Used 2018 Porsche 911 Convertible Trims Comparison

Carrera models are rear-wheel-drive coupes and are equipped with a 3.0-liter twin-turbo flat-six engine (370 hp, 331 lb-ft). A seven-speed manual gearbox is standard; the PDK dual-clutch automatic is optional. Don't be fooled by its "base" billing — the Carrera is one hell of a satisfying car that is often overlooked.

Carrera 4 models (and others with the numeral 4 in their names) add all-wheel drive and 1.7-inch-wider rear fenders.

All S models (aside from the Turbo S) have a twin-turbo 3.0-liter flat-six engine with more power (420 hp, 368 lb-ft), larger brakes, a limited-slip differential and 20-inch wheels. Optional features on S models that are unavailable on the base versions include a sport suspension, active stabilizer bars and rear-wheel steering system.

Cabriolet models are equipped an electrically operated folding soft top, while Targa variants have an electrically stowable hard roof panel.

GTS variants are essentially S models with more standard equipment, a power increase (450 hp, 405 lb-ft), the wider rear fenders of 4 models on all GTS variants, and unique interior and exterior trim. These models are deceptively desirable.

Turbo models are mega-powerful cars with an immense range of talents. They have a 3.8-liter twin-turbo flat-six engine (540 hp, 486 lb-ft) and rear fenders that are 2.8 inches wider than the base 911's, and are equipped exclusively with a PDK gearbox and all-wheel drive. Turbo S models have more power (580 hp, 516 lb-ft), center-lock wheels, active stabilizer bars, carbon-ceramic brakes, 18-way adaptive sport seats with backrests in leather, a two-tone leather interior and adaptive LED headlights as standard equipment.

GT3 models are the most focused of all 911s and are favored heavily by the trackday contingent of owners. They are exclusively rear-wheel-drive coupes that have a nonturbocharged 4.0-liter flat-six engine (500 hp, 339 lb-ft) and a choice of seven-speed PDK or a unique six-speed manual gearbox. A fixed rear wing and unique front end and underbody treatments enhance its aerodynamic performance. Rear-wheel steering, active engine mounts, a mechanical limited-slip (PDK-equipped GT3s have an active differential), unique seats, navigation and a track analysis app are standard.