Citroën GS
Encyclopedia
The Citroën GS and Citroën GSA (1979–86) are small family cars produced by the French automaker Citroën
Citroën
Citroën is a major French automobile manufacturer, part of the PSA Peugeot Citroën group.Founded in 1919 by French industrialist André-Gustave Citroën , Citroën was the first mass-production car company outside the USA and pioneered the modern concept of creating a sales and services network that...

. The GS was voted European Car of the Year
European Car of the Year
The European Car of the Year award was established in 1964 by a collective of automobile magazines from different countries in Europe. The current organisers of the award are Auto , Autocar , Autopista , Autovisie , L'Automobile Magazine , Stern and Vi Bilägare .The voting jury consists of motoring...

 for 1971, and was probably the most technologically advanced car in its class when launched, with class leading comfort, safety and aerodynamics.

Market placement

The GS filled the enormous gap in Citroën's range, between the 2CV
Citroën 2CV
The Citroën 2CV |tax horsepower]]”) was an economy car produced by the French automaker Citroën between 1948 and 1990. It was technologically advanced and innovative, but with uncompromisingly utilitarian unconventional looks, and deceptively simple Bauhaus inspired bodywork, that belied the sheer...

 and Ami
Citroën Ami
The Citroën Ami is a supermini produced by the French automaker Citroën from 1961 to 1978. The Ami and stablemate Citroën Dyane were replaced by the Citroën Visa and Citroën Axel . The Ami was for some years the best-selling car model in France...

 economy car
Economy car
An economy car is an automobile that is designed for low cost operation. Typical economy cars are small, light weight, and inexpensive to buy. Economy car designers are forced by stringent design constraints to be inventive...

s and the luxurious DS
Citroën DS
The Citroën DS is an executive car produced by the French manufacturer Citroën between 1955 and 1975. Styled by Italian sculptor and industrial designer Flaminio Bertoni and the French aeronautical engineer André Lefèbvre, the DS was known for its aerodynamic futuristic body design and innovative...

. Leaving this market gap open for fifteen years allowed other manufacturers entry into the most profitable market segment in France. This combined with the development costs and new factory for the DS-replacing Citroen CX
Citroën CX
The Citroën CX is an automobile produced by the French automaker Citroën from 1974 to 1991. Citroën sold nearly 1.2 million CXs during its 16 years of production. The CX was voted European Car of the Year in 1975....

, the 1974 oil crisis
1973 oil crisis
The 1973 oil crisis started in October 1973, when the members of Organization of Arab Petroleum Exporting Countries or the OAPEC proclaimed an oil embargo. This was "in response to the U.S. decision to re-supply the Israeli military" during the Yom Kippur war. It lasted until March 1974. With the...

, and an aborted Wankel rotary engine
Wankel engine
The Wankel engine is a type of internal combustion engine using an eccentric rotary design to convert pressure into a rotating motion instead of using reciprocating pistons. Its four-stroke cycle takes place in a space between the inside of an oval-like epitrochoid-shaped housing and a rotor that...

, led Citroën to declare bankruptcy
Bankruptcy
Bankruptcy is a legal status of an insolvent person or an organisation, that is, one that cannot repay the debts owed to creditors. In most jurisdictions bankruptcy is imposed by a court order, often initiated by the debtor....

 in 1974.

The GS met with instant market acceptance and was the largest selling Citroën model for many years. 1,896,742 GS models and 576,757 GSA models were produced in total.

The GS was never officially imported to the USA.

Design stage

Work began on the concept of a small family car as early as 1960, with the "C60", to slot between the 1961 Citroën Ami
Citroën Ami
The Citroën Ami is a supermini produced by the French automaker Citroën from 1961 to 1978. The Ami and stablemate Citroën Dyane were replaced by the Citroën Visa and Citroën Axel . The Ami was for some years the best-selling car model in France...

 and DS
Citroën DS
The Citroën DS is an executive car produced by the French manufacturer Citroën between 1955 and 1975. Styled by Italian sculptor and industrial designer Flaminio Bertoni and the French aeronautical engineer André Lefèbvre, the DS was known for its aerodynamic futuristic body design and innovative...

