The Porsche 959 Sport’s top speed was 339 km/h. This figure belongs specifically to the lightweight, higher-output 959 Sport, also designated the 959 S, rather than the regular 959 Komfort.
Porsche fitted the Sport with larger turbochargers and raised output to 515 PS. Weight-saving measures included deleting the air conditioning, central locking, electric window lifts, rear seats and automatic ride-levelling system. These changes made the Sport more focused on outright performance than everyday comfort.
The 339 km/h figure was recorded by Auto, Motor und Sport at the Nardò high-speed circuit in 1988. That is why some references list lower figures: standard 959 tests commonly reported about 317–318 km/h, while the Sport’s special specification achieved substantially more.
Only 29 examples of the 959 Sport were built, making it much rarer than the Komfort version. The car’s twin-turbocharged, 2.85-litre flat-six and sophisticated four-wheel-drive system helped make the 959 one of the defining high-performance cars of the 1980s.