Always in competition with BMW, the Audi A4 and S4 are well engineered, performance orientated machines. With arguably one of the finest interiors on this list (in close competition with the BMW), every model of Audi A4/S4 Cabriolet coddles and rewards the driver with prize winning performance. The base model has a variant for FWD and AWD. A4 turbocharged 200 horsepower 
(making 207 lbs feet of torque) 2.0 liter, 4-cylinder. The mid level choice is a normally aspirated 265 horsepower (which makes 243 lbs feet of torque) 3.2 liter, V6. The burly S4 puts the hammer down with 340 horsepower (making 302 lbs feet of torque) 4.2 liter, V8. The A4 Cabriolet weights begin at 3450 (4-cylinder FWD) and goes all the way to 4266 for the S4 Cabriolet. A 6-speed Tiptronic automatic is available for the Quattro equipped Cabriolet and a Continuously Variable Transmission (CVT) is standard and 6-speed manual is optional for the FWD model.
Recently, Mini re-introduced the Mini Cooper convertible duo. The former model was based on the older Mini architecture and used the older Mini’s running gear. This new one is completely up to date. With a 15 seconds opening time for the convertible top, the Mini Convertible is one of the fastest 4-passenger tops around. Available in fabric, the lightweight convertible tops take little away from the Mini’s light, sporty feel. The base model Mini Cooper has a 1.6 liter 4-cylinder engine (co-developed in partnership with Peugeot) provides 118 horsepower (that makes 114 lbs feet of torque).That might not seem especially powerful, but remember these cars weigh just over a ton and a half. In case you need to move the performance to full-boil there is a turbocharged 172 horsepower (making 177 lbs feet of torque) 1.6 liter 4-cylinder.