Like the coupes, convertibles arrive in two variations. Base Mini Coopers come with a 1.6-liter cast-iron inline-4 engine that yields 115 hp. and 110 lb.-ft. of torque. A 5-speed manual transmission backs this powerplant as standard equipment. However, an optional continuously variable automatic transmission (this varies the gearing over a wide range to find the ideal ratio) is also available. Better yet, this CVT includes a Steptronic mode, which creates six gears that can be shifted clutchlessly via levers. Electronics protect the engine from being over-revved in this mode, and also tell the transmission to downshift if the RPMs are too low.

It's no surprise that the drop-top versions handle just the same as their hard-top brethren, due to underbody reinforcements and a rear crossbar with integrated roll-over headrests. Known for their sporty, pinball-like ride and strong brakes, the S version out-performs the normally-aspirated version, with power that makes you feel like you've been catapulted from a sling-shot, when you go out to pass, or push into toward the three-digit zone. Particularly of note is the improved shifting of the 6-speed manual, now with shorter throw between gears, and road-hugging handling. A rear windscreen helps reduce the whip of the wind, but we found talking, listening to the CD and keeping our hats safely situated on our head worked best with the side windows raised.

Cooper S convertibles gain more horsepower thanks to supercharging, and were the model of choice for our drive. The same 1.6-liter 4-cylinder now gets a blower, in addition to reinforced valves, piston cooling jets, and an engine oil cooler. Output increases to 168 hp. and 162 lb.-ft. of torque. No CVT is offered in this version - the only gearbox available is a 6-speed Getrag manual. A functional hood scoop that pushes more air to the supercharger is exclusive to S models, and center mounted dual exhaust pipes finished in chrome expel the waste.

All MINIs come fitted with fully independent suspension, variable assisted power steering, and four-wheel disc brakes that include ABS, Electronic Brake Distribution, and Corner Brake Control. The electro-hydraulic steering operates independently from the engine so, when little or no assist is needed, no energy is wasted. Only 2.5 turns are required lock to lock, which we discovered when making quick U-turns to peruse antique shops, in charming small towns along our route.