. This project continued in various forms for a decade, with a Wankel engine and typically Citroën hydropneumatic suspension
Suspension (vehicle)
Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. Suspension systems serve a dual purpose — contributing to the car's roadholding/handling and braking for good active safety and driving pleasure, and keeping vehicle occupants...

 suggested as possibilities, with a new, modern body to match. In 1963, development had moved to "Project F", which was close to being production ready. Citroën decided the car was too similar to the 1965 Renault 16
Renault 16
The Renault 16 is a hatchback produced by French automaker Renault between 1965 and 1980 in Le Havre, France. The reviewer in the May 1965 edition of the English "Motoring Illustrated" said: "The Renault Sixteen can thus be described as a large family car but one that is neither a four door saloon...

 and in 1967 Project F was suspended, but many of the mechanical components continued to "Project G", which became the GS.

Launch and ongoing development

On 24 August 1970, Citroën launched the GS. The body style
Car body style
Automobiles' body styles are highly variable. Some body styles remain in production, while others become less common or obsolete. They may or may not correlate to a car's price, size or intended market classification. The same car model might be available in multiple body styles comprising a...

 was as a "Berline" (essentially a saloon, three lateral windows), in a fastback
Fastback
A fastback is a car body style whose roofline slopes continuously down at the back. The word can also designate the car itself. The style is seen on two-door coupés as well as four-door sedans.-History:...

 style with a sharp Kamm tail
Kammback
A Kammback is a car body style that derives from the research of the German aerodynamicist Wunibald Kamm in the 1930s. The design calls for a body with smooth contours that continues to a tail that is abruptly cut off. This shape reduces the drag of the vehicle."Kammback" is an American term...

. The aerodynamics
Aerodynamics
Aerodynamics is a branch of dynamics concerned with studying the motion of air, particularly when it interacts with a moving object. Aerodynamics is a subfield of fluid dynamics and gas dynamics, with much theory shared between them. Aerodynamics is often used synonymously with gas dynamics, with...

 gave the best drag coefficient
Drag coefficient
In fluid dynamics, the drag coefficient is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment such as air or water. It is used in the drag equation, where a lower drag coefficient indicates the object will have less aerodynamic or...

 of any vehicle at the time.

Good aerodynamics enabled the car to make the best of the available power, but the car as launched nevertheless drew criticism that it was underpowered. Citroën addressed the issue with the introduction in September 1972, as an option, of a larger 1,222 cc engine. Claimed power increased from 55 bhp to 60 bhp, but it was the improved torque that really marked out the more powerful engine, and which enabled the manufacturer, with the larger engined versions, to raise the second gear ratio and the final drive ratio, increasing the vehicle speed per 1,000 rpm from 23 km/h (14.3 mph) to 24.5 km/h (15.2 mph). Larger front brake discs were also fitted.

Visually the GS bore little resemblance to any other car on the market, until the development of the Citroën CX
Citroën CX
The Citroën CX is an automobile produced by the French automaker Citroën from 1974 to 1991. Citroën sold nearly 1.2 million CXs during its 16 years of production. The CX was voted European Car of the Year in 1975....

 in 1974.

The GS was designed "in house" by Robert Opron
Robert Opron
Robert Opron is a French automotive designer, trained as an architect, and noted for designs from the 1960s through the 1980s for Simca, Fiat, Alfa Romeo, Ligier, Renault and Citroën – which he joined in 1962 and where he became Responsable de Style, head of the design department.Opron was a...

 and was controversial — a hatchback
Hatchback
A Hatchback is a car body style incorporating a shared passenger and cargo volume, with rearmost accessibility via a rear third or fifth door, typically a top-hinged liftgate—and features such as fold-down rear seats to enable flexibility within the shared passenger/cargo volume. As a two-box...

 layout was considered too utilitarian by CEO Pierre Bercot, but was introduced later with the arrival of the GSA. The boot was nevertheless exceptionally large, in part due to the positioning of the spare wheel on top of the engine.

