Renault 4CV
| Industry | Automotive |
|---|---|
| Founded | February 25, 1899 in France |
| Founder | Louis Renault, Marcel Renault, Fernand Renault |
| Headquarters | Boulogne-Billancourt , France |
| Products | Automobiles, commercial vehicles |
| Website | www |
The Renault 4CV (, ) represents a small, economical automobile manufactured by the French company Renault from August 1947 until July 1961. It employed a rear-engine, rear-wheel-drive configuration and became the first French vehicle to surpass one million units sold. Its successor was the Renault Dauphine.
Built with a monocoque chassis and approximately in length, the 4CV was distinguished by front-hinged suicide doors. Production took place not only in France but also extended internationally to countries such as Australia, England, Japan, Spain, and Israel.
The designation "4CV" originates from the French phrase chevaux-vapeur (tax horsepower), which reflects the engine's taxation category influencing its market positioning.
Conception and development
During the German occupation of France in World War II, Renault engineers discreetly initiated the design of the 4CV while the company was limited to producing commercial and military vehicles. From 1941 to 1944, under technical director Wilhelm von Urach’s supervision, the small car project proceeded quietly. The initiative was spearheaded by technical director Fernand Picard—recently returned from Renault’s aero-engine division—and veteran engineer Charles-Edmond Serre, who aimed to create an affordable post-war automobile. This approach diverged from Louis Renault’s 1940 strategy, which emphasized updating mid-range models like the Juvaquatre and Primaquatre. Nevertheless, Picard and Serre remained committed to their vision.
Jean-Auguste Riolfo, responsible for testing, along with other department heads, were engaged early in development. In May 1941, Louis Renault unexpectedly gave his approval for the project, internally named "106E." However, due to German restrictions banning new passenger cars, this effort was treated as a secondary offshoot of an engine project intended for a future Juvaquatre model. German-appointed supervisors were kept uninformed about Project 106E, while von Urach quietly permitted progress.
Volkswagen influence
In November 1945, the French government invited Ferdinand Porsche to France to explore relocating the Volkswagen initiative as part of war reparations. By 15 December 1945, Porsche had been requested to offer guidance on Renault’s nearly production-ready 4CV. At this time, Renault had been nationalized under Pierre Lefaucheux, a former resistance fighter and survivor of a concentration camp.
Lefaucheux firmly rejected any claims that Volkswagen had influenced the 4CV’s design and resisted governmental pressure to adopt Porsche’s recommendations during nine swift meetings. Porsche anticipated that production could begin within a year. Shortly thereafter, Porsche was detained on accusations related to war crimes involving forced labor at Volkswagen factories. Although offered release in exchange for a substantial payment, he could only provide half; his son Ferry was sent back to Germany while Ferdinand Porsche spent twenty months imprisoned in Dijon without trial.
The initial two-door prototype was completed in 1942, followed by two additional prototypes over the next three years. Lefaucheux personally conducted tests on the 4CV prototype early in his leadership at Renault in 1945.
Ready for release
In 1940, Louis Renault allegedly instructed his engineering team to "build me a car like the Germans'." Up until 1945, the 4CV sported a 'dummy' grille consisting of six narrow horizontal chrome strips designed to distract from its structural resemblance to the German Volkswagen while evoking the styling of contemporary front-engined American cars.
A significant contributor to the 4CV’s commercial success was Pierre Bézier’s pioneering manufacturing techniques. Beginning his career as a tool setter and advancing to director of production engineering by 1949, Bézier introduced transfer lines—advanced machinery capable of producing most mechanical components for the 4CV. These transfer stations featured multiple work areas equipped with electromagnetic heads (early forms of robotic technology), allowing sequential operations on individual parts and greatly improving manufacturing efficiency.
Launch and market reception
The 4CV was unveiled at the 1946 Paris Motor Show and became available for purchase in 1947, with mass production commencing just before the event at Renault's Billancourt facility. Initial availability was somewhat constrained. Renault’s promotional campaigns highlighted the extensive use of machine tools and advanced assembly techniques, marking the first large-scale postwar automobile manufacturing effort.
The vehicle earned the nickname La motte de beurre (the lump of butter) due to its rounded form and original sand-yellow paint, which originated from surplus German Army supplies. Later, it affectionately became known as quatre pattes (four paws). The car was equipped with a rear-mounted 760 cc four-cylinder engine coupled with a three-speed manual gearbox. In 1950, this engine was updated to a 747 cc "Billancourt" unit delivering .
Despite facing economic difficulties in its early years, by mid-1949 the 4CV had sold 37,000 units, establishing itself as France's best-selling automobile. In West Germany, sales reached 1,760 units in 1950, representing 23% of imported vehicles and ranking second only to the Fiat 500. Production persisted for more than ten years. The engine’s power eventually increased to , supported by higher compression ratios made possible by improved fuel octane levels. Weighing just , the car accelerated from 0 to in 38 seconds and achieved a top speed just below . The engine’s versatility allowed second and top gears to be used effectively between , while first gear—lacking synchromesh—was primarily intended for starting.
Handling
Thanks to its rear-engine layout, the car featured light steering with high gearing; early versions required only 2¼ turns from lock to lock. This responsive steering appealed to driving enthusiasts but called for care on slippery surfaces due to a tendency toward oversteer. Subsequent models increased the lock-to-lock steering turns to 4½.
Broadening the range downmarket
In early 1953, Renault launched a basic 4CV Service variant that omitted luxury elements such as the decorative grille and chrome headlamp trims, narrowed the tyre width, and was offered solely in grey paint. The interior was simplified and featured a two-spoke steering wheel, aiming to price the vehicle below 400,000 Francs. This strategy likely intended to position the 4CV beneath the forthcoming Dauphine in the market hierarchy and broaden Renault’s customer base. Nevertheless, the 4CV Service model was withdrawn within a year, possibly due to competition from the more spacious and less expensive Citroën 2CV.
Replacement
Although replaced directly by the Renault Dauphine in 1956, production of the 4CV continued until 1961. It was also effectively succeeded by the Renault 4, which shared its engine configuration and price category.
Around the world
Primarily manufactured at Renault’s Île Seguin plant near Billancourt, the 4CV was also assembled in seven additional countries. Starting December 1949, right-hand drive versions were assembled at Renault’s Acton factory in West London using predominantly French parts. Other assembly sites included Australia, Belgium, Ireland, Japan—where Hino Motors produced high-quality licensed models—Spain, and South Africa.
Worldwide production reached a total of 1,105,543 units, making the 4CV the first French automobile to surpass one million sales.
- In Spain, FASA-Renault produced the 4CV at Valladolid between 1951 and 1961.
- In Japan, Hino Motors manufactured the Hino Renault 4CV under license from 1953 until it was replaced by the Hino Contessa.
- In Australia, sold as both Renault 760 and later Renault 750, it was available from 1949 through 1961 with local assembly in Sydney from CKD kits.
The versatile design contributed to its popularity in motorsport events. Significantly, it served as the foundation for Alpine’s initial collaboration with Renault—the Alpine A106—which ultimately led to their World Rally Championship triumph with the Alpine A110 in 1973.
Renault Beach Wagon
The Renault Beach Wagon, alternatively called the Renault Jolly, was a distinctive version of the 4CV crafted by Ghia in 1961. A total of 50 units were created using consecutively numbered 4CV chassis, with roughly twelve examples still surviving today.
Renault Fiftie
To commemorate the 50th anniversary of the 4CV in 1996, Renault unveiled the Renault Fiftie concept car. This model featured a two-door layout with a mid-engine configuration, drawing clear inspiration from the original 4CV's design elements.