The Mini Convertible (R57) Cooper S 1.6, produced from 2012 to 2015, represents the facelifted version of the second-generation Mini Convertible. Positioned as the performance-oriented variant within the R57 range, it offered a more engaging driving experience than the standard Cooper models. This iteration built upon the success of the original R57, launched in 2009, addressing some earlier criticisms and refining the overall package. The facelift, introduced in 2011 for the 2012 model year, brought styling updates, interior enhancements, and importantly, a new generation of engines – most notably the N18 series – to the lineup. The Cooper S 1.6 served as a popular choice for buyers seeking a sporty and stylish open-top car, blending Mini’s iconic design with a respectable level of performance.
Technical Specifications
| Brand | Mini |
| Model | Convertible |
| Generation | Convertible (R57, Facelift 2011) |
| Type (Engine) | Cooper S 1.6 (184 Hp) |
| Start of production | 2012 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 7.5 l/100 km (31.4 US mpg) |
| Fuel consumption (extra urban) | 5.1 l/100 km (46.1 US mpg) |
| Fuel consumption (combined) | 6 l/100 km (39.2 US mpg) |
| CO2 emissions | 139 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7.3 sec |
| Acceleration 0 – 62 mph | 7.3 sec |
| Acceleration 0 – 60 mph | 6.9 sec |
| Maximum speed | 225 km/h (139.81 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 6.7 kg/Hp |
| Weight-to-torque ratio | 4.7 kg/Nm |
| Power | 184 Hp @ 5500 rpm |
| Power per litre | 115.1 Hp/l |
| Torque | 260 Nm @ 1700-4500 rpm (191.77 lb.-ft.) |
| Engine layout | Front, Transverse |
| Engine Model/Code | N18B16A |
| Engine displacement | 1598 cm3 (97.52 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 77 mm (3.03 in.) |
| Piston Stroke | 85.8 mm (3.38 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 4.2 l (4.44 US qt | 3.7 UK qt) |
| Coolant | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Kerb Weight | 1230 kg (2711.69 lbs.) |
| Max. weight | 1660 kg (3659.67 lbs.) |
| Max load | 430 kg (947.99 lbs.) |
| Trunk (boot) space – minimum | 125 l (4.41 cu. ft.) |
| Trunk (boot) space – maximum | 660 l (23.31 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Length | 3729 mm (146.81 in.) |
| Width | 1683 mm (66.26 in.) |
| Height | 1414 mm (55.67 in.) |
| Wheelbase | 2467 mm (97.13 in.) |
| Front track | 1453 mm (57.2 in.) |
| Rear (Back) track | 1461 mm (57.52 in.) |
| Ride height (ground clearance) | 130 mm (5.12 in.) |
| Minimum turning circle | 10.7 m (35.1 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears | 6 |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Tires size | 195/55 R16 87V |
| Wheel rims size | 6.5J x 16 LM |
Powertrain & Engine Architecture
The heart of the Cooper S 1.6 was the N18B16A engine, a 1.6-liter turbocharged inline-four cylinder. This engine represented a significant upgrade over the previous generation’s N14 engine, featuring improvements to fuel efficiency, reliability, and overall performance. The N18 utilized direct fuel injection, a twin-scroll turbocharger, and variable valve timing (Double VANOS) to deliver 184 horsepower at 5500 rpm and 260 Nm (192 lb-ft) of torque between 1700 and 4500 rpm. The turbocharger’s design minimized turbo lag, providing a more responsive driving experience. The engine was transversely mounted at the front of the vehicle. The standard transmission was a six-speed automatic, although a six-speed manual was also available. The automatic transmission was designed to provide smooth shifts and contribute to improved fuel economy.
Driving Characteristics
The 184 hp Cooper S 1.6 Automatic offered a spirited driving experience, though not as raw or immediate as the manual transmission variants. The automatic transmission, while smooth, did introduce a slight delay in response compared to the direct engagement of a manual gearbox. Acceleration from 0 to 60 mph took approximately 6.9 seconds, making it a competitive performer in its class. The turbocharger provided a noticeable boost in power, particularly in the mid-range, allowing for confident overtaking maneuvers. The front-wheel-drive layout, combined with the relatively modest power output, meant that torque steer was manageable, but present under hard acceleration. The suspension, tuned for a balance between comfort and handling, provided a reasonably compliant ride, even on less-than-perfect road surfaces.
Equipment & Trim Levels
The Cooper S 1.6 Automatic typically came well-equipped, reflecting its position as a premium variant. Standard features included air conditioning, power windows and locks, a multi-function steering wheel, and a basic audio system. Upholstery was typically cloth, though leather options were available. The facelifted R57 models benefited from an updated interior design with improved materials and a more modern dashboard layout. Optional extras included a premium Harman Kardon audio system, navigation, heated seats, and a panoramic sunroof. The “Chili Pack” was a popular option package, adding sport seats, a sport steering wheel, and other aesthetic enhancements.
Chassis & Braking
The R57 Cooper S 1.6 featured independent suspension all around, with McPherson struts at the front and a multi-link setup at the rear. This configuration provided good handling characteristics and a relatively comfortable ride. Brakes consisted of ventilated discs at the front and solid discs at the rear. Anti-lock Braking System (ABS) was standard. The chassis was reinforced compared to the standard Cooper models to handle the increased power output of the S variant. Stabilizer bars were fitted front and rear to reduce body roll during cornering.
Market Reception & Comparison
The Cooper S 1.6 Automatic was generally well-received by automotive critics. It was praised for its stylish design, engaging driving dynamics, and refined interior. However, some reviewers noted that the automatic transmission dulled the driving experience compared to the manual. Compared to the standard Cooper 1.6, the S model offered a significant performance upgrade, justifying its higher price tag. Against competitors like the Fiat 500C Abarth and the Volkswagen Beetle Cabriolet, the Mini Convertible Cooper S 1.6 stood out for its unique character and premium feel. Fuel economy was respectable for a performance-oriented convertible, averaging around 39.2 US mpg in combined driving.
Legacy
The N18 engine, while generally reliable, has been known to exhibit some issues, including oil leaks and occasional turbocharger failures. However, with proper maintenance, these engines can provide many years of service. The R57 Cooper S 1.6 remains a popular choice in the used car market, appealing to buyers who want a stylish and fun-to-drive convertible. Its iconic design and relatively affordable price make it an attractive option for those seeking a premium small car experience. The facelifted R57 models, with their improved engines and updated interiors, are generally considered to be the most desirable versions of this generation Mini Convertible.
