proven effective both on regular roads and in rally racing. The SM also introduced the new “Diravi” steering system, where hydraulic assistance helped align the wheels even when the car was stationary. However, Citroën faced challenges with the engine, as their existing lineup didn’t include powerful enough engines for the SM’s high-end positioning.
This led Citroën to acquire Maserati in 1968, enabling them to use Maserati’s expertise in high-performance engines. The SM was equipped with a 2.7-liter V6 engine from Maserati, producing 180 horsepower and capable of reaching a top speed of 220 km/h.
The SM had a significant following despite its high price, but the 1973 oil crisis led to its discontinuation, alongside the aging DS. Production ended in 1975 after nearly 13,000 units were sold, with some final cars assembled by Ligier. Though no longer in production, the SM remained a coveted vehicle for car enthusiasts who appreciated its advanced technology and unique design, marking the end of an era for Citroën’s large luxury coupes.
Trim Levels/Versions
6| Year | Model Name | Fuel | Body | WheelDrive | Pr.From | to | Speed | QOD | |
|---|---|---|---|---|---|---|---|---|---|
| Year | Model Name | Fuel | Body | WheelDrive | Pr.From | to | Speed | QOD | |
| 1970 | 1970 Citroën SM | Petrol | Coupé | FWD | 1970 | 1972 | 217 km/h |
C
|
|
| 1973 | 1973 Citroën SM 3.0 Automatique | Petrol | Coupé | FWD | 1973 | 1975 | 205 km/h |
C
|
|
| 1972 | 1972 Citroën SM Injection | Petrol | Coupé | FWD | 1972 | 1975 | 228 km/h | 1 |
C
|
| 1973 | 1973 Citroën SM 3.0 | Petrol | Coupé | FWD | 1973 | 1973 | 225 km/h |
C
|
|
| 1972 | 1972 Citroën SM Automatique | Petrol | Coupé | FWD | 1972 | 1972 | 217 km/h |
C
|
|
| 1971 | Citroën SM Présidentielle | Petrol | Landaulet | FWD | 0 | 0 | - | 1 |
D
|
Engines
4| Id.Engine | 2670 cc | 2670 cc | 2670 cc | 2965 cc |
|---|---|---|---|---|
| Kind of Engine | Naturally aspirated | Naturally aspirated | Naturally aspirated | Naturally aspirated |
| Identificative engine | c114/1 | c114/3 | c114/11 | |
| Cylinders Configuration | V Engine | V Engine | V Engine | V Engine |
| Displacement | 2670 cc | 2670 cc | 2670 cc | 2965 cc |
| Cylinders number | 6 | 6 | 6 | 6 |
| Fuel | Petrol | Petrol | Petrol | Petrol |
| Electric engine - kind | ||||
| Battery kind | ||||
| Peak Power (hp) | ||||
| Peak Power (kW) | ||||
| Battery power | ||||
| Operating Voltage | ||||
| Battery: Operating Temperature | ||||
| Battery: System Voltage | ||||
| Battery: Cell Configuration | ||||
| Battery: 0-80% Charge time | ||||
| Torque | 230 N-m | 245 N-m | ||
| Torque @ r.p.m. | 4000 rpm | 4000 rpm | ||
| Cylinders angle | 90 | 90 | 90 | |
| Maximum Power (HP) | 168 hp | 176 hp | 180 hp | |
| Power (PS) | 170 ps | 178 ps | 183 ps | 183 ps |
| Power kW | 125 kW | 131 kW | 134 kW | 134 kW |
| Power @ rounds per minute | 5500 rpm | 5750 rpm | 5750 rpm | |
| Bore | 87 mm | 87 mm | 91.6 mm | |
| Stroke | 75 mm | 75 mm | 75 mm | |
| Valve Train | Double overhead camshaft DOHC | Double overhead camshaft DOHC | Double overhead camshaft DOHC | Double overhead camshaft DOHC |
| Compression Ratio | 9:1 | 9:1 | ||
| Engine block material | ||||
| Cylinder head material | ||||
| Fuel System | 3 weber 42 dc nf carburettors | bosch d-jetronic fuel injection | 3 weber carburettors | 3 weber carburettors |
| Coolant | Water | Water | Water | Water |
| Engine Data accuracy |
E
| |||
|
SM
1
SM 5 |
SM
5
|
SM Présidentielle
5
|
SM 3.0 Automatique
1
SM 3.0 5 |
Car body variants
2 COU LAN| Variants | #COU | #COU | #LAN |
|---|---|---|---|
| Body style | Coupé | Coupé | Landaulet |
| no.Doors | |||
| Wheelbase | 2950 mm | 2950 mm | 3470 mm |
| Lenght | 4893 mm | 4893 mm | 5603 mm |
| Width | 1836 mm | 1836 mm | 1836 mm |
| Height | 1324 mm | 1321 mm | |
| Curb Weight | |||
| Wheel Drive | |||
| Engine Location | Front | Front | Front |
| Chassis | |||
| Seating capacity (number) | |||
| Track Tread (front) | 1526 mm | 1526 mm | |
| Track Tread (rear) | 1326 mm | 1326 mm | |
| Luggage capacity (min) | |||
| Luggage capacity (max) | |||
| Weight distribution (FRONT) | |||
| Engine Alignment | Longitudinal | Longitudinal | Longitudinal |
| Drag Coefficient | |||
| Equipment | |||
|
SM
SM SM |
SM 3.0 Automatique
SM 3.0 |
SM Présidentielle
|


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