Renault Twingo Spark Plugs: Intervals, Fitment & Warning Signs
On the Twingo, a genuinely overlooked cause worth checking if coils and plugs haven't fixed a misfire: poor earth leads.
Illustration for editorial purposes
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OEM Part Number: confirm via engine code — aftermarket NGK 91121 / Bosch 0 242 140 565
| Petrol engines in this generation | 0.9 TCe 92 HP, 0.9 TCe 109 HP, 0.9 TCe 90 HP (BCM9, BCM2), 1.0 SCe 71 HP, 73 HP, 69 HP (BCMB), 65 HP (BCMJ); LPG 0.9 TCe 90 HP (BCMD); electric Z.E. (BCA1) 82 HP has no spark plugs |
|---|---|
| Spark plugs (aftermarket) | NGK 91121 (iridium, 14 mm hex, M12x1.25); NGK 5942 (nickel, 14 mm hex, M12x1.25); Bosch 0 242 140 565 (0.7 mm gap, 14 mm hex); Bosch 0 242 129 510 (0.9 mm gap, 14 mm hex); Denso IXEH22FTT and IXEH20TT (iridium, platinum earth, M12x1.25); Champion OE261 (iridium, 0.7 mm gap); Champion OE130/T10 and OE271 (copper, 0.9 mm gap, 14 mm hex); Beru Z379 (iridium, platinum earth, 0.7 mm gap) |
| Genuine (OE) numbers quoted | Kamoka 7100016 cross-references 22 40 191 33R; Kamoka 7100015 cross-references 22401-00Q0K; Kamoka 7090530 cross-references 224014378R |
| Fitment notes | The 0.9 TCe turbo takes iridium plugs at about 0.7 mm gap, while the naturally aspirated 1.0 SCe can use copper or nickel plugs at 0.9 mm gap; all are M12x1.25 with a 14 mm hex. No change interval is shown. |
A Genuinely Overlooked Cause Worth Checking: Earth Leads — Renault Twingo Spark Plugs
If you've already replaced coils, plugs, and leads without success, this is genuinely worth knowing: an experienced mechanic's account describes having to replace earth leads on numerous Renaults over the years, causing a genuinely wide range of seemingly unrelated symptoms — lights dimming, the engine not starting first time, running badly, or randomly cutting out, in addition to misfiring. A genuinely simple, practical test worth trying: temporarily attaching a jump lead directly from the engine block to the battery's negative terminal can rule earth issues in or out.
It's also worth knowing that oil seeping past the rocker cover onto the spark plug wells or coil connections, then combining with rainwater, is a genuinely common and specific cause of intermittent misfiring that worsens in wet weather — worth checking and cleaning this area thoroughly, and addressing any underlying rocker cover gasket leak.
Renault Twingo Spark Plugs: A Cheap Part That Causes Expensive-Feeling Problems
Worn spark plugs on the Renault Twingo 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.
Renault Twingo Spark Plugs: Watch: Replacing It
Twingo III; German title but covers the exact model
Renault Twingo Spark Plugs: What They Do
The Renault Twingo'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.
Renault Twingo Spark Plugs: Generations, Engines & Spark Plug Count
| Diesel variants (dCi) | Not applicable — diesel engines use compression ignition and have no spark plugs at all |
|---|---|
| 0.9/1.0 TCe/SCe (standard petrol trims) | Genuinely only 3 spark plugs — this small turbocharged engine (co-developed with Nissan) is shared across Renault, Dacia and even some Smart models, not a four-cylinder |
| 1.3 TCe (higher trims, RS Line and similar) | Genuinely 4 spark plugs — this larger engine (co-developed with Mercedes-Benz) is a completely different unit from the smaller 3-cylinder TCe, despite both sharing the "TCe" badge; confirm your exact engine before ordering |
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Renault Twingo 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 Renault Spark Plugs
The same part, covered across other Renault models.