The 2016 Honda Odyssey has six spark plugs—one for each cylinder in its 3.5-liter V6 engine. This article explains the engine layout and what it means for maintenance.
Engine configuration and spark plug count
The Odyssey’s 3.5-liter V6 is a six-cylinder design, which requires six spark plugs. Each plug operates with its own ignition coil in a coil-on-plug system, providing precise timing for each cylinder and helping sustain smooth operation across the engine.
Maintenance implications
When servicing the engine, technicians check the condition of the spark plugs and replace them as part of routine maintenance. Worn plugs can cause rough idling, reduced power, and lower fuel economy. For this era’s 3.5L V6, replacement intervals for long-life plugs typically run around 105,000 miles, but owners should verify the exact interval in the owner’s manual or with a Honda dealer.
Summary: The 2016 Honda Odyssey has six spark plugs—one per cylinder in its 3.5-liter V6 with a coil-on-plug ignition system. Following the manufacturer’s maintenance schedule ensures optimal performance and efficiency.


