The Ford Mustang Convertible V 4.0 i V6 12V (212 hp) represents a significant iteration of Ford’s iconic pony car, produced between 2005 and 2009. This variant occupied a middle-ground position within the fifth-generation (S197) Mustang lineup, offering a balance between affordability, reasonable performance, and the open-air experience of a convertible. It served as a more accessible alternative to the higher-performance GT models with the V8 engine, and a step up from any potential base-level four-cylinder offerings (which were not widely available in the US market during these years). The Mustang Convertible V6 was built on the D2C platform, a revised version of the SN-95 platform, and aimed to broaden the Mustang’s appeal to a wider range of buyers.
Powertrain & Engine Architecture
At the heart of the Mustang Convertible V6 is Ford’s Cologne 4.0L V6 engine, designated as the engine code 4.0L OHV. This engine, a 60-degree V6, had been a mainstay in Ford’s lineup for several years, undergoing revisions for improved refinement and power delivery. It features a cast iron block with aluminum cylinder heads, and utilizes a single overhead camshaft (SOHC) design with two valves per cylinder (12V total). The engine employs multi-port fuel injection, delivering fuel directly into the intake ports, and is naturally aspirated.
The 4.0L V6 produces 212 horsepower at 5200 rpm and 325 Nm (239.71 lb-ft) of torque at 3500 rpm. The compression ratio is 9.7:1. The engine’s bore and stroke measure 100.4 mm (3.95 in) and 84.4 mm (3.32 in) respectively, resulting in a displacement of 4009 cm³ (244.64 cu. in). Engine oil capacity is 4.7 liters (4.97 US qt / 4.14 UK qt), and the cooling system requires 11.8 liters (12.47 US qt / 10.38 UK qt) of coolant.
The 2005-2009 Mustang Convertible V6 was primarily offered with a 5-speed manual transmission. However, a 5-speed automatic transmission was also available, and this configuration is the focus of this article. The automatic transmission, a Ford 5R55E, is a five-speed electronically controlled unit known for its relatively smooth operation and durability. Gear ratios were optimized for a balance of acceleration and fuel economy, with a final drive ratio typically around 3.55:1. The automatic transmission contributed to a slightly slower 0-60 mph time compared to the manual, but offered greater convenience for everyday driving.
Driving Characteristics
The 2005-2009 Mustang Convertible V6 with the automatic transmission delivers a comfortable and accessible driving experience. Acceleration from 0 to 60 mph takes approximately 6.7 seconds, and the car can reach a top speed of 180 km/h (111.85 mph). While not a performance powerhouse, the 4.0L V6 provides adequate power for merging onto highways and passing slower traffic. The automatic transmission shifts smoothly, although it can sometimes feel hesitant during quick acceleration. The power delivery is relatively linear, with the peak torque available at a reasonably low 3500 rpm. Compared to the V8-powered GT models, the V6 offers significantly less raw power, but it also provides better fuel economy and a lighter front-end weight, which can improve handling balance. The convertible top adds weight, impacting handling slightly compared to the coupe version.
Equipment & Trim Levels
The Mustang Convertible V6 typically came standard with features such as air conditioning, power windows and locks, a CD player, and basic cloth upholstery. Safety features included dual front airbags and anti-lock brakes. The base trim level offered a relatively spartan interior, but several optional packages were available to enhance comfort and convenience. These included leather upholstery, upgraded sound systems, power driver’s seat, and a premium trim package with unique interior accents. Popular options also included a color-matched hardtop for improved weather protection and security. The convertible top itself was a manually operated cloth top, although power-operated tops were available as an option.
Chassis & Braking
The Mustang Convertible V6 utilizes a traditional front engine, rear-wheel-drive layout. The front suspension consists of a strut-type independent suspension, while the rear suspension employs a three-link solid axle design with coil springs. The chassis was reinforced compared to earlier Mustang generations to improve rigidity, particularly important for a convertible. Braking duties are handled by disc brakes on all four wheels. The front brakes are typically larger in diameter than the rear brakes. Steering is provided by a rack-and-pinion system. The standard tire size is 215/65 R16. The rear drums were sometimes used on lower trim levels, but the disc brakes were more common on the convertible models.
Market Reception & Comparison
The Mustang Convertible V6 was generally well-received by automotive critics as an affordable and enjoyable entry point into the Mustang family. It was praised for its comfortable ride, decent performance, and classic Mustang styling. However, some critics noted that the V6 engine lacked the visceral excitement of the V8. Fuel economy was a strong point, with the V6 achieving approximately 12.4 l/100 km (19 US mpg / 22.8 UK mpg) in urban driving and 10.2 l/100 km (23.1 US mpg / 27.7 UK mpg) on the highway. Compared to the Mustang GT, the V6 offered significantly better fuel economy, but at the expense of performance. Reliability was generally good, although some owners reported minor issues with the automatic transmission and convertible top mechanism. The V6 models were also generally less expensive to maintain than the V8 models, due to lower parts costs and less stress on the drivetrain.
Technical Specifications
| Brand | Ford |
| Model | Mustang |
| Generation | Mustang Convertible V |
| Type (Engine) | 4.0 i V6 12V (212 Hp) |
| Start of production | 2005 year |
| End of production | 2009 year |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 12.4 l/100 km (19 US mpg / 22.8 UK mpg) |
| Fuel consumption (extra urban) | 10.2 l/100 km (23.1 US mpg / 27.7 UK mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7 sec |
| Acceleration 0 – 62 mph | 7 sec |
| Acceleration 0 – 60 mph | 6.7 sec |
| Maximum speed | 180 km/h (111.85 mph) |
| Weight-to-power ratio | 7.7 kg/Hp |
| Weight-to-torque ratio | 5 kg/Nm |
| Power | 212 Hp @ 5200 rpm |
| Torque | 325 Nm @ 3500 rpm (239.71 lb.-ft. @ 3500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | Cologne |
| Engine displacement | 4009 cm3 (244.64 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 100.4 mm (3.95 in.) |
| Piston Stroke | 84.4 mm (3.32 in.) |
| Compression ratio | 9.7:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 4.7 l (4.97 US qt | 4.14 UK qt) |
| Coolant | 11.8 l (12.47 US qt | 10.38 UK qt) |
| Kerb Weight | 1625 kg (3582.51 lbs.) |
| Trunk (boot) space | 275 l (9.71 cu. ft.) |
| Fuel tank capacity | 61 l (16.11 US gal | 13.42 UK gal) |
| Length | 4765 mm (187.6 in.) |
| Width | 1877 mm (73.9 in.) |
| Height | 1415 mm (55.71 in.) |
| Wheelbase | 2720 mm (107.09 in.) |
| Front track | 1585 mm (62.4 in.) |
| Rear track | 1600 mm (62.99 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 5 |
| Gearbox type | Automatic transmission |
Legacy
The 2005-2009 Ford Mustang Convertible V6 with the automatic transmission remains a popular choice in the used car market. Its affordability, relatively good reliability, and classic Mustang styling make it an attractive option for buyers seeking an open-air cruiser. The Cologne 4.0L V6 engine is known for its durability, although regular maintenance is essential to prevent issues. The 5R55E automatic transmission is also generally reliable, but it’s important to check for signs of wear or slippage. Overall, this Mustang variant represents a solid value proposition for those looking for a stylish and enjoyable convertible experience without breaking the bank.
