2018 Porsche 911 Turbo S vs. GT3

iSeeCars' unbiased and data-driven comparison of the 2018 Porsche 911 Turbo S and 2018 Porsche 911 GT3 contrasts the two cars across a broad spectrum of vehicle specifications to determine which car is better. In addition to comparing pricing and specs, iSeeCars uses all the ratings, rankings, and insights from its comprehensive analyses of each vehicle model, including calculations of reliability, safety, depreciation, value retention, and the vehicle's projected lifetime recalls (based on analyzing over 25 billion data points). This in-depth evaluation is used to identify which vehicle represents a better overall choice for shoppers who are considering both the 2018 Porsche 911 Turbo S and the 2018 Porsche 911 GT3.

When comparing the 2018 Porsche 911 Turbo S's and the 2018 Porsche 911 GT3's specifications and ratings, the 2018 Porsche 911 Turbo S has the advantage in the areas of typical lower range of pricing for used cars, and fuel efficiency, reliability, overall quality score and base engine power. The 2018 Porsche 911 GT3 has the advantage in the area of resale value. Based on this comparison of the 2018 Porsche 911 Turbo S's and the 2018 Porsche 911 GT3's specifications and ratings, the 2018 Porsche 911 Turbo S is a better car than the 2018 Porsche 911 GT3.

Pricing: A used 2018 Porsche 911 Turbo S ranges from $130,132 to $204,849 while a used 2018 Porsche 911 GT3 is priced between $169,665 to $250,690.

Resale/Retained Value: Looking at the 5-year depreciation rate for both models, the 2018 Porsche 911 Turbo S loses 26.3 percent of its value and the 2018 Porsche 911 GT3 loses 17 percent of its value. This means the 2018 Porsche 911 GT3 retains 9.2 percentage points more of its value and has the advantage of higher resale value versus the 2018 Porsche 911 Turbo S.

Quality Rating: The iSeeCars Overall Quality rating for the Porsche 911 is 9.1 out of 10 while the Porsche 911's quality rating is 9.0 out of 10. Porsche 911 is ranked 1 out of 23 Best Luxury Convertibles based on its reliability, retained value, and safety ratings. Out of 38 Best Luxury Sports Cars, the Porsche 911 is ranked 3 and the Porsche 911 is ranked 3 based on its reliability, retained value, and safety ratings.

Reliability Rating: iSeeCars’ Reliability Rating for the Porsche 911 is 8.7 out of 10. For the Porsche 911 the reliability rating is 8.1 out of 10. This gives the Porsche 911 a slight advantage in reliability compared to the Porsche 911.

Engine Power and Fuel Efficiency Comparison: For engine performance, the 2018 Porsche 911 Turbo S’s base engine makes 580 horsepower, and the 2018 Porsche 911 GT3 base engine makes 500 horsepower. The Turbo S is rated to deliver an average of 21 miles per gallon, with a highway range of 430 miles. The GT3 is rated to deliver an average of 16 miles per gallon, with a highway range of 355 miles. This gives the 2018 Porsche 911 Turbo S the fuel efficiency and maximum range advantage over the 2018 Porsche 911 GT3. Both models use premium unleaded.