Typically every 105,000 miles under normal driving conditions. For a 2017 Nissan Altima, the exact interval depends on your engine and plug type (2.5L or 3.5L, iridium/platinum), and driving conditions can shorten or extend life. Always confirm with your owner’s manual or dealer.
Manufacturer-recommended interval
Nissan’s published maintenance schedule for the 2017 Altima generally calls for spark plug replacement at about 105,000 miles under normal operating conditions. This applies to the common configurations offered that year, including the 2.5L four-cylinder and the 3.5L V6, both of which use long-life plugs designed for extended service. If you’re buying a used Altima, verify the plug type and replacement interval from the service records or the owner’s manual, since aftermarket plugs or previous maintenance histories can vary.
Spark plug technology used in the 2017 Altima
Many 2017 Altima engines use iridium- or platinum-tipped plugs that are built for longer life, supporting the 105,000-mile replacement interval under typical conditions. If your vehicle has copper plugs installed by a previous owner or you’re running aggressive driving conditions, the recommended interval may be shorter and should be discussed with a technician.
Engine-specific notes for the 2017 Altima
2.5L four-cylinder (QR25DE)
The 2.5L Altima commonly aligns with the 105,000-mile replacement schedule for its long-life spark plugs. In practice, you may consider checking the plugs earlier if you drive mainly in heavy city traffic with frequent short trips, extreme temperatures, or if you notice signs of wear.
3.5L V6
The 3.5L V6 option also follows the long-life plug philosophy, with a typical 105,000-mile interval under normal conditions. Access for service tends to be more involved on the V6, which can influence labor costs, but the replacement interval itself remains in the same general range for standard iridium/platinum plugs.
How driving conditions affect the interval
Severe driving conditions can shorten plug life. Short trips, frequent cold starts, heavy city driving, towing, extreme hot or cold climates, and frequent idling can all push wear rates higher. If you regularly operate in these conditions, it’s wise to monitor plug condition and plan earlier inspection or replacement as part of your maintenance routine.
Signs that your spark plugs may need replacement
Be alert for performance-related symptoms that suggest worn plugs. If you notice any of the following, have the spark plugs inspected and replaced if needed, even if you’re below or near the 105,000-mile mark:
- Rough idle or engine misfires
- Reduced acceleration and sluggish performance
- Lower fuel economy
- Difficulty starting the engine or extended cranking time
- Engine hesitations or misfire codes on the check engine light
When you approach the stated interval, or if you observe the above symptoms in combination with aging components, it’s a good idea to have a professional inspect the ignition system and related components to avoid further wear or damage.
What to expect during a spark plug replacement
Replacing spark plugs on a 2017 Altima is a routine service that can be performed by a competent DIYer or by a shop. Labor time and cost vary by engine layout (2.5L vs 3.5L) and local rates. The service involves removing ignition coils or wires, extracting the worn plugs, installing new plugs of the correct type and gap, and resealing components. A technician will also inspect ignition coils and change any damaged boots if needed. Always use the plug type and torque spec recommended by Nissan for your engine.
Maintenance tips to help extend spark plug life
To maximize life between changes, follow these best practices:
- Use the manufacturer-recommended spark plug type and heat range
- Ensure proper gap and torque during installation
- Keep the ignition system components (coils, wires) in good condition
- Follow regular maintenance intervals for air filters and fuel injectors, which influence plug wear
- Avoid aggressive driving patterns that cause excessive heat and wear
Regular maintenance, combined with attentive driving, helps ensure plugs reach the expected interval and perform reliably when you need them.
Summary
For a 2017 Nissan Altima, the typical spark plug replacement interval is about 105,000 miles under normal driving conditions, with exact timing depending on engine type (2.5L or 3.5L) and plug material. Severe driving conditions or prior maintenance history can shorten this interval, so consult the owner's manual or a Nissan service professional for the precise recommendation for your vehicle. Being proactive with observed symptoms and regular inspections will help maintain engine performance and fuel efficiency.