Toyota Auris Spark Plugs: Intervals, Fitment & Warning Signs
On the Auris, a genuinely valuable diagnostic technique: swapping a coil to a different cylinder reveals whether it's genuinely faulty.
Illustration for editorial purposes
Opens live listings in a new tab.
OEM Part Number: confirm via engine code — aftermarket NGK 6283 / Bosch 0 242 140 565
| Petrol engines in this generation | 1.2 (NRE185_), 1.33, 1.6 (ZRE181_, ZRE185_), 1.8 petrol and 1.8 Hybrid (ZWE186_); diesel 1.4 to 2.0 D-4D also listed |
|---|---|
| Spark plugs (aftermarket) | NGK stock no. 5989 (iridium, M12x1.25, 14 mm hex); NGK 6283 (iridium, M12x1.25, 14 mm hex); NGK 1654 (iridium, M12x1.25, 14 mm hex); NGK 4912 (iridium, M12x1.25, 14 mm hex); NGK 95029 (iridium, 0.9 mm gap, M12x1.25, 14 mm hex); Bosch 0 242 140 565 (0.7 mm gap, M12x1.25, 14 mm hex); Bosch 0 242 129 529 (1.1 mm gap, M12x1.25, 14 mm hex); Bosch 0 242 236 593 (1.1 mm gap, M14x1.25, 16 mm hex) |
| Genuine (OE) numbers quoted | 90919-01295 (Denso EC22HPR-D7); 9091901253 (Kamoka 7100053); 1611548180 (Kamoka 7100010) |
| Fitment notes | Most Auris E18 petrol engines (1.33, 1.6 Valvematic and 1.8) take long-reach iridium M12x1.25 plugs with a 14 mm hex; the M14x1.25 16 mm hex plugs (Champion CCH9006, Beru UPT14P) are listed for the engines that still use that thread. No change interval is quoted. |
A Genuinely Valuable Diagnostic Technique Worth Knowing — Toyota Auris Spark Plugs
If you're getting a persistent misfire fault code pointing to a specific cylinder and want to confirm whether the coil itself is genuinely at fault, this is worth trying: physically swap the coil from the suspect cylinder with a coil from a different cylinder position, then clear the codes and drive again. If the fault code now follows the coil to its new position, the coil itself is genuinely faulty. If the fault code stays with the original cylinder position, the coil isn't the problem.
It's also worth knowing about a genuinely real, somewhat distinctive pattern: an intermittent misfire that seems to worsen specifically in wet weather, and settles down after sitting in a dry garage overnight, often points toward moisture affecting a connector rather than a genuine fault with the coil or plug itself.
Toyota Auris Spark Plugs: A Cheap Part That Causes Expensive-Feeling Problems
On the Toyota Auris, there's rarely a clear signal when spark plugs wear out — just a rougher idle, marginally less pep off the line — vague enough to get pinned on other engine issues. Since the part costs so little, it's also one of the easiest things to keep putting off.
Toyota Auris Spark Plugs: Watch: Replacing It
Auris E180 (2015) Hybrid
Toyota Auris Spark Plugs: What They Do
On the Toyota Auris, combustion efficiency, fuel economy and smooth running all trace back to spark plug condition, since these are what ignite the compressed fuel-air mixture in each cylinder. Petrol engines depend on them entirely — diesels skip spark plugs altogether, igniting fuel through compression instead.
Toyota Auris 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.
Toyota Auris 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 Toyota Spark Plugs
The same part, covered across other Toyota models.