The Ford Mustang (S550) is the sixth generation of the Ford Mustang, a pony car produced from 2014 until it was replaced by the seventh generation in 2023.

The development of the Mustang began in 2009 under the direction of the chief engineer Dave Pericak and exterior design director Joel Piaskowski. In 2010, design management selected an exterior design theme proposal by Kemal Curić. After four years of development, Ford debuted the Mustang at numerous online media events in December 2013, preceding its public unveiling at the Detroit Auto Show in January 2014. Official manufacture of the sixth generation of the Mustang began at the facility in Flat Rock, Michigan, in August 2014. The car was available as both a coupe and a convertible.

Introduced for the 2015 model year to replace the fifth generation, the Mustang offered multiple engine configurations, including a 3.7-liter V6 engine, a 2.3-liter inline-four EcoBoost engine, and a 5.0-liter GT V8 engine. The V6 was discontinued in 2017. The sixth generation marked the first Mustang to be marketed globally, introducing factory-produced right-hand-drive models alongside the traditional left-hand-drive versions. This was part of the "One Ford" business strategy, which also encompassed models such as the Fiesta, Focus, Fusion/Mondeo, Escape/Kuga, Edge, Transit Connect, and Transit.

Ford released several special editions of the sixth-generation Mustang, including the Shelby GT350 and GT500, the Bullitt edition to commemorate the 50th anniversary of the 1968 film Bullitt, and a model celebrating the Mustang's own 50th anniversary. The car is the recipient of numerous accolades, including Esquire's Car of the Year in 2014, a spot on Car and Drivers 10Best list in 2015 and 2017, and the EyesOn Design award for Best Production Vehicle in 2014. The sixth generation of the Mustang was discontinued in April 2023, with its successor, the S650, beginning production in May.

Background and development The American automaker Ford Motor Company introduced the fifth generation of the Mustang as a concept vehicle at the North American International Auto Show in 2003. Designed by Sid Ramnarace, production of the fifth-generation Mustang began in September 2004 at the facility in Flat Rock, Michigan. The vehicle was praised by car critics; an anonymous writer for Motor Trend described it as a "muscle car legend reborn" and called its stance "aggressive, [...] made stronger by wheels pushed to the corners", while John Phillips of Car and Driver called its design "terrific" and its sound "great", believing that its "'60s feel, overt muscularity, and attainable price, delivers similar charisma [to the 1964 Mustang]".

The fifth-generation model was facelifted in early 2009, the same year that development of a new Mustang model began. The development of this new Mustang was led by chief engineer Dave Pericak, with exterior design directed by Joel Piaskowski. Several designers produced a range of sketches, which were then narrowed down to three final designs for customer feedback to be provided to Piaskowski. In 2010, design management chose an exterior theme proposal by Kemal Curić, who relocated from Europe to Michigan that year to become the exterior design manager at the Dearborn design studio.

The interior design program for the Mustang launched in spring 2010 under the leadership of Doyle Letson and Scott Strong. Early in the development process, a decision was made to equip this generation with an independent rear suspension (IRS), which had previously been standard on the 1999–2004 SVT Cobra. Initially, the plan was to adapt an IRS to the existing S197 platform, which had even been tested with an IRS during its development. However, the inclusion of the IRS led to several platform modifications, including a redesign of the front suspension. An interior design by Sewon Chun, Michael Thomson, and Evan Wilson was selected, and the interior development for the Mustang was completed in June 2012.

Ford presented the sixth-generation Mustang on December 5, 2013, with same-day media events in Dearborn, Michigan, Los Angeles, California, New York City, New York, Barcelona, Spain, Shanghai, China, and Sydney, Australia. The Mustang made its public debut at the North American International Auto Show in January 2014. Over the course of early 2014, the facility in Flat Rock, Michigan, received a US$555 million investment, a portion of which was allocated for Mustang production tooling. At the Flat Rock plant, official series manufacture of the sixth-generation Mustang was initiated on August 28, 2014; a week before this, right-hand drive models began testing. For the first time in its fifty-year history, the Mustang would be available in 120 countries worldwide—including 25 right-hand drive markets—as part of the company's "One Ford" initiative. Manufacture of the right-hand drive Mustangs began on August 24, 2015.

Design

Body Since its 1964 debut, the Mustang has been classified as both a pony car and a muscle car. The sixth-generation Mustang is available in both fastback coupe and convertible body styles. Ford incorporated high-strength steel into the chassis and used aluminum for the front fenders and hood, making the new Mustang both stronger and lighter than its predecessor. The sixth-generation Mustang has a weight distribution of 52 percent at the front and 48 percent at the rear for the EcoBoost version and 53 percent at the front and 47 percent and the rear for the GT. Retaining its predecessor's wheelbase and similar dimensions, the sixth-generation Mustang's front and rear track width have been increased by and , respectively.

