inline-4

Straight four-cylinder layout

An inline-4 is a four-cylinder internal combustion engine with all cylinders arranged in a single row.

This configuration dominates compact and mid-size cars for its balance of power, efficiency, and simplicity: The Civic comes standard with a 2.0-liter inline-4.

Also called an I-4 or straight-4.

configuration

four-cylinder

Engine with four pistons

block · head · valvetrain · DOHC · camshaft · displacement · bore · stroke · longitudinal · transverse

automotive

commuter

One who travels regularly

Civic · Golf · Mazda3 · turbocharged · fuel-efficient · reliable · mass-market · affordable · practical · horsepower

motorcycle

sportbike

High-speed racing motorcycle

screamer · middleweight · MotoGP · powerband · top-end

performance

tuning

Adjusting pitch accuracy

intercooler · remap · headers · downpipe · aftermarket · dyno · stroker · bolt-on · modification

Opposites
cylinder arrangement

inline-4V8

Eight-cylinder engine layout

V-twin · flat-four · flat-six · radial engine · rotary engine

cylinder count

inline-4inline-6

Six-cylinder linear engine

straight-six · straight-eight · V8

Phrases
Family

inline

Familiarity
Top 1,000,000
Profile
Used worldwide · Timeless · Concrete · Rated G