It was offered in two trims; GS Club as the entry model and GS Pallas (only saloons) with full wheel covers, side mouldings, tinted glass and upgraded upholstery. The GS was also available, from September 1971, as a break (estate) and a similar two-door "service" van
Van
A van is a kind of vehicle used for transporting goods or groups of people.In British English usage, it can be either specially designed or based on a saloon or sedan car, the latter type often including derivatives with open backs...

.

The GSA replaced the GS in 1979 and added a hatchback. Other modifications included a new grille, new bumpers, new taillights, new hubcaps and new exterior handles . It also had a revised dashboard with the auxiliary controls on column-shaped pods so they could be reached without moving the hands from the single-spoked steering wheel; similar to the CX layout. Both the early GS (produced until 1976) and the GSA have the unusual rotating drum speedometer (similar in construction to bathroom scales), rather than the dials found in a conventional dashboard
Dashboard
A dashboard is a control panel placed in front of the driver of an automobile, housing instrumentation and controls for operation of the vehicle....

. The later GS (from 1977 until the introduction of the GSA) had a conventional speedometer.

Critics

Contemporary journalist
Journalist
A journalist collects and distributes news and other information. A journalist's work is referred to as journalism.A reporter is a type of journalist who researchs, writes, and reports on information to be presented in mass media, including print media , electronic media , and digital media A...

s remarked at the smooth ride quality — the hydropneumatic suspension
Suspension (vehicle)
Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. Suspension systems serve a dual purpose — contributing to the car's roadholding/handling and braking for good active safety and driving pleasure, and keeping vehicle occupants...

 is designed to absorb bumps and ripples that would be uncomfortable in a conventionally sprung car with just a slight body movement.

Though it won praise for the ingenuity of the design, shortcomings included manufacturing quality and corrosion
Corrosion
Corrosion is the disintegration of an engineered material into its constituent atoms due to chemical reactions with its surroundings. In the most common use of the word, this means electrochemical oxidation of metals in reaction with an oxidant such as oxygen...

 resistance and the heater was doubted due to its air-cooled engine. But the most criticised aspect of the GS was the relatively low power of the various engines offered. This was driven by the "puissance fiscale"
Tax horsepower
The tax horsepower or taxable horsepower was an early system by which taxation rates for automobiles were reckoned in some European countries, such as Britain, Belgium, Germany, France, and Italy; some US states like Illinois charged license plate purchase and renewal fees for passenger...

 taxation system which, at that time in France, linked car tax rates directly to engine displacement
Engine displacement
Engine displacement is the volume swept by all the pistons inside the cylinders of an internal combustion engine in a single movement from top dead centre to bottom dead centre . It is commonly specified in cubic centimeters , litres , or cubic inches...

. By the standards of the time, the 1015 cc GS was especially underpowered even at launch, and Citroën found themselves overstocked with engines of this size: these were eventually diverted to give an overdue power boost to the Citroën Ami
Citroën Ami
The Citroën Ami is a supermini produced by the French automaker Citroën from 1961 to 1978. The Ami and stablemate Citroën Dyane were replaced by the Citroën Visa and Citroën Axel . The Ami was for some years the best-selling car model in France...

.

