How often do you change spark plugs on a Honda Ridgeline?
In brief, most Honda Ridgeline models with the 3.5L V6 call for spark plug replacement around 105,000 miles under normal driving. In severe conditions or if you notice performance issues, the interval may be shorter. This article explains the official schedule, signs of wear, and practical tips for replacement.
This guide covers the maintenance interval across Ridgeline generations, what factors can shorten the interval, and how to approach replacement, whether you DIY or hire a technician.
Recommended interval for Ridgeline spark plugs
Honda’s owner manuals and maintenance schedules generally set the spark plug replacement at 105,000 miles for the Ridgeline’s 3.5L V6, a guideline that has applied across the 2006–2014 and 2017–present generations. The exact figure can vary slightly by model year or driving conditions, so always verify in your manual or maintenance minder readouts.
- 2006–2014 Ridgeline: Replace at approximately 105,000 miles
- 2017–present Ridgeline: Replace at approximately 105,000 miles
- Notes: If your vehicle is operated in severe conditions (towing heavy loads, frequent short trips, extreme temperatures, or dusty environments) or if the maintenance minder flags it, replacements may occur sooner.
Bottom line: For most Ridgeline owners, planning a spark plug change around the 105,000-mile mark is standard practice, with adjustments for use case or warnings from the vehicle’s maintenance system.
When to consider replacing spark plugs earlier
Even with a standard 105,000-mile interval, several signs can indicate you should inspect or replace plugs sooner rather than later. Direct-injection engines, in particular, can experience carbon buildup that affects performance. If you notice the following, schedule maintenance soon.
- Rough idling or engine misfires, especially under load
- Loss of power or hesitation during acceleration
- Decreased fuel economy or higher emissions
- Difficulty starting the engine or misfiring codes (for example, P0300)
- Engine knocking or pinging under load
- Check Engine light illuminating
If you observe any of these symptoms, have the plugs inspected and replaced if necessary, and consider a full tune-up to ensure there are no related issues with ignition coils or fuel delivery.
Notes and considerations for Ridgeline owners
Direct injection and valve carbon buildup
Some Ridgeline engines rely on direct injection and can experience carbon buildup on the intake valves, which can affect performance and plug life. While this does not automatically shorten the official interval, it can complicate replacement and may necessitate more frequent inspections in high-carbon environments. Discuss with your mechanic whether additional cleaning or maintenance steps are warranted during plug changes.
Summary
The Honda Ridgeline typically requires spark plug replacement at about 105,000 miles for normal driving, a target that applies across generations. Severe-use conditions or warning lights can justify earlier service. Stay alert for signs of wear, and consult the owner’s manual or a trusted technician to confirm the exact interval for your vehicle and driving habits. Regular maintenance and using OEM or equivalent iridium plugs help maximize performance and longevity.