The front fascia of the sixth-generation Mustang was inspired by Ford's Evos concept, which was showcased at the Frankfurt Auto Show in 2011. The design features "tri-bar" style taillights that illuminate sequentially as turn signals for North American models. The Mustang incorporates three illuminated daytime running lights on the inner portion of each headlight. The taillight lenses on the U.S.-specification model are red, while export-specification Mustangs feature clear plastic lenses with red illumination, illuminating only the outer portion when the turn signals are activated. The domestic version includes hood vents that are not present on the overseas model due to pedestrian safety regulations. Door mirrors may be larger on the export-specification vehicle due to varying design and safety requirements. The Mustang has a trunk capacity of with its seats up.

The Mustang has the capacity to hold four passengers and uses a rear-wheel drive layout with its engine placed at the front. The vehicle uses a unibody chassis, and is based upon the D2C platform, which it shares with the previous generation. The purpose-built independent rear suspension system incorporates aluminum in the axle housing and rear control arms. To optimize the benefits of the new rear suspension, the Mustang team also redesigned the front suspension, which now features a non-isolated perimeter subframe and double-ball joint MacPherson strut assemblies. The EcoBoost Performance Pack and base GT feature fixed front four-piston calipers and single-piston rear calipers, while the GT Performance Pack includes six-piston Brembo front calipers with 15-inch rotors and a rear single-piston caliper with a larger 13-inch rotor.

In addition to the coupe, Ford produced a convertible version of the Mustang. This new top, developed in partnership with supplier Webasto, is completely electric, making it quieter, slimmer, and simpler than the previous electro-hydraulic system. The top raises and lowers in nearly half the time—seven to ten seconds to lower, and nine to twelve seconds to raise, depending on engine-on or battery-only operation—though it operates only at speeds below . While a power pull-down mechanism was considered for single-button operation, it was deemed too expensive. Improved water and wind seals were also introduced with the new folding top mechanism. The car has a trunk space of , 19 percent more than the previous Mustang convertible.

Interior and technology The Mustang's interior design team developed two full-scale clay models before deciding on the final concept. The first model, an evolution of its predecessor, focused on premium materials. The second, which ultimately influenced the production design, featured an aircraft-inspired theme with a long, wing-shaped aluminum span extending from door to door. The aeronautical theme was chosen not only for its aesthetic appeal but also for its practical design, which allowed for a shallower dashboard—an improvement absent in the alternative concept. Letson noted that, "We came up with this as a first for Ford, which was putting the [knee] airbag in the glove-box door. When we came up with this concept, it slimmed everything up considerably".

Standard features for all sixth-generation Mustangs include proximity key entry with keyless entry, a push-button start system, an AM/FM stereo with a single-disc CD/MP3 player, and a color liquid-crystal display. Additional features include the Ford Sync system with Bluetooth hands-free phone capabilities, USB/iPod auxiliary audio input jacks, an electronic traction control system, an electronic stability control system, an anti-lock braking system, and a rear backup camera system. The Mustang is equipped with dual-stage driver and passenger seat-mounted side airbags, dual-stage front airbags for both the driver and passenger, curtain airbags for both the first and second rows, driver and passenger knee airbags, and an airbag occupancy sensor.

Optional features include SiriusXM satellite radio, the MyFord Touch—replaced by the Sync 3 in 2016—infotainment system with an eight-inch touchscreen, support for Apple CarPlay and Android Auto (both introduced in 2017), and enhanced voice control. Additional options included a nine-speaker sound system and a twelve-speaker Shaker Pro surround-sound system.

Powertrains

For its launch for the 2015 model year, the Mustang offered three engine options: a 3.7-liter V6 for the V6 model (discontinued in 2017), a 2.3-liter inline-four for the EcoBoost model, and a 5.0-liter V8 for the GT model.

3.7-liter V6 The V6, codenamed Cyclone, was the base engine in the Mustang lineup. It produces a power output of at 6,500 revolutions per minute (rpm) and a torque output of at 4,000 rpm, sufficient to give the car a zero to acceleration of 5.5 seconds and a maximum speed of . Compared to the 2014's 3.7-liter engine, the torque peak is 250 rpm lower, and maximum power has decreased by .

The Getrag-supplied MT82 six-speed manual transmission has updated low-drag synchronizers and a stiffer linkage for improved shift quality. Ford also redesigned the final drive, incorporating 9.8-inch differential internals within an 8.8-inch casing with a stronger ring, pinion, and housing. Manual-transmission models use an iron differential carrier to handle the high-impact loads of high-rpm shifts, while models with a six-speed automatic transmission models feature an aluminum carrier. Both manual and automatic versions include an aluminum differential cover, with the iron carrier weighing more than the aluminum one. According to the United States Environmental Protection Agency (EPA), the V6 model has a fuel economy rating of in the city and on the highway. The V6 Mustang was discontinued in January 2017 as part of the 2018 model year refresh.

2.3-liter I4