The Ford Mustang Convertible VI 3.7 V6 (304 Hp) Automatic, produced from 2015 through 2017, represents a pivotal entry point into the sixth generation (S550) of Ford’s iconic pony car. This iteration marked the first Mustang designed for global sales and featured a significant engineering upgrade with the adoption of an independent rear suspension across the entire lineup. The 3.7L V6 Automatic convertible offered a compelling blend of classic Mustang aesthetics, modern performance, and open-air driving enjoyment, targeting buyers seeking a stylish and accessible sports car experience. It served as the base model convertible, positioned below the more powerful V8-equipped GT variants.
Powertrain & Engine Architecture
The heart of the Ford Mustang Convertible VI 3.7 V6 Automatic is Ford’s Duratec 37 engine, a 3.7-liter (3726 cc or 227.37 cubic inches) naturally aspirated V6. This engine, configured with a 60-degree V-angle, features four valves per cylinder and a robust aluminum alloy block and cylinder heads. It produced 304 horsepower at 6500 rpm and 269.95 lb-ft of torque at 4000 rpm. The Duratec 37 utilized a dual overhead camshaft (DOHC) valvetrain, optimizing airflow and combustion efficiency. Fuel delivery was managed by a multi-port fuel injection system, ensuring precise fuel metering for both performance and economy.
Power is transmitted to the rear wheels via a smooth-shifting 6-speed automatic transmission (6F55E). This transmission was chosen for its ease of use and comfort, appealing to buyers who prioritized a relaxed driving experience. The transmission featured a torque converter for smooth launches and gear changes. The powertrain layout is front-engine, longitudinal, with rear-wheel drive, maintaining the classic Mustang driving dynamic. The 6-speed automatic offered a selectable Sport mode, altering shift points for more aggressive acceleration.
Driving Characteristics
The 3.7L V6 Automatic Mustang Convertible offered a distinct driving experience compared to its higher-performance siblings. While lacking the raw power of the V8 GT, the V6 provided ample acceleration for everyday driving and spirited cruising. The automatic transmission, while smooth, did result in a slight reduction in responsiveness compared to the available 6-speed manual. The gear ratios were tuned for a balance of acceleration and fuel efficiency. First gear was optimized for quick off-the-line acceleration, while higher gears were geared for comfortable highway cruising. The independent rear suspension significantly improved handling and ride quality compared to previous Mustang generations, providing a more controlled and comfortable ride, especially over uneven road surfaces. Compared to the manual transmission V6, the automatic offered a more relaxed driving experience, but at the expense of some driver engagement.
Equipment & Trim Levels
The Mustang Convertible VI 3.7 V6 Automatic typically came standard with features such as air conditioning, power windows and locks, a basic infotainment system with a touchscreen display, and cloth upholstery. Standard safety features included ABS, traction control, and multiple airbags. Optional extras included leather upholstery, upgraded sound systems (such as the Shaker system), heated and cooled front seats, a premium wheel package, and various appearance enhancements. The Mustang offered several trim packages, such as the EcoBoost Premium package, which added features like leather seats, upgraded audio, and automatic climate control. The convertible top was power-operated and featured a glass rear window. Interior color options typically included black, gray, and saddle brown.
Chassis & Braking
The S550 Mustang Convertible utilized a modern chassis design, featuring a MacPherson strut front suspension and an independent rear suspension (IRS). The IRS, a significant upgrade over previous generations, consisted of multi-link suspension with coil springs and stabilizer bars. This configuration dramatically improved ride quality and handling. The braking system consisted of ventilated disc brakes on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) was standard. The front brakes featured larger rotors than the rear brakes. The steering system was electric power-assisted rack-and-pinion steering, offering precise control and a customizable steering feel. The convertible’s chassis was reinforced to compensate for the loss of structural rigidity due to the open-top design.
Market Reception & Comparison
Critics generally praised the S550 Mustang Convertible VI 3.7 V6 Automatic for its improved ride quality, handling, and overall refinement compared to previous generations. The V6 engine was considered adequate for most drivers, providing sufficient power for enjoyable cruising and occasional spirited driving. However, some reviewers noted that the engine lacked the visceral excitement of the V8 GT. Fuel economy was considered respectable for a performance convertible, averaging around 22 mpg combined. Compared to the V8 GT, the V6 offered a more affordable entry point into Mustang ownership, with lower insurance costs and better fuel efficiency. The Chevrolet Camaro V6 Convertible and Dodge Challenger SXT Convertible were the primary competitors, each offering a different blend of performance, style, and features. The Mustang generally appealed to buyers seeking a more balanced and refined driving experience, while the Camaro offered a more aggressive and track-focused feel, and the Challenger prioritized comfort and retro styling.
Technical Specifications
| Category | Specification |
| General Information | |
| Brand | Ford |
| Model | Mustang |
| Generation | Mustang Convertible VI |
| Type (Engine) | 3.7 V6 (304 Hp) Automatic |
| Start of Production | 2015 |
| End of Production | 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body Type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Engine Specifications | |
| Engine Model/Code | Duratec 37 |
| Engine Layout | Front, Longitudinal |
| Engine Displacement | 3726 cm3 (227.37 cu. in.) |
| Number of Cylinders | 6 |
| Engine Configuration | V-engine |
| Cylinder Bore | 95.5 mm (3.76 in.) |
| Piston Stroke | 86.7 mm (3.41 in.) |
| Compression Ratio | 10.5:1 |
| Number of Valves per Cylinder | 4 |
| Fuel Injection System | Multi-port manifold injection |
| Engine Aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Performance Specs | |
| Power | 304 Hp @ 6500 rpm |
| Power per Liter | 81.6 Hp/l |
| Torque | 366 Nm @ 4000 rpm (269.95 lb.-ft. @ 4000 rpm) |
| Fuel Economy & Capacities | |
| Fuel Type | Petrol (Gasoline) |
| Fuel Consumption (Urban) | 12.4 l/100 km (19 US mpg) |
| Fuel Consumption (Extra Urban) | 8.4 l/100 km (28 US mpg) |
| Fuel Consumption (Combined) | 10.7 l/100 km (22 US mpg) |
| Engine Oil Capacity | 5.7 l (6.02 US qt) |
| Coolant Capacity | 11.7 l (12.36 US qt) |
| Fuel Tank Capacity | 60 l (15.85 US gal) |
| Dimensions & Aerodynamics | |
| 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 | 11.12 m (36.48 ft.) |
| Drivetrain, Brakes, and Suspension | |
| Drivetrain Architecture | Internal combustion engine drives the rear wheels. |
| Drive Wheel | Rear wheel drive |
| Number of Gears and Type of Gearbox | 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 |
| Tires Size | 235/55 R17 |
| Wheel Rims Size | 17 inches |
Legacy
The Ford Mustang Convertible VI 3.7 V6 Automatic holds a significant place in the Mustang’s evolution. It represented a crucial step towards a more globally competitive and refined Mustang, while still retaining the core elements that define the brand. While the 3.7L V6 was eventually replaced by the more modern and efficient 2.3L EcoBoost four-cylinder engine, the V6 remains a popular choice in the used car market, offering a compelling combination of affordability, style, and reliability. The 6-speed automatic transmission, while not as engaging as the manual, has proven to be durable and dependable. Overall, the 2015-2017 Mustang V6 Convertible is considered a well-rounded and enjoyable sports car that provides a taste of the Mustang experience at a reasonable price point.
