How Many Spark Plugs Are in a 2017 Hyundai Tucson?

A 2017 Hyundai Tucson has four spark plugs in its common gasoline 4‑cylinder engines, one per cylinder. However, the exact number and type depend on the specific engine option, so owners should confirm their engine code to be precise.

Understanding the 2017 Hyundai Tucson Engine Options

The 2017 Hyundai Tucson was sold with several 4‑cylinder engines, all of which use one spark plug per cylinder. Since every U.S.-market 2017 Tucson uses a four-cylinder gasoline engine, the plug count is consistently four, but there are some differences in engine design and plug specification that matter for maintenance and replacement.

Main Engine Variants and Spark Plug Count

The 2017 Tucson lineup revolves around a small set of 4‑cylinder gasoline engines. Knowing which one you have helps you choose the right spark plugs and replacement interval.

The list below outlines the primary 2017 Hyundai Tucson engines and how many spark plugs each uses.

• 2.0L GDI 4‑cylinder (Nu engine) – Found in many base SE and some lower-trim models.

  • Cylinders: 4

  • Spark plugs: 4 total (one per cylinder)

• 1.6L Turbo GDI 4‑cylinder (Gamma engine) – Offered in Eco, Sport, and Limited trims with the 7‑speed dual-clutch transmission.

  • Cylinders: 4

  • Spark plugs: 4 total (one per cylinder)

• 2.4L GDI 4‑cylinder (where offered in some markets) – In regions outside the U.S., some 2017 Tucsons use a 2.4L 4‑cyl.

  • Cylinders: 4

  • Spark plugs: 4 total (one per cylinder)

• Diesel engines (non‑U.S. markets) – Some markets received CRDi diesel Tucsons; these use glow plugs, not spark plugs, for cold starting.

  • Spark plugs: 0 (diesels do not use spark plugs)

Across the gasoline range, the answer remains straightforward: every 2017 Hyundai Tucson with a petrol engine uses four spark plugs, with diesels relying on a different ignition system altogether.

How to Confirm Your 2017 Tucson’s Engine Type

While the spark plug count is consistently four for gasoline models, it is still important to verify which engine you have so you can buy the correct plug type, heat range, and gap specification.

Where to Find Your Engine Information

Hyundai provides multiple places where owners can check engine details and confirm what’s under the hood.

The following list highlights the easiest ways to identify your engine on a 2017 Tucson.

1. Owner’s manual – The specifications section lists engine code and spark plug type, often by trim level and country.
2. Under‑hood emission label – A sticker in the engine bay (often near the radiator support or underside of the hood) usually includes engine family or displacement.
3. Registration/insurance documents – These sometimes list engine displacement (e.g., 2.0L, 1.6L).
4. VIN decoding – A dealer or online VIN decoder can identify the exact engine based on your vehicle identification number.
5. Hyundai dealer or trusted mechanic – Providing your VIN to a service desk gives you definitive confirmation of engine and recommended spark plug part numbers.

By confirming your engine variant through one or more of these sources, you can match not only the correct spark plug count but also the precise plug specification required.

Spark Plug Types and Replacement Intervals

Hyundai equips the 2017 Tucson with long‑life spark plugs, typically iridium or platinum, designed for extended service intervals. While the plug count is fixed at four, maintenance timing and type can vary slightly by engine and market.

Typical Factory Specifications

Factory-recommended spark plugs for the 2017 Tucson are generally fine‑wire iridium or platinum plugs from brands like NGK or Denso, tailored to GDI engines and, in the 1.6T, turbocharged operation.

The following points summarize how spark plug specs and intervals usually break down for this model year.

• 2.0L GDI (gasoline) –
  • Type: Iridium or platinum OEM-spec plugs
  • Interval: Commonly around 60,000–75,000 miles (about 96,000–120,000 km), depending on market recommendations
• 1.6L Turbo GDI –
  • Type: High-quality iridium plugs designed for turbocharged engines
  • Interval: Often shorter than non‑turbo (for example, 45,000–60,000 miles / ~72,000–96,000 km in some guidelines), due to higher combustion temperatures
• 2.4L GDI (where fitted) –
  • Type: Iridium/platinum OEM-spec
  • Interval: Typically similar to the 2.0L GDI, around 60,000–75,000 miles, but check local manual

Actual recommended intervals can differ by country and driving conditions, so the safest approach is to consult the service schedule printed in your specific owner’s manual or dealer service guide.

Why Spark Plug Count Matters for Owners

Knowing that your 2017 Tucson uses four spark plugs makes it easier to plan maintenance costs and avoid incorrect parts orders. Since each cylinder depends on a single plug, any failure can have an immediate effect on drivability and efficiency.

Maintenance, Cost, and Performance

Replacing all four spark plugs at the recommended interval is considered basic preventive maintenance. It helps maintain fuel economy, reduces misfires, and supports smooth idle, particularly on direct‑injection and turbocharged engines that can be sensitive to ignition quality.

The following list outlines key reasons why understanding your spark plug configuration is useful.

• Budgeting repairs – Parts and labor are typically quoted “per plug” or per set, so knowing you need four plugs makes estimates more predictable.
• Avoiding misfires – A worn or fouled plug on a 4‑cylinder engine can cause a noticeable loss of power and a check‑engine light.
• Fuel economy – Fresh, correctly gapped plugs help the engine burn fuel more completely, aiding mileage and emissions.
• Turbo engine sensitivity – On the 1.6T, proper plugs are critical because turbocharged engines operate at higher pressures and temperatures.
• DIY maintenance planning – Home mechanics can pre‑order the right quantity and type of plugs and estimate the time needed for the job.

Understanding these maintenance implications turns a simple fact—four spark plugs—into practical information for managing your Tucson’s long‑term reliability and operating costs.

Summary

The 2017 Hyundai Tucson, in its gasoline configurations, uses one spark plug per cylinder, resulting in a total of four spark plugs across its 4‑cylinder engines (2.0L GDI, 1.6L Turbo GDI, and, in some markets, 2.4L GDI). Diesel variants, available in select regions, rely on glow plugs instead and do not use spark plugs at all. For accurate maintenance planning, owners should verify their specific engine via the owner’s manual, VIN, or dealer, then follow the recommended service intervals—typically in the 45,000–75,000‑mile range depending on engine and market—to keep performance, fuel economy, and reliability at their best.