The 2017 Nissan Sentra has four spark plugs—one for each cylinder in its four-cylinder engine. The standard setup is a 1.8-liter four-cylinder, with some trims also offering a 2.0-liter four-cylinder; in either case, there are four spark plugs in total.
Engine options and spark plug configuration
Understanding the engine options helps clarify why the spark plug count remains four. A four-cylinder layout requires one spark plug per cylinder, so the Sentra’s four-cylinder variants maintain four plugs regardless of displacement.
In practice, this means any 2017 Sentra with a four-cylinder engine—whether the common 1.8-liter or the available 2.0-liter variant—uses a total of four spark plugs.
Maintenance considerations
For maintenance, expect to replace all four plugs at once during a spark plug service. Always consult the owner’s manual or a Nissan service advisor for the recommended replacement interval and torque specifications, and consider inspecting ignition coils as part of routine inspection.
Summary
Bottom line: a 2017 Nissan Sentra has four spark plugs, consistent with its four-cylinder engine design. This applies to both the standard 1.8-liter version and the 2.0-liter variant found in some trims.