Makes › Citroën › SM › SM Opéra (Chapron) · Coachbuilt · 1972–1974 Ultra Rare
Citroën
SM Opéra (Chapron)
Four-door saloon SM by Henri Chapron.
Still being researched: full specifications. Everything shown is checked against the cited sources. Know more? Send us a source.
Photo: Clemens Vasters from Viersen, Germany, Germany · CC BY 2.0
Contents
01Overview
At a glance
- Built
- 8 Built
- Years
- 1972–1974
- Engine
- V6 (Maserati-based), Bosch fuel injection · 2,670 cc / 2.7 LFactory: 2,670 cc
- Power
- 133 kW / 180 PSFactory: 178 hp · converted
- Top speed
- Not yet verified
- Body
- Henri Chapron
- Designer
- Henri Chapron
- In this archive
- Not yet verified
- Surviving
- Not yet verified
Sources and any conflicting figures are in the sections below.
Why it matters
The Opéra was Henri Chapron's four-door saloon on a lengthened SM floorpan, one of the most exclusive post-war Citroëns. Its high price limited sales to just eight cars between 1972 and 1974.
How rare is it?
Six separate kinds of rarity – never combined into one number.
Each kind of rarity is rated separately and never combined.
Photos
Exterior, interior and detail photos with their licences.
Citroën SM Opéra (Chapron) (Wikimedia Commons: Citroën SM Opéra)
Photo: Clemens Vasters from Viersen, Germany, Germany · CC BY 2.0
Citroën SM Opéra (Chapron) (Wikimedia Commons: Citroën SM Opéra)
Photo: Clemens Vasters from Viersen, Germany, Germany · CC BY 2.0
Citroën SM Opéra (Chapron) (Wikimedia Commons: Citroën SM Opéra)
Photo: Loudumo · CC BY-SA 4.0
Citroën SM Opéra (Chapron) (Wikimedia Commons: Citroën SM Opéra)
Photo: Klaus Nahr · CC BY-SA 2.0
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02Production & history
Production
Every figure says what it counts.
| What is counted | Figure | Basis | Status |
|---|---|---|---|
| Total model productionbuilt 1972–1974 | 81 | Factory production | Independently researched |
Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.
History
Chapron lengthened the SM's floorpan by about 30 cm to create a four-door, long-wheelbase saloon, shown at the Paris Motor Show in October 1972. It was announced at 165,000 francs and found few buyers. Eight were built up to 1974: four went to Spain, one to Haiti and three stayed in France. Power came from the SM's Maserati-based V6 with Bosch fuel injection, rated at 178 bhp DIN.
Variants
How each version differs from the standard SM Opéra (Chapron).
No variants documented yet. Have a source? Contribute it.
03Specifications
Technical specifications
Engine
| Engine family | Not yet verified |
|---|---|
| Engine code | Not yet verified |
| Layout | V6 (Maserati-based), Bosch fuel injection2 Independently researched |
| Displacement | 2,670 cc / 2.7 LFactory: 2,670 cc2 |
| Bore | Not yet verified |
| Stroke | Not yet verified |
| Compression ratio | Not yet verified |
| Fuel system | Not yet verified |
| Power | 133 kW / 180 PSFactory: 178 hp · converted2Rating: DINSource states bhp. |
| Power at | Not yet verified |
| Torque | Not yet verified |
Transmission & drivetrain
| Gearbox | Not yet verified |
|---|---|
| Gears | Not yet verified |
| Driven wheels | Not yet verified |
Chassis, body & dimensions
| Chassis | Not yet verified |
|---|---|
| Front suspension | Not yet verified |
| Rear suspension | Not yet verified |
| Brakes | Not yet verified |
| Steering | Not yet verified |
| Body construction | Not yet verified |
| Wheelbase | Not yet verified |
| Length | Not yet verified |
| Width | Not yet verified |
| Height | Not yet verified |
| Front track | Not yet verified |
| Rear track | Not yet verified |
| Kerb weight | Not yet verified |
| Dry weight | Not yet verified |
Performance
| Maximum speed | Not yet verified |
|---|---|
| 0–100 km/h | Not yet verified |
| Fuel tank | Not yet verified |
“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.
04Colours & options
Factory colours & interiors
Original paint and trim, with the number of cars in each where a source gives it.
Not yet documented. Have a source? Contribute it.
Factory options & codes
Codes are shown exactly as written by the manufacturer.
Not yet documented. Have a source? Contribute it.
05Individual cars
Chassis register
Every documented car, with its colours, history and where it is now. Open a row for the full record. Known chassis are not automatically authenticated originals.
Not yet documented. Have a source? Contribute it.
Competition history
Every race result of the individual cars, in date order. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
Auction & sale history
Documented public sales of the individual cars. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
See one in person
Museums where an example of this car can be seen.
No example is documented on public display yet. Have a source? Contribute it.
06Reference
Identification guide
How to tell an original from a replica or later conversion.
Genuine cars are four-door SMs on a floorpan lengthened by about 12 in (30 cm), with Chapron's cockerel emblem on the doors and 'Chapron' chrome script on the front wings. The catalogued car is chassis 00SC0950.
Sources
Each number links to the exact facts it supports.
- 1
-
2
1974 Citroën SM 'Opéra' saloon by Chapron, chassis 00SC0950 Level B Bonhams
- Maserati-based V6 ... Bosch fuel injection
- V6 of 2,670cc
- 178bhp DIN
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