Mechanics

The vehicle had a front-wheel drive
Front-wheel drive
Front-wheel drive is a form of engine/transmission layout used in motor vehicles, where the engine drives the front wheels only. Most modern front-wheel drive vehicles feature a transverse engine, rather than the conventional longitudinal engine arrangement generally found in rear-wheel drive and...

 layout and was powered by a flat-4
Flat-4
A flat-4 or horizontally opposed-4 is a flat engine with four cylinders arranged horizontally in two banks of two cylinders on each side of a central crankcase...

 air-cooled engine. A series of small engines were available, displacing 1015, 1129, 1222 and 1299 cc. Power ranged from 55 PS to 66 PS. Mated to a four speed gearbox
Transmission (mechanics)
A machine consists of a power source and a power transmission system, which provides controlled application of the power. Merriam-Webster defines transmission as: an assembly of parts including the speed-changing gears and the propeller shaft by which the power is transmitted from an engine to a...

, these were able to pull this car up to steady 151 km/h (94 mph) at 6250 rpm (with 1222 cc engine), due to the very aerodynamic body shape. Citroën's 3-speed C-Matic semi-automatic transmission
Automatic transmission
An automatic transmission is one type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually...

 was available as an alternative to the manual gearbox. With the introduction of the GSA a 5-speed gearbox was offered, which made cruising at high speeds more comfortable and economical (the top speed was raised to 164 km/h (102 mph) for both long and short gearbox ratios ). The GS and GSA were always low powered and needed full use of the free-revving engines to maintain progress, except when cruising, in the tradition of the Citroën 2CV
Citroën 2CV
The Citroën 2CV |tax horsepower]]”) was an economy car produced by the French automaker Citroën between 1948 and 1990. It was technologically advanced and innovative, but with uncompromisingly utilitarian unconventional looks, and deceptively simple Bauhaus inspired bodywork, that belied the sheer...

.

The four-wheel independent suspension featured a double wish-bone layout at the front and trailing arms at the rear. Both axles comprised rigid sub frames that gave the car unmatched road holding for the time, even on its narrow tires (factory-mounted Michelin ZX 145sr15).

Its central hydraulic system, powering the four disc brake
Disc brake
The disc brake or disk brake is a device for slowing or stopping the rotation of a wheel while it is in motion.A brake disc is usually made of cast iron, but may in some cases be made of composites such as reinforced carbon–carbon or ceramic matrix composites. This is connected to the wheel and/or...

s (inboard in front to help lower unsprung weight) and the advanced hydro-pneumatic self-levelling suspension
Self-levelling suspension
Self-levelling refers to an automobile suspension system that maintains a constant ride height of the vehicle above the road, regardless of load....

, was derived from the Citroën DS
Citroën DS
The Citroën DS is an executive car produced by the French manufacturer Citroën between 1955 and 1975. Styled by Italian sculptor and industrial designer Flaminio Bertoni and the French aeronautical engineer André Lefèbvre, the DS was known for its aerodynamic futuristic body design and innovative...

. It also has a feature that increased or decreased braking pressure in accordance with cargo load, without any noticeable difference in the brake pedal response. The powered system was different from the typical assisted systems in that there was virtually no travel on the brake pedal even when braking hard. The hydraulic suspension allowed the car to be raised for rough terrain at low speeds (a feature taking account of the country lanes of its native France) and to full height for easy access to the partially enclosed rear wheels.

GS Birotor

A two rotor GS was launched in 1973. Dubbed the Citroën GS Birotor (also called Citroën GZ), it featured a 107 PS Wankel
Wankel engine
The Wankel engine is a type of internal combustion engine using an eccentric rotary design to convert pressure into a rotating motion instead of using reciprocating pistons. Its four-stroke cycle takes place in a space between the inside of an oval-like epitrochoid-shaped housing and a rotor that...

 birotor produced by the joint NSU-Citroën Comotor
Comotor
The Company Comotor SA was a joint venture between NSU and Citroën, created in Luxembourg in April 1967. Its goal was to produce Wankel engines....

 project. This style of motor is noted for its smooth power delivery which complemented the luxurious ride quality of the hydropneumatic suspension. The Birotor was extensively reengineered, besides for the Comotor 624 engine. Discs all around (ventilated in front), different wheels with a five-bolt pattern rather than three, and a three-speed semi-automatic transmission were combined with a more luxurious interior and flared fenders to set the Birotor apart from its lesser siblings. Sadly, the Birotor was placed in the uncomfortable position of costing more than the larger, faster, more economical and less complex Citroën DS which quickly sealed its fate.

