Parts for your 2018 Mitsubishi Asx-Ignition leads

2018 Mitsubishi ASX ignition leads

For the 2018 Mitsubishi ASX sold in Australia and New Zealand, traditional ignition leads are not used. The petrol models run a coil-on-plug (COP) ignition system where an individual ignition coil sits directly on top of each spark plug, and the diesel variants don’t use spark plugs at all. This layout is confirmed in Mitsubishi’s workshop documentation for the ASX/RVR/Outlander Sport platform (Engine Electrical/IGNITION sections) and by parts catalogues such as Mitsubishi ASA and major ignition manufacturers’ catalogues (NGK, Denso), which list individual ignition coils and spark plugs for 2018 ASX models, with no high‑tension lead sets shown.

Why no ignition leads? COP eliminates the need for long high‑tension cables by firing the plug right at the cylinder with a short insulated boot. That improves spark energy, reduces electrical losses, and is more reliable in wet or dusty conditions—ideal for local driving conditions. It also streamlines servicing, since there’s no lead resistance to check or cable routing to worry about.

Owners searching for “ignition leads” for a 2018 ASX are usually chasing one of two things:

• For petrol models: ignition coils or spark plugs. The service schedule generally calls for periodic spark plug replacement (often around the 90,000–100,000 km mark, depending on plug type and market schedule). Coils are replaced only if faulty—watch for misfires, rough idle, or a check engine light (misfire codes).
• For diesel models: there are no spark plugs or ignition leads, the engine uses compression ignition. Glow plugs are a different system entirely and unrelated to petrol ignition leads.

A quick tip when servicing the 2.0‑litre petrol ASX: keep the plug tubes clean and dry before removing coils, inspect the coil boots for cracking or carbon tracking, and use the correct spark plug gap and torque to avoid damaging threads. Sticking with OEM‑equivalent coils and the specified iridium or platinum plugs keeps the ignition system happy and the fuel economy on point.

Popular questions about 2018 Mitsubishi ASX ignition leads

Does a 2018 Mitsubishi ASX have ignition leads?
No. The petrol models use a coil‑on‑plug setup with an individual coil per cylinder, and the diesels don’t use spark plugs at all. That’s why there’s no high‑tension lead set listed in workshop manuals or parts catalogues for this model year.

What should be serviced instead of ignition leads on a 2018 ASX?
For petrol versions, focus on spark plugs at the recommended interval and check the coil boots and seals whenever plugs are out. Replace coils only if symptoms point to a fault (misfire, rough running, or fault codes). Diesel versions don’t have ignition leads or spark plugs, glow plugs are separate and only need attention if starting performance degrades.

Can ignition leads be fitted to a coil‑on‑plug 2018 ASX?
No. The engine and engine loom are designed for direct‑mount coils. There’s no practical or reliable way to add traditional leads, and doing so would compromise performance and reliability.