The 930 was marketed with a full leather interior and just about every accessory Porsche could build into it, including a boost gauge. A/C was not always fitted to European-specification cars so is worth seeking out; surprisingly most 930s have only a four-speed gearbox developed largely from racing. Anticipating that the five-speed 915 would rapidly be overwhelmed by the Turbo’s torque, a specific 930 gearbox was fitted and only 1989MY Turbos have a five-speed derived from the G50. The additional ratio does improve the driving experience, particularly in traffic.
Some cars had sunroofs, and unusual colours such as Siena metallic add value. Genuine Sonderwünsch upgrades and in particular the X33 engine kit are rare and such cars are usually found at the top end of 930 pricing.