Ford Mustang Convertible VI GT 5.0 V8 (426 Hp) Automatic: A Global Icon with American Muscle
The Ford Mustang, an automotive legend since its introduction in 1964, entered its sixth generation, internally codenamed S550, with a significant global ambition. The Ford Mustang Convertible VI GT 5.0 V8 (426 Hp) Automatic, produced from 2015 to 2017, represented a pivotal moment for the iconic pony car. For the first time, the Mustang was engineered from the ground up to be a true world car, sold in over 100 countries. This generation also marked the long-awaited inclusion of an independent rear suspension across the lineup, a substantial technological leap from its predecessors’ live axle setup, enhancing both ride comfort and handling dynamics. The GT Convertible variant, in particular, offered the quintessential American muscle car experience with the added exhilaration of open-air driving, powered by the formidable 5.0-liter Coyote V8 engine and paired with a smooth automatic transmission.
Positioned squarely in the performance convertible segment, the Mustang Convertible VI GT appealed to enthusiasts seeking a blend of raw power, distinctive styling, and modern amenities. It carried forward the Mustang’s legacy of accessible performance while integrating contemporary engineering and design philosophies, making it a formidable competitor both domestically and in international markets where it quickly garnered a loyal following. The S550 generation, and specifically this GT 5.0 V8 convertible, symbolized Ford’s commitment to evolving a beloved icon for a new era of automotive enthusiasts worldwide.
Engine and Performance of the Ford Mustang Convertible VI GT 5.0 V8
At the heart of the Ford Mustang Convertible VI GT 5.0 V8 (426 Hp) Automatic lies the venerated “Coyote” 5.0-liter V8 engine. This naturally aspirated powerhouse, with its DOHC (Dual Overhead Camshaft) valvetrain and multi-port manifold injection system, delivered a robust 426 horsepower at 6500 rpm. The engine’s architecture, featuring an 11:1 compression ratio and eight cylinders arranged in a V-configuration, was meticulously engineered for both high-revving performance and a broad torque band. Peak torque arrived at 390.17 lb.-ft. (529 Nm) at 4250 rpm, providing substantial thrust across the rev range, making for exhilarating acceleration and confident highway passing.
Power was efficiently managed by a 6-speed automatic transmission, which offered smooth shifts and contributed to the car’s dual personality as both a thrilling performance machine and a comfortable cruiser. The powertrain architecture adhered to the classic American muscle car formula: an internal combustion engine mounted longitudinally in the front, driving the rear wheels. This rear-wheel-drive setup ensured a traditional, engaging driving experience, allowing for predictable handling characteristics and the ability to put the V8’s power down effectively. Despite its performance orientation, Ford engineered the Coyote V8 for reasonable efficiency for its class, with a combined fuel economy rating of approximately 18 US mpg (13.1 liters per 100 km), running on gasoline.
The engine’s displacement of 4951 cm³ (302.13 cu. in.) paid homage to the “302” Mustangs of yesteryear, while its modern design and output per liter (86 Hp/l) showcased contemporary engineering prowess. With an engine oil capacity of 8.03 US quarts and a coolant capacity of 13.61 US quarts, the GT V8 was built for durability and sustained performance, capable of handling the demands of spirited driving.
Design and Features
The sixth-generation Ford Mustang Convertible VI GT showcased a sleek, contemporary design while retaining unmistakable Mustang styling cues. Its Cabriolet body type, featuring two doors and a comfortable four-seat configuration, offered an ideal blend of sportiness and practicality for open-air motoring enthusiasts. The car’s dimensions, measuring 188.31 inches in length, 75.39 inches in width (81.89 inches with mirrors folded), and 54.88 inches in height, gave it a strong, planted stance. A wheelbase of 107.09 inches contributed to both stability and interior space, ensuring a comfortable ride for occupants.
Aerodynamically, the Mustang Convertible VI GT achieved a drag coefficient (Cd) of 0.35, a respectable figure for a performance convertible, aiding in fuel efficiency and high-speed stability. The car’s exterior was characterized by its aggressive front fascia, sculpted lines, and the signature tri-bar taillights, all contributing to its modern yet instantly recognizable identity. The standard 18-inch wheels, fitted with 235/50 R18 tires, complemented the car’s athletic appearance and provided ample grip.
Underneath, the S550 generation’s most significant engineering upgrade was the introduction of an independent rear suspension, replacing the solid rear axle of previous generations. This change dramatically improved ride quality, handling, and stability, particularly over uneven surfaces and through corners. The front and rear brakes were ventilated discs, ensuring powerful and consistent stopping performance, further enhanced by an Anti-lock Braking System (ABS). Steering was handled by an electric rack and pinion system, offering precise control and customizable feel, a feature that contributed to the car’s refined driving dynamics.
