2025 Porsche 911 Turbo

3.8L Twin-Turbo Flat-6

Twin-Turbo Flat-6

Relentlessly fast yet uncannily docile, this rear-mounted twin-turbo flat-six delivers physics-bending, all-weather acceleration with a hard, flat boxer snarl rather than drama.

Fitted to the 991-generation 911 Turbo (2012 onward), it marked Porsche's move away from the legendary race-derived Mezger engine to a newer direct-injection flat-six architecture optimized for everyday drivability and durability.

• The 991 Turbo was the first 911 Turbo to abandon the hallowed Mezger engine, whose roots traced back to Porsche's Le Mans-winning 962 race car.
• Porsche's later 992-generation Turbo actually shrank the displacement to 3.7 liters while making more power, underscoring how much was left on the table in the 3.8.
• The engine hangs behind the rear axle, a layout Porsche has stubbornly defended and engineered around for decades rather than abandoning.