The Targa 4 is powered by a 355bhp 3.6-litre six cylinder engine. It accelerates from 0-62mph in 5.3 seconds and reaches a top speed of 174mph.
The more powerful S variant features a 3.8-litre engine producing 355bhp. This model sprints from 0-62mph in 4.9 seconds, and has a top speed of 179mph.
The 911 Targa 4 and 4S go on sale in November priced from £70,320 and £77,370 respectively, including full leather interior, top tinted windscreen and Porsche driving experience programme.