How many spark plugs are in an Acura RDX?
The Acura RDX currently uses four spark plugs in its 2.0-liter turbocharged four-cylinder engines; six spark plugs are used on the V6-powered generations. The exact number depends on the model year and engine configuration.
To understand which count applies to a specific vehicle, it helps to know how the RDX’s engines have evolved across generations. This article breaks down spark plug counts by generation and engine to guide maintenance and parts lookup.
Generational spark plug counts
First generation (2007–2012): 2.3L turbocharged inline-4
Four spark plugs—one for each cylinder.
Second generation (2013–2020): 3.5L V6
Six spark plugs—one for each cylinder in a typical V6 configuration.
Third generation (2022–present): 2.0L turbocharged inline-4
Four spark plugs—one for each cylinder.
Note: Some regional variants or transitional model years may differ slightly. Always verify the exact engine type for your vehicle by checking the engine code or the owner's manual.
Additional considerations
When replacing spark plugs, ensure you purchase the correct type and count for your engine, and follow the manufacturer’s torque specifications and replacement intervals. Acura/Honda engines typically use iridium or platinum plugs with specific service intervals that vary by engine code and model year.
Summary
In short, the modern Acura RDX uses four spark plugs with its 2.0L four-cylinder engine, while the earlier second-generation RDX with a 3.5L V6 uses six spark plugs. For exact counts, confirm your engine type or consult the vehicle’s VIN and manual.
