What is the displacement of the Ford Model T's four-cylinder engine?

The displacement of the Ford Model T’s four-cylinder engine was 2.9 liters.

Ford’s engine is commonly listed as 177 cubic inches, which converts to approximately 2.9 liters. It is a front-mounted inline-four producing about 20 horsepower, enough to give the Model T a top speed near 42 mph.

The engine’s design emphasized simplicity and durability rather than high performance. It could run on gasoline, kerosene, or ethanol, and early examples used water pumps before Ford adopted thermosiphon cooling for most production engines. Its low-voltage magneto ignition was also distinctive.

The 2.9-liter figure can look surprisingly large beside the Model T’s modest power output, but the engine reflected early automotive priorities: reliable low-speed torque, easy maintenance, and inexpensive mass production. Ford built more than 15 million Model Ts between 1908 and 1927.