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Hyundai i20 — the plug depends on the engine. The catalogue lists 3 different plugs across this range: NGK 91458, NGK 93102, NGK 95077. Check which engine you have before ordering. Search on Amazon
Spark plugs are set by the engine, not the model badge — the full per-engine breakdown, the diesel and electric variants and our sourcing notes are below.
Spark Plug Specifications
No single spark plug covers the Hyundai i20. The table below gives the plug for each engine in the range, because the plug follows the engine, not the model badge. Check which engine you have before ordering — the parts are not interchangeable, and on several cars in this class the gap differs too.
| Engine | Spark plug | Electrode gap | Plugs needed | OE number |
|---|---|---|---|---|
| 1.2 MPi | NGK 91458 | 1.0 mm | 4 | 18879-11080 |
| 1.0 T-GDi, including MHEV | NGK 93102 | 0.8 mm | 3 | 18872-08085 |
| I20 N 1.6 T-GDi | NGK 95077 | 0.8 mm | 4 | 18875-08085 |
Recommended Spark Plugs for Hyundai i20
As an Amazon Associate we earn from qualifying purchases. Always confirm the exact fitment for your model & year before buying.
- Commonly mis-listed: NGK SILZKR7B-11. It fits the previous generation of Hyundai and Kia models — the Tucson TL, Sportage QL, Elantra, i40, Sonata, Optima and Sorento — and has no application on this car.
Checked against: NGK, Denso, Bosch and Champion catalogue data via the TecDoc-derived application database, cross-checked against manufacturer OE numbers where those are published.
A note on quantity: the catalogue quantity field is unreliable — it prints 4 for a number of three-cylinder engines. The quantities in the table above have been corrected to the actual cylinder count.
Engine Family Key
Hyundai and Kia share engines across the range, so the plug follows the engine family rather than the model. This is the family key behind the per-engine table above.
| Engine family and code | NGK plug | Gap | OE number |
|---|---|---|---|
| Kappa 1.0 / 1.25 MPi and 1.4 MPi — G3LA, G3LD, G4LA, G4LC | NGK 97098 (SILKR6C10E) | Not published | 18844-10060 |
| Kappa 1.0 / 1.2 MPi, later build — G3LD (i10 AC3), G4LF | NGK 91458 | 1.0 mm | 18879-11080 |
| Kappa 1.0 T-GDi including 48V — G3LC, G3LE, G3LF | NGK 93102 | 0.8 mm | 18872-08085 |
| Kappa 1.4 T-GDi — G4LD | NGK 97312 (ILKR9Q7G) | 0.7 mm | 18868-08115 |
| Smartstream G1.5 T-GDi — G4LH, G4LK | NGK 93102 | 0.8 mm | 18872-08085 |
| Gamma II 1.6 T-GDi — G4FJ | NGK 94595 | 0.8 mm | 18849-08080 |
| Smartstream G1.6 T-GDi including HEV, PHEV and MHEV — G4FP, G4FT, G4FU, G4FV | NGK 95077 | 0.8 mm | 18875-08085 |
| Smartstream 1.6 GDi hybrid, Atkinson cycle — G4LL | NGK 92995 (SILZKR7L11S) | 1.1 mm | 18871-11075 |
| Theta II 2.0 T-GDi (i30 N) — G4KH | NGK 95448 (SILZKR8H9G) | 0.9 mm | 18857-09085 |
| Gamma 1.6 MPi — G4FG | NGK 1578, or V-Line 91450 (LZKR6B-10E) | Not published | Not published |
| Nu 2.0 MPi — G4NL | NGK 92995 | 1.1 mm | 18871-11075 |
Diesels and Electric Variants
Every UK variant of the Hyundai i20 in this generation is petrol or petrol-hybrid, so every engine in the table takes spark plugs. There is no diesel or battery-electric variant to account for.
Recommended Spark Plugs
How Often to Change Them
We are not publishing a mileage figure for this car, because we could not source one. No manufacturer service interval was found for any of the vehicles in this guide, and we will not print a number we cannot attribute.
The figures that circulate online mostly come from parts-catalogue “recommended intervals”, and those contradict each other on cars that share an engine — the same 1.0 T-GDi appears at 75,000 km on one model page and 30,000 km on another; the same Stellantis 1.2 turbo appears at 10,000 km on one and 30,000 km on another. Those are catalogue defaults, not manufacturer schedules, and quoting them as though they were would be dishonest.
The figure that governs your car is in the service schedule in the handbook, or in the manufacturer’s online service planner. As a practical matter, replace plugs sooner than the schedule if the engine misfires under load, idles roughly, is slow to start, or fuel consumption has crept up without another explanation.
Frequently Asked Questions
What spark plugs does a Hyundai i20 use?
It depends which engine you have. Across the Hyundai i20 range the catalogue lists 3 different plugs: NGK 91458 for the 1.2 MPi; NGK 93102 for the 1.0 T-GDi, including MHEV; NGK 95077 for the i20 N 1.6 T-GDi. Publishing one plug for the whole model would be wrong.
How many spark plugs does a Hyundai i20 need?
It varies by engine: three-cylinder engines take three plugs, four-cylinder engines four, and the six-cylinder variants six. The quantity column in the table gives the figure for each engine. Note that parts catalogues frequently print 4 against three-cylinder engines, which is wrong.
Do diesel Hyundai i20 models use spark plugs?
There is no diesel variant of this car in the range covered here, so the question does not arise. In general, though, diesels use glow plugs rather than spark plugs — glow plugs are heaters for cold starting, not igniters.
How often should spark plugs be changed on a Hyundai i20?
Follow the service schedule in your handbook. We deliberately do not publish a mileage figure here: no manufacturer interval could be sourced for this car, and the figures that circulate come from parts-catalogue defaults that contradict each other across models sharing the same engine. Change plugs sooner than the schedule if the engine misfires under load, idles roughly or is slow to start.
Can I use a different brand of spark plug in a Hyundai i20?
Yes, provided the replacement matches the original on thread size, reach, heat range, seat type and electrode material, and is gapped to the figure in the table. Cross-reference by the OE number rather than by the model name — that is the reference that identifies the part unambiguously. Do not fit a plug of a different heat range because it looks similar or shares part of the type code.
How we check fitment for this guide
We cross-reference fitment figures against manufacturer specifications and OE-supplier catalogue data where available, and matched to the standard codes that actually govern fit — battery type/group sizes, wiper lengths and fitting types, bulb fitment codes, tyre size markings, and oil specifications. We work by make, model, year, engine, and build date, because a single model can take different parts across its life. Where the right part depends on your exact vehicle, we tell you to confirm by registration or VIN. More on our method →