The car will go on sale in the spring with two V6 petrol engines - 2.4-litre 170bhp and 3.0-litre 220bhp - although the model has already sold out.
The Cabriolet is available in either standard or sports trim and costs £24,620 on-the-road for the 2.4-litre and £28,170 for the 3.0 Sport.
The manual 2.4 accelerates from 0–62mph in 9.7 seconds and has a top speed of 139mph while returning 29.1mpg on the combined cycle and emitting 233g/km of carbon dioxide.
The 3.0-litre reaches 0–62mph in 7.8 seconds. Both automatic and manual variants return 29.1mpg on the combined cycle and emit 233g/km CO2.