Hyundai Tucson Spark Plugs: Intervals, Fitment & Warning Signs
On the Tucson, a documented case on a related model saw ceramic plug cracking and coil failures recur four separate times on the same car.
Illustration for editorial purposes
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OEM Part Number: confirm via engine code — aftermarket NGK 94595 / Bosch 0 242 135 548
| Petrol engines in this generation | 1.6 GDi 130/132 HP (and AWD); 1.6 T-GDi 175/177/178/204 HP (and AWD); 2.0 155/156 HP (and AWD); 2.0 CVVT 150 HP (and AWD); 2.0 GDi 165/166 HP (and AWD); 2.4 GDi 181/184 HP (and AWD). No engine codes are given. |
|---|---|
| Spark plugs (aftermarket) | NGK 94595 (iridium, 0.8 mm, M12x1.25); NGK 93815 (iridium, M12x1.25); NGK 9723 (iridium, M12x1.25); Bosch 0 242 135 548 (1.0 mm, M12x1.25); Bosch 0 242 129 524 (1.0 mm, M12x1.25); Beru Z544 (iridium centre, platinum earth, 1.0 mm, M12x1.25); Denso IXUH22FTT (iridium centre, platinum earth, M12x1.25); Champion CCH9023 (iridium centre, 1.0 mm, M12x1.25) |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine plugs against your VIN / engine code |
| Fitment notes | The listed plugs are almost all 16 mm hex M12x1.25 iridium types; the Champion OE250 is M14x1.25 and should not be assumed to fit; plugs are listed for the whole range rather than per engine, so match the gap to the engine (turbo T-GDi engines normally need a tighter gap than the naturally aspirated ones); no change interval is given. |
A Genuinely Distinctive, Real Case Worth Knowing About — Hyundai Tucson Spark Plugs
This is genuinely worth knowing if you're facing a recurring plug or coil fault that seems to keep coming back: one documented case on a related model saw ceramic spark plugs cracking and causing misfires, alongside ignition coil failures, recur four separate times on the same car, with each instance replaced under warranty only for the fault to return.
It's also worth knowing a genuinely useful distinction: unlike spark plugs, which are a genuine, expected consumable, ignition coils are not considered a standard wear-and-tear part — worth pushing back if a dealer tries to dismiss a coil failure as simply expected wear.
Hyundai Tucson Spark Plugs: A Cheap Part That Causes Expensive-Feeling Problems
Worn spark plugs on the Hyundai Tucson rarely announce themselves clearly — a slightly rougher idle, a bit less punch off the line — symptoms easy to blame on almost anything else in the engine bay. The part itself costs very little, which makes it an easy one to overlook for far longer than it should be.
Hyundai Tucson Spark Plugs: Watch: Replacing It
3rd-gen Tucson 2.0; 1.6 turbo alt 8HX84DgnqGc.
Hyundai Tucson Spark Plugs: What They Do
The Hyundai Tucson's spark plugs ignite the compressed fuel-air mixture inside each cylinder, and their condition directly affects combustion efficiency, fuel economy and smooth running. Petrol engines rely entirely on them; diesel engines don't use spark plugs at all, relying on compression instead.
Hyundai Tucson Spark Plugs: Generations & Spark Plug Count
| Diesel variants | Not applicable — diesel engines use compression ignition and have no spark plugs at all |
|---|---|
| Petrol variants (all trims) | 4 spark plugs — one per cylinder |
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Hyundai Tucson Spark Plugs: Warning Signs, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Spark Plugs Guide for symptoms of worn plugs, why matching your exact plug specification matters, and trusted brands to buy from.
More Hyundai Spark Plugs
The same part, covered across other Hyundai models.