In June 2020, the third-generation C4 was released in the form of coupe SUV, abandoning the traditional C-segment hatchback/saloon body style.

At the Geneva Motor Show in 2004, a concept from the Citroën line's definitive made-bodied coupé revealed the willingness of the French company to employ it in competition.

The C4's design was created by a team that included Donato Coco, Jean Pierre Ploué and Bertrand Rapatel.

[5][failed verification] Building on the floor of its cousin, the Peugeot 307, the C4 was immediately made available in two body variants: five-door hatchback and three-door coupé.

The saloon is much more rounded and features softer shapes, so they can boast a Cd of just 0.28, while the coupe is more angular, with a rear split into two parts, including lights.

These two versions of the C4 Picasso are more detached, taking over the grille of the saloon and coupe, but the cut of the headlamps are different, aesthetically combining corners and curves.

There are laminated side windows and exterior mirrors, with a casing specially designed to prevent wind noise and improve the comfort inside.

A longer four-door saloon version with a different rear end is also built and sold in China as the Citroën C-Triomphe.

For example, the car features the "lane departure warning system" (only in the top-of-the-range "exclusive" model), which alerts the driver if he or she crosses a road marking without using the turn signals; directional headlights; perfume dispenser integrated into the ventilation system; translucent dashboard; transparent glass roof; electronic stability program (ESP), and a fixed steering wheel hub, which lets the driver operate several functions of the car without removing their hands from the wheel.

Because the hub maintains a constant position, the airbag can be optimally shaped to spread the load across the greatest possible area of the driver's body in a collision, thus reducing the chances of serious injury.

In addition, the car features an innovative centrally mounted translucent LCD speedometer display that remains clearly visible in all lighting conditions.

In September 2007, a USB box accessory[6] (Ref: 9702.EZ) was released to enable full iPod connectivity with the standard RD4 radio.

[7] Both hatchback and coupé were subject to a slight cosmetic makeover that involved the front end,[8] which now sported a "mouth" and larger trapezoid shape.

The redesign led to a slight lengthening of the car body, and was the occasion for more news: from the mechanical point of view was the arrival of the 1.6 Prince, with variable valve timing and aspiration, and turbocharged and direct injection, already mounted on the Peugeot 207 and 308, as well as the Mini.

The saloon version was introduced as the Citroën C-Triomphe, a mid-size saloon automobile produced from April 2006 for the Chinese market by Dongfeng Peugeot-Citroën Automobile,[9][10] a joint venture between the French PSA Group (Peugeot-Citroën) and the Chinese manufacturer Dongfeng.

The C-Triomphe has a number of unique features, such as an integrated air freshener, which allows the driver to choose the scent of the interior.

Although the advertisement was produced by a music group from Canada, and the scenery was downtown Vancouver, the car is not available in North America.

The robot struts through town showing off, accompanied by a cover version of the Bee Gees song "Stayin' Alive" by MC Lita.

In July 2007, filming began in São Paulo, Brazil, for a commercial for South America, starring North American actor Kiefer Sutherland and Argentine actress Araceli González.

[22] After its launch, it debuted at the Paris Motor Show in October 2010 and went on sale in Europe under the Citroën brand one month later.

In general, the lines are less rounded, the front is characterized by large clusters with aggressive design "cut" on the top and a "step" on the underside.

The dashboard, with the now ever-present display, is also modern in styling, and has some ribs, especially at the top, which complement the external lines of the bodywork.

[23] The second series of C4 is provided with specific tires with low rolling resistance, and out of the 200 kg of polymer used in each sample, about 30 are environmentally friendly.

To make the car more comfortable, suspension geometry was slightly modified, and new bushes are used, albeit still MacPherson struts in front and torsion beam at the rear.

The C4 saloon is manufactured in El Palomar, Argentina, and was planned for launch in the Latin American market in late 2013.

At the 2024 Paris Motor Show, Citroën unveiled the facelifted models of both the C4 and C4 X which are inspired from the Oli concept car previewed in 2022.

Inside, there are new Advanced Comfort seats with thicker foam padding, a new 7" digital instrument cluster and the touchscreen infotainment system receives updated software.

Having once been earmarked for a late 2005 competitive debut, the decision by the controlling PSA Group to withdraw both Citroën and stablemates Peugeot from works participation at the end of the 2005 season led to the momentary abandonment of the project.

Since then, however, the marque etched in a comeback for the 2007 season, during which a revived C4 WRC was scheduled for its official debut, with the then-thrice world champion Sébastien Loeb as the official first driver, and Dani Sordo, the 2005 Junior World Rally Champion, later confirmed alongside him after an impressive 2006 season for the Spaniard.

In their official debut at the 2007 Monte Carlo Rally, the two C4 WRCs finished 1–2, with Loeb winning ahead of Sordo.