The Mini Convertible (R57) Cooper 1.6 Automatic, produced from March 2009 to February 2010, represented a key iteration within the second generation (R57) of Mini’s popular open-top model. Positioned as an entry-level to mid-range offering, this variant combined the iconic Mini styling with a relatively accessible price point and the convenience of an automatic transmission. It was primarily marketed towards buyers seeking a fashionable and fun-to-drive convertible, prioritizing ease of use over outright performance. The R57 generation, built on the 1HX0/A3 platform shared with the first-generation BMW 1 Series, aimed to broaden the Mini’s appeal beyond its original, more enthusiast-focused roots.
Technical Specifications
| Brand | Mini |
| Model | Convertible |
| Generation | Convertible (R57) |
| Type (Engine) | Cooper 1.6 (120 Hp) Automatic |
| Start of production | March, 2009 |
| End of production | February, 2010 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 8.9 l/100 km (26.4 US mpg) |
| Fuel consumption (extra urban) | 5.3 l/100 km (44.4 US mpg) |
| Fuel consumption (combined) | 6.6 l/100 km (35.6 US mpg) |
| CO2 emissions | 154 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 11.1 sec |
| Acceleration 0 – 62 mph | 11.1 sec |
| Acceleration 0 – 60 mph | 10.5 sec |
| Maximum speed | 191 km/h (118.68 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 10 kg/Hp |
| Weight-to-torque ratio | 7.5 kg/Nm |
| Power | 120 Hp @ 6000 rpm |
| Torque | 160 Nm @ 4250 rpm (118.01 lb.-ft. @ 4250 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | N16B16A |
| 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 | 11:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 4.2 l (4.44 US qt | 3.7 UK qt) |
| Coolant | 5.5 l (5.81 US qt | 4.84 UK qt) |
| Kerb Weight | 1205 kg (2656.57 lbs.) |
| Max. weight | 1635 kg (3604.56 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 | 40 l (10.57 US gal | 8.8 UK gal) |
| Length | 3699 mm (145.63 in.) |
| Width | 1683 mm (66.26 in.) |
| Height | 1414 mm (55.67 in.) |
| Wheelbase | 2467 mm (97.13 in.) |
| Front track | 1459 mm (57.44 in.) |
| Rear (Back) track | 1467 mm (57.76 in.) |
| Ride height (ground clearance) | 139 mm (5.47 in.) |
| Minimum turning circle | 10.7 m (35.1 ft.) |
| Drive wheel | Front wheel drive |
| Number of gears | 6 gears, automatic transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Semi-independent, coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 175/65 R15 84H |
| Wheel rims size | 5.5J x 15 LM |
Powertrain & Engine Architecture
The Cooper 1.6 Automatic variant was powered by the N16B16A engine, a 1.6-liter naturally aspirated inline-four cylinder gasoline engine. This engine was part of the BMW/PSA Prince engine family, known for its compact design and relatively efficient operation. The N16B16A featured double VANOS (Variable Valve Timing) on both intake and exhaust camshafts, optimizing performance and fuel economy across the rev range. Fuel delivery was handled by a multi-port fuel injection system. The engine produced 120 horsepower at 6000 rpm and 160 Nm (118 lb-ft) of torque at 4250 rpm. The engine was transversely mounted at the front of the vehicle. Paired with the engine was a 6-speed automatic transmission, offering smooth shifts but sacrificing some of the responsiveness found in the manual transmission versions. This automatic transmission was a crucial element in attracting buyers who prioritized convenience over sporty driving dynamics.
Driving Characteristics
The 1.6-liter engine with the automatic transmission delivered a comfortable, but not particularly exhilarating, driving experience. Acceleration from 0-60 mph took around 10.5 seconds, and top speed was 118.68 mph. The automatic transmission, while smooth, tended to hunt for gears under hard acceleration, and lacked the direct feel of the manual gearbox. The gear ratios were tuned for fuel efficiency and everyday usability rather than outright performance. Compared to the more powerful Cooper S models, or even the Cooper with a manual transmission, this variant felt noticeably slower. However, it provided adequate power for urban driving and highway cruising, making it a practical choice for daily commutes.
Equipment & Trim Levels
The Cooper 1.6 Automatic typically came standard with features such as air conditioning, power windows, power mirrors, and a basic audio system. Interior upholstery was usually cloth, with options for leather upgrades. The dashboard featured the signature Mini circular center display, housing the speedometer and other essential information. Optional extras included a sunroof, upgraded audio systems (often from Harman Kardon), navigation, and various cosmetic enhancements. The convertible top was a manually operated soft top, although an optional electrically operated version was available. Trim levels were relatively simple, with the focus being on adding optional packages rather than distinct model grades.
Chassis & Braking
The R57 Convertible utilized a McPherson strut front suspension and a semi-independent coil spring rear suspension. This setup provided a good balance between ride comfort and handling. The front brakes were ventilated discs, while the rear brakes were solid discs. ABS (Anti-lock Braking System) was standard. The chassis was reinforced compared to the standard Mini hatchback to compensate for the lack of a fixed roof, improving structural rigidity. Stabilizer bars were fitted front and rear to reduce body roll during cornering. The relatively light weight of the vehicle (1205 kg / 2656.57 lbs) helped to offset the modest power output.
Market Reception & Comparison
The Mini Convertible Cooper 1.6 Automatic was generally well-received by critics as a stylish and fun-to-drive convertible. However, the automatic transmission was often criticized for its lack of responsiveness compared to the manual version. Fuel economy was respectable, averaging around 35.6 US mpg in combined driving, but not class-leading. Compared to the Cooper S, the 1.6-liter engine felt underpowered, but the lower price point made it a more accessible option for many buyers. The 1.6L engine was also considered more reliable than the turbocharged Cooper S engine, reducing potential maintenance costs.
Legacy
The N16B16A engine, while not known for being exceptionally powerful, proved to be a relatively reliable unit when properly maintained. Common issues included oil leaks and occasional problems with the VANOS system. The 6-speed automatic transmission also generally proved durable, although regular fluid changes were essential. Today, the R57 Cooper 1.6 Automatic remains a popular choice in the used car market, particularly for those seeking a fashionable and affordable convertible. Its relatively simple mechanicals and readily available parts make it a relatively easy car to maintain, and its iconic styling continues to appeal to a wide range of buyers. However, potential buyers should be aware of the potential for oil leaks and VANOS issues, and should ensure that the car has been regularly serviced.
