Volkswagen T-Roc Spark Plugs: Intervals, Fitment & Warning Signs
On the T-Roc, a simple coil-swap test genuinely confirms whether a misfire is the plug, the coil, or something else entirely — plus a flashing light warning worth knowing.
Illustration for editorial purposes
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OEM Part Number: confirm via engine code — aftermarket NGK 95929 / Bosch 0 241 145 525
| Petrol engines in this generation | 1.0 TSI 110/115 hp, 1.4 TSI 150 hp, 1.5 TSI 150 hp (incl. 4motion), 2.0 TSI 4motion 190 hp, 2.0 R 4motion 300 hp |
|---|---|
| Spark plugs (aftermarket) | NGK 95929 (iridium, 0.8 mm gap, M12x1.25, 16 mm hex); NGK 94224 (iridium, 0.8 mm gap, M12x1.25); NGK 94712 (iridium, 0.7 mm gap, M14x1.25); NGK 91898 (iridium, M14x1.25); NGK 94833 (platinum, M14x1.25); Bosch 0 241 145 525 (0.75 mm gap, M12x1.25); Bosch 0 241 245 677 (0.65 mm gap, M14x1.25); Bosch 0 241 245 673 (0.7 mm gap, M14x1.25) |
| Genuine (OE) numbers quoted | Kamoka 7090007 quoted against OE 06K 905 601 B |
| Fitment notes | Brisk 2162 states a 100,000 km interval; no Denso and no copper. |
A Genuinely Reliable Way to Diagnose a Misfire Before Replacing Anything — Volkswagen T-Roc Spark Plugs
If you're chasing a misfire (fault codes P0300 for random/multiple cylinders, or P0301-P0304 for a specific cylinder), a genuinely reliable diagnostic technique before replacing anything: swap the ignition coil from the misfiring cylinder with one from a healthy cylinder, then check whether the misfire code follows the coil to its new position. If it does, the coil is confirmed faulty. If the misfire stays with the original cylinder, try the same test with the spark plug — swapping it to rule that out too. Only once both are ruled out should you look further afield, at carbon buildup on the intake valves (a well-known characteristic of direct-injection TSI engines, since fuel injected straight into the cylinder doesn't wash over and clean the valves the way port injection does) or a failing fuel injector.
It's worth knowing ignition coils on TSI engines don't have a fixed scheduled replacement interval the way plugs do, but many owners choose to replace them at the same time as the spark plugs (commonly every 40,000-60,000 miles) as cheap insurance, since a failed coil while driving can trigger an unexpected loss of power. If one coil has failed, replacing all of them together is generally the sensible approach rather than waiting for each to fail in turn.
Volkswagen T-Roc Spark Plugs: A Cheap Part That Causes Expensive-Feeling Problems
On the Volkswagen T-Roc, 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.
Volkswagen T-Roc Spark Plugs: Watch: Replacing It
Generic 1.5 TSI, no T-Roc-specific plug video found.
Volkswagen T-Roc Spark Plugs: What They Do
On the Volkswagen T-Roc, 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.
Volkswagen T-Roc 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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Volkswagen T-Roc 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 Volkswagen Spark Plugs
The same part, covered across other Volkswagen models.