The Birotor version achieved poor sales and was quickly pulled from the market after 847 units sold. It was not economical for its size and was launched during the 1973 oil crisis
1973 oil crisis
The 1973 oil crisis started in October 1973, when the members of Organization of Arab Petroleum Exporting Countries or the OAPEC proclaimed an oil embargo. This was "in response to the U.S. decision to re-supply the Israeli military" during the Yom Kippur war. It lasted until March 1974. With the...

.

The sales and quality were so disappointing that Citroën attempted to buy back and scrap each Birotor, as it did not want to support the model with spare parts. A few of these remarkable vehicles have nonetheless survived in the hands of collectors, many without titles for some time as Citroën did not want to recognize the cars.

GS production abroad

The GS and GSA were built in a number of countries besides France. Besides Spain, Portugal and England, production took place in countries as varied as South Africa
South Africa
The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

, Chile
Chile
Chile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...

 and then Rhodesia (Zimbabwe
Zimbabwe
Zimbabwe is a landlocked country located in the southern part of the African continent, between the Zambezi and Limpopo rivers. It is bordered by South Africa to the south, Botswana to the southwest, Zambia and a tip of Namibia to the northwest and Mozambique to the east. Zimbabwe has three...

). All three bodystyles, GS and GSA versions and a mix thereof were built in Cakung
Cakung
Cakung is a subdistrict of East Jakarta, Jakarta, Indonesia. The subdistrict is roughly bounded with Bekasi Raya Road to the west, Bekasi Raya Road - Petukangan canal to the north, portion of Cakung river to the east, and Jakarta-Bandung-Surabaya railway to the south. Large area in Cakung is...

 in East Jakarta, Indonesia
Indonesia
Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

 by PT Alun Indah. Indonesian production continued until at least 1990. Like the Indonesian models, Cimos in Slovenia used the twin-headlight fixtures developed for export markets on the GSs they built in Koper. For unknown reasons Slovenian GSs were almost exclusively finished in "campus beige" color. The GSA was called the GA in Yugoslavia.

GSA in German Democratic Republic

Between 1979 and 1983 around 5500 were exported to the German Democratic Republic
German Democratic Republic
The German Democratic Republic , informally called East Germany by West Germany and other countries, was a socialist state established in 1949 in the Soviet zone of occupied Germany, including East Berlin of the Allied-occupied capital city...

 ("East Germany") making it one of the few western cars in the country. Erich Honecker
Erich Honecker
Erich Honecker was a German communist politician who led the German Democratic Republic as General Secretary of the Socialist Unity Party from 1971 until 1989, serving as Head of State as well from Willi Stoph's relinquishment of that post in 1976....

, the East German party leader, maintained a fleet of the larger CX
Citroën CX
The Citroën CX is an automobile produced by the French automaker Citroën from 1974 to 1991. Citroën sold nearly 1.2 million CXs during its 16 years of production. The CX was voted European Car of the Year in 1975....

 model and several Volvo
Volvo
AB Volvo is a Swedish builder of commercial vehicles, including trucks, buses and construction equipment. Volvo also supplies marine and industrial drive systems, aerospace components and financial services...

s.

Documentary

  • Production of the GS is described in the Louis Malle
    Louis Malle
    Louis Malle was a French film director, screenwriter, and producer. He worked in both French cinema and Hollywood. His films include Ascenseur pour l'échafaud , Atlantic City , and Au revoir, les enfants .- Early years in France :Malle was born into a wealthy industrialist family in Thumeries,...

     documentary film, Humain, trop humain
    Humain, trop humain
    Humain, trop humain is a French documentary film by Louis Malle about the operations of a Citroën car production plant....

    .
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