Renault Scenic Spark Plugs: Intervals, Fitment & Warning Signs
On the Scenic, a genuinely overlooked cause worth checking if coils and plugs haven't fixed a misfire: poor earth leads.
Illustration for editorial purposes
Opens live listings in a new tab.
OEM Part Number: confirm via engine code — aftermarket NGK 90912 / Bosch 0 241 140 537
| Petrol engines in this generation | 1.2 TCe 115 HP, 1.2 TCe 130 HP, 1.3 TCe 140 HP, 1.3 TCe 163 HP, 1.3 TCe 115 HP (J9N9), 1.3 TCe 159 HP (J9NC) |
|---|---|
| Spark plugs (aftermarket) | NGK 90912 (iridium, 0.7 mm gap, 14 mm hex, M12x1.25); NGK 91121 (iridium, 14 mm hex, M12x1.25); Bosch 0 241 140 537 (0.7 mm gap, 14 mm hex, M12x1.25); Bosch 0 242 135 517 (0.7 mm gap); Bosch 0 242 140 565 (0.7 mm gap); Bosch 0 242 135 585 (0.65 mm gap); Denso IXEH22FTT (iridium, platinum earth, M12x1.25); Champion OE269 (iridium, 0.7 mm gap, 14 mm hex) |
| Genuine (OE) numbers quoted | Renault 224019185R; Renault 224015145R; Kamoka 7100016 cross-references 22 40 191 33R |
| Fitment notes | Every petrol Scenic IV engine is a turbocharged TCe unit using a 14 mm hex, M12x1.25 plug at about 0.7 mm gap, iridium preferred and platinum acceptable. No copper plugs are listed. No change interval is shown. |
A Genuinely Overlooked Cause Worth Checking: Earth Leads — Renault Scenic 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 Scenic Spark Plugs: A Cheap Part That Causes Expensive-Feeling Problems
Worn spark plugs on the Renault Scenic 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 Scenic Spark Plugs: Watch: Replacing It
Spanish; 1.3 TCe is a Scenic 4 petrol engine but the video does not name the Scenic
Renault Scenic Spark Plugs: What They Do
The Renault Scenic'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 Scenic 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 |
Opens live listings in a new tab.
Renault Scenic 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.