Parts for your 2018 Mitsubishi Eclipse cross-Ignition coils

2018 Mitsubishi Eclipse Cross Ignition Coils

Ignition coils are absolutely relevant to the 2018 Mitsubishi Eclipse Cross. Technical sources including the Mitsubishi Motors workshop manual for the GK-series Eclipse Cross (Engine Electrical – Ignition System), the Mitsubishi electronic parts catalogue (EPC), and major aftermarket catalogues from NGK and DENSO all specify a coil-on-plug ignition system for the 1.5‑litre turbo petrol engine fitted to this model. That means four individual ignition coils, one per cylinder. Note: diesel variants (offered in some markets later) use glow plugs instead, but the 2018 petrol Eclipse Cross in AU/NZ uses ignition coils.

On the Eclipse Cross, the coil-on-plug setup transforms the 12V battery supply into the high voltage needed to fire each spark plug precisely when the ECU commands it. This design delivers cleaner combustion, better fuel economy, and fewer leads and connectors under the bonnet. When the coils are healthy, owners will notice smooth idle, crisp throttle response, and consistent performance across the rev range.

There’s no fixed replacement interval for coils in the factory maintenance schedule, but they do live a hard life with heat and vibration. Common warning signs include:

• Check Engine Light with misfire codes (P0300–P0304)
• Rough idle, hesitation under load, poor fuel economy
• Hard starts or a sulphury/unburnt fuel smell from the exhaust

Good servicing habits help coils last. At spark plug change time (often around 90,000–100,000 kilometres depending on plug type and market), inspect each coil boot for cracks or carbon tracking, and look for oil in the plug tubes from a cam cover seal leak. Replacing worn plugs on schedule reduces coil workload. Keep water out of the plug wells when washing the engine bay.

If a misfire appears, a quick swap test (moving a suspect coil to another cylinder and seeing if the fault follows) is handy. Many owners replace just the failed unit, though high‑kilometre vehicles may benefit from replacing the full set. Use quality genuine or reputable aftermarket coils, fit the correct spec spark plugs, apply a small amount of dielectric grease to the boots, and tighten components to the workshop manual torque values. After replacement, clear any stored fault codes and road test to confirm the fix.

Left unfixed, a bad coil can overfuel the catalyst and shorten its life, so it’s worth sorting promptly for reliability and emissions.

• How many ignition coils does a 2018 Eclipse Cross have? — Four, one per cylinder on the 1.5L turbo petrol (coil-on-plug).
• When should the coils be replaced? — There’s no set interval, replace when faulty or at evidence of deterioration during plug services.
• Is it safe to drive with a failing coil? — It may run, but it’s not recommended, fix ASAP to avoid catalyst damage and poor performance.

Popular questions

How many ignition coils are in a 2018 Mitsubishi Eclipse Cross?
The 2018 petrol Eclipse Cross runs four coil-on-plug ignition coils, one per cylinder. Diesel variants (where offered) do not use ignition coils, they use glow plugs instead.

When should the ignition coils be replaced on this model?
There’s no routine replacement interval in the factory schedule. Most owners replace coils only when a fault appears (such as misfire codes or rough running) or if inspection during a spark plug service shows cracking, carbon tracking, or oil contamination.

Can the vehicle be driven with a bad ignition coil?
It may still run, but driving with a failing coil isn’t a great idea. Misfires can overheat and damage the catalytic converter, increase fuel consumption, and reduce power. It’s best to diagnose and repair as soon as possible.