Inside, the cabin blended retro-inspired elements with modern technology. While specific luxury features aren’t detailed in the raw data, for a GT model of this era, standard amenities would typically include power-adjustable seats, climate control, and a sophisticated infotainment system, all designed to enhance the driving and passenger experience in this spirited convertible.
Technical Specifications
| Category | Specification |
|---|---|
| Brand | Ford |
| Model | Mustang Convertible VI |
| Type (Engine) | GT 5.0 V8 (426 Hp) Automatic |
| Production Years | 2015 – 2017 |
| Powertrain Architecture | Internal Combustion Engine |
| Body Type | Cabriolet (Convertible) |
| Seats | 4 |
| Doors | 2 |
| Performance Specs | |
| Fuel Consumption (Urban) | 15.7 l/100 km (15 US mpg) |
| Fuel Consumption (Extra Urban) | 9.8 l/100 km (24 US mpg) |
| Fuel Consumption (Combined) | 13.1 l/100 km (18 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Engine Specs | |
| Power | 426 Hp @ 6500 rpm |
| Power per liter | 86 Hp/l |
| Torque | 529 Nm (390.17 lb.-ft.) @ 4250 rpm |
| Engine Layout | Front, Longitudinal |
| Engine Model/Code | Coyote |
| Engine Displacement | 4951 cm³ (302.13 cu. in.) |
| Number of Cylinders | 8 |
| Engine Configuration | V-engine |
| Cylinder Bore | 92.2 mm (3.63 in.) |
| Piston Stroke | 92.7 mm (3.65 in.) |
| Compression Ratio | 11:1 |
| Valves per Cylinder | 4 |
| Fuel Injection System | Multi-port manifold injection |
| Engine Aspiration | Naturally aspirated |
| Valvetrain | DOHC |
| Engine Oil Capacity | 7.6 l (8.03 US qt) |
| Coolant Capacity | 12.88 l (13.61 US qt) |
| Space, Volume and Weights | |
| Fuel Tank Capacity | 60 l (15.85 US gal) |
| Dimensions | |
| Length | 4783 mm (188.31 in.) |
| Width | 1915 mm (75.39 in.) |
| Width with mirrors folded | 2080 mm (81.89 in.) |
| Height | 1394 mm (54.88 in.) |
| Wheelbase | 2720 mm (107.09 in.) |
| Front Track | 1582 mm (62.28 in.) |
| Rear Track | 1648 mm (64.88 in.) |
| Drag Coefficient (Cd) | 0.35 |
| Minimum Turning Circle | 11.52 m (37.8 ft.) |
| Drivetrain, Brakes and Suspension Specs | |
| Drivetrain Architecture | ICE drives rear wheels |
| Drive Wheel | Rear wheel drive |
| Number of Gears / Gearbox Type | 6 gears, automatic transmission |
| Front Brakes | Ventilated discs |
| Rear Brakes | Ventilated discs |
| Assisting Systems | ABS (Anti-lock braking system) |
| Steering Type | Steering rack and pinion |
| Power Steering | Electric Steering |
| Tire Size | 235/50 R18 |
| Wheel Rim Size | 18 inches |
Legacy and Market Impact
The Ford Mustang Convertible VI GT 5.0 V8 (426 Hp) Automatic, part of the S550 generation, left an indelible mark on the automotive landscape, particularly for its role in solidifying the Mustang’s global presence. Prior to this generation, the Mustang was largely an American phenomenon, with limited official sales outside North America. The S550 changed that, being the first Mustang designed from inception to meet global regulations and preferences, thereby expanding its reach into European, Asian, and Australian markets.
Its reputation as an affordable, powerful, and stylish performance car only grew with this generation. The inclusion of an independent rear suspension was a game-changer, silencing critics who had long pointed to the live axle as a limiting factor in the Mustang’s handling prowess. This technological upgrade not only improved the car’s dynamic capabilities but also enhanced its appeal to a broader audience accustomed to more sophisticated suspension setups in competing sports cars. The convertible variant, in particular, capitalized on the emotional appeal of open-top driving, combining the roar of the Coyote V8 with the freedom of the open road.
In the fiercely competitive American market, the Mustang Convertible VI GT continued its traditional rivalry with the Chevrolet Camaro and Dodge Challenger, solidifying its position within the “pony car” segment. However, its global availability pitted it against a wider array of performance convertibles, including models like the BMW 4 Series Convertible and Audi A5 Convertible in international markets. While these European rivals often emphasized luxury and refinement, the Mustang countered with its undeniable V8 charisma, muscular styling, and a price point that offered exceptional value for its performance.
The 2015-2017 Ford Mustang Convertible VI GT 5.0 V8 cemented its historical significance by successfully modernizing an American icon without sacrificing its core identity. It demonstrated that a car steeped in heritage could evolve to meet contemporary demands for technology, handling, and global appeal, all while retaining the thrilling, unadulterated performance that defines a Mustang GT. It paved the way for future generations of the Mustang, ensuring its legend would continue to captivate enthusiasts around the world for years to come.
