Citroën SM

“The big roadster”

Citroën SM


The Citroën SM is unique in several respects, starting with the combination of a Maserati V6 engine and the traditional Citroën technology. This turbulent Italo-French marriage spawned a technically complex, and unfortunately rather fragile, car.

However complex the Citroën SM may be, this exceptional granturismo holds no secrets for the team at CQS Classics. Our professional mechanics, who have been working on this ultra-luxurious GT their entire career, will ensure that you can continue to drive your SM for many years to come, making it a reliable investment for the future.

Services for Citroën Méhari

Maintenance & Repair

CQS classics provides your beloved classic Citroën with a check-up or maintenance. We are experts in restoring and repairing your car to it’s original appearance.


Next points will be overlooked by performing a check-up of your classic:

  • Level of liquids like break fluid and window fluid
  • Condition filters
  • Complete ignition circuit
  • Condition breaks
  • Suspension, steering and driving condition
  • Condition hydraulic circuit if present
  • Steering and suspension lubrication
  • Lighting, horn and windscreen wipers
  • Tire and tire pressure condition
  • Complete starter and charging circuit
  • Engine adjustment
  • Engine and gearbox mounts
  • Check-up of complete lower panel

Depending on the number of kilometers driven and the elapsed time since the previous maintenance, the above parts will be replaced when necessary. Of course, this is always done in consultation with the customer. We would like to ask you to make an appointment if your car needs maintenance.

After this check-up and any repairs, your car is technically ready for the road. If the car needs to be inspected, the only thing left for us to do is to adjust the lights and the hydrocarbon. Afterwards you can drive to the technical inspection yourself, or we can do this for you.


CQS Classics has years of experience working with classic cars, especially post-war classic Citroëns. This means that CQS Classics can advise and assist you every step of the way, with minor or major bodywork.

Here is what CQS Classics can offer you:

  1. We have colour cards and the codes of all the original paints used by Citroën. That way you can be certain that your DS will be repainted in the right colour of your choice. You can also choose another, non-original Citroën colour.
  2. To avoid differences in colour during partial repaint jobs, we always start by checking a painted part, to determine the exact composition of the paint.
  3. We can also paint parts that you can then assemble yourself. E.g., parts that need replacing because of rust or damage.
  4. Naturally we only use top-class products to guarantee a top-notch result.

Rust is quite possibly the greatest enemy of any classic car and your Citroën DS is no different in this respect. Unfortunately desperate situations call for desperate measures. Sometimes minor welding is sufficient, such as welding a new inner panel or part of the underbody. But sometimes more radical interventions are necessary, such as the replacement of the sills or the entire underbody. The kind of job that is best left to professionals.

CQS Classics always uses the same method. Together with you, we take a critical look at the car, after which we send you a quote of the parts that need replacing/welding.

Then our experienced welders set to work. They use top-class parts and the right materials. And they take the original welds and spot welds into account. This is the only way you can avoid situations such as doors that no longer seamlessly close after a restoration.

CQS Classics can also give your car a thorough anti-rust treatment, ensuring it can withstand the test of time in all weather conditions.

Total Restoration

CQS Classics restores your Citroën SM to its original glory during one comprehensive restoration, in accordance with your wishes.

We take care of every aspect of the car during this total restoration, including the mechanics, the electricity and the bodywork.

How we proceed:

  1. We make an appointment for a preliminary visual inspection. We prefer to do this in our own workshop, but we can also come to you if necessary.
  2. We examine your SM with you and listen to your wishes. We also advise you on what we think is necessary to restore your SM to mint condition.
  3. We prepare an indicative quote, which we discuss with you.
  4. After you have approved our quote, we draw up a restoration agreement, in which we summarise all the works, budgets and agreements.
  5. You can follow the restoration process with your personal link to our website while we work on your car.
Partial Restoration

CQS Classics gives you the option to restore your Citroën SM to its original condition in various phases.

You can choose to bring your car to CQS Classics during the winter months. We take advantage of this ‘hibernation’ to perform the necessary repairs and restoration so that you can enjoy your old-timer again during the summer months.

How we proceed:

  1. You make an appointment and bring us your car.
  2. We look over your SM with you and discuss your wishes. After a thorough review by our specialists, we can assist you in a professional manner to determine the priorities.
  3. We draw up a phased plan in consultation with you, taking into account your budget and timing.

All work is done in consultation and in accordance with your wishes and specifications.


If you are interested in a quotation without obligation, or if you would like to go over the various possibilities with us, please do not hesitate to make an appointment.

Want to see more?

Are you curious about some of our projects?
Then check out our examples of Citroën Méhari on our portfolio page.


His Majesty

Already in the early sixties, Citroën toyed with the idea of a sports variant of the DS, a project which received the code name ‘S’. At some stage, it evolved into a specific model. When Citroën acquired Maserati in 1968, it finally also found the engine for it exclusive granturismo. On 11 March 1970, the Citroën SM was shown for the first time at the Geneva Motor Show. Its name derives from the project S designation, and the M stands for Maserati. Soon this elegant sports car became known as Sa Majesté.

The Citroën SM was launched at a time that the Marseillaise, France’s national anthem, was played with even more pride than usual. Like Beaubourg and La Défense, two architectural gems in Paris, and the Concorde aircraft, the SM became a symbol of progressive technology. It was one of the first cars whose body was developed in the wind tunnel, the first front-wheel drive GT and one of the first European cars with pioneering air conditioning. It also had a unique ‘light box’, with a six-headlight set-up with automated, dynamic correction.

Unfortunately the petrol crisis, which followed soon after, sounded the death knell for the Citroën SM. Production was halted in 1975. “The SM was born from speed and died with speed”, according to Citroën. A mere 12,920 SMs were produced during its lifetime. Every SM should therefore be treated with the utmost care, which CQS Classics can offer thanks to the knowledge that it accrued over the years of this unique and complex car.

Our partner for classic Citroën parts