Parts for your 2025 Mitsubishi Eclipse cross-Spark plugs

2025 Mitsubishi Eclipse Cross spark plugs

Spark plugs are absolutely relevant to the 2025 Mitsubishi Eclipse Cross. Mitsubishi’s technical specs list a 1.5‑litre MIVEC turbocharged direct‑injection petrol for the standard model, and the Eclipse Cross PHEV pairs dual motors with a 2.4‑litre Atkinson‑cycle petrol engine. Both are spark‑ignition engines and therefore use spark plugs. The Eclipse Cross owner’s manual schedules spark plug inspection/replacement as routine maintenance, and major plug makers’ AU/NZ catalogues list iridium plugs for these engines. Sources: Mitsubishi Motors Australia/NZ Eclipse Cross specifications and owner’s manual, NGK/DENSO AU/NZ application data.

In day‑to‑day terms, the spark plugs are the tiny workhorses that light the petrol‑air mix in the cylinders. On the 1.5T, they deal with turbo boost and direct injection, so they need to fire cleanly under pressure. On the PHEV, the engine starts and stops frequently, so the plugs must deliver reliable ignition every time it cuts in. That’s why Mitsubishi and plug manufacturers specify long‑life iridium plugs — they handle heat better and keep their sharp edges for longer, helping performance, economy and smooth starts.

For servicing, the general rule is to inspect the plugs at regular logbook intervals and replace them around the long‑life window (often near the 90,000–120,000 km mark, depending on market guidance and conditions). Short‑trip driving, lots of cold starts, or hard towing can bring that forward. Always follow the service schedule in the Eclipse Cross logbook for your exact variant.

• Tell‑tale signs it’s time: rough idle, hesitation under boost, poorer fuel economy, harder starting, or a check engine light for misfire.
• Best practice: replace the full set together, use the specified iridium type and heat range, and fit new coil boots if they’re tired or oil‑soaked.
• Fitment tips: confirm gap to spec (iridium plugs are usually pre‑gapped, but verify), torque correctly, and skip anti‑seize unless the plug maker or service manual specifically calls for it.

Using quality plugs (genuine or reputable equivalents) and sticking to the correct spec keeps the Eclipse Cross running sweet as, protects the catalytic converter from misfire damage, and helps maintain that crisp throttle response Aussies and Kiwis expect under the bonnet.

FAQs

Do all 2025 Eclipse Cross models have spark plugs?
Yes. The 1.5‑litre turbo petrol and the PHEV’s 2.4‑litre petrol engine are both spark‑ignition designs, so each uses spark plugs. This is reflected in Mitsubishi’s specs and the owner’s manual maintenance schedule.

How often should the spark plugs be replaced?
The long‑life iridium plugs typically last up to around 90,000–120,000 km under normal conditions. Always follow the service schedule in the logbook for your exact engine and driving conditions, frequent short trips, heavy loads, or dusty environments may shorten intervals.

What symptoms point to worn spark plugs?
Look for rough idle, misfire under acceleration, sluggish performance, increased fuel use, hard starting, or a check engine light. On the PHEV, you might notice the petrol engine feels less smooth when it cuts in. If in doubt, have them checked during your next service.