Porsche takes the covers off 911 Targa 4 GTS and Cayenne Turbo S

Porsche’s 911 Targa 4 GTS and Cayenne Turbo S are celebrating their world premieres at the 2015 North American International Auto Show in Detroit.

For the first time, the 911 Targa 4 GTS combines the successful GTS moniker with the classic targa concept. With a more powerful 430bhp engine and standard Sport Chrono package, the model produces even more dynamic performance. Additional GTS-specific features for this model, include matt black 20-inch wheels with central wheel locks, sport design front end, black air intake screen. GTS logos are also prominent throughout the car, with signage on the doors, rollover protection bar and on the rear of the car. Inside, black Alcantara is applied to the steering wheel, seats and trim accents made of black brushed aluminium accentuate the sportiness of the car.

Showcasing a new engine charging concept with turbochargers integrated in the exhaust manifolds, the new Turbo S (pictured above) is the top model of the latest Cayenne generation. An increase of 20bhp from the previous model means that the new Cayenne Turbo produces a total of 570bhp. The car's maximum torque, which has also increased by 50 Nm (36.8 ft lb) to 800 Nm (590 ft lb), enables superlative performance, combined with the new turbochargers, ensures even better responsiveness of the bi-turbo engine.

A chassis that is tuned for maximum driving dynamics and packs a wide range of control systems also makes the Cayenne Turbo S a genuine top performer. It can turn a lap of the North Loop of the Nürburgring in 7:59.74 minutes, setting a new record for SUVs.

The Cayenne Turbo S accelerates from zero to 100kph in 4.1 seconds – which is 0.4 seconds faster than the previous model (0-100kph in 3.8 seconds) – and goes on to a top speed of 284kph.