Parts for your 2020 Suzuki Splash-Spark plugs

2020 Suzuki Splash Spark Plugs — What’s Fitted and How to Look After Them

Technical sources including the Suzuki Splash owner’s and service manuals for the K-series petrol engines (K10B/K12B), major plug catalogues from NGK and Denso, and Suzuki/Fiat documentation for the D13A 1.3 DDiS diesel confirm the following: petrol Splash variants use spark plugs, while the 1.3 DDiS diesel does not use spark plugs (it uses glow plugs). That means this spark-plug info is relevant to 2020-registered Splash vehicles with the K10B/K12B petrol engines, it’s not applicable to the diesel.

For petrol-powered 2020 Suzuki Splash models, spark plugs are a small part with a big job. Each plug ignites the air–fuel mix inside the cylinder, keeping the K-series engine smooth, perky, and efficient around town and on open roads. Modern Splash petrol models are typically factory-fitted with long-life iridium plugs, chosen for strong spark performance and long service life.

As part of routine servicing, spark plugs deserve a check even when the car feels fine. Over time, electrodes wear and gaps widen, leading to symptoms like a rough idle, sluggish starts on cold mornings, hesitation under load, higher fuel use, or the dash light flicking on for a misfire. If any of that turns up, fresh plugs can restore performance and economy quickly.

Replacement timing depends on plug type and use. For iridium long-life plugs, a change around 100,000 kilometres (or about six years) is common practice, with inspection at regular service intervals and earlier replacement if the car does short trips, tows, or sees dusty conditions. If an economy copper plug is fitted, expect much shorter intervals. Always match the plug heat range and design to the engine code (K10B/K12B) per a trusted catalogue or the workshop manual.

• Use OE-equivalent iridium plugs from recognised brands.
• Work on a cool engine, remove coil-on-plug units carefully and blow out any debris.
• Start threads by hand, then tighten to the torque in the Suzuki manual, don’t overdo it.
• Avoid anti-seize on modern plated plug threads unless the plug maker specifically allows it.
• Don’t adjust the gap on pre-set iridium/platinum plugs unless the catalogue and maker say it’s permissible.
• Lightly apply dielectric grease to coil boots and refit coils securely.

Owners who instead have the 1.3 DDiS diesel will not have spark plugs at all. That engine relies on compression ignition and uses glow plugs only for cold starts, so spark-plug maintenance doesn’t apply to those vehicles.

Popular questions about 2020 Suzuki Splash spark plugs

How often should spark plugs be changed on a 2020 Suzuki Splash?

On petrol K10B/K12B engines, long-life iridium plugs are generally replaced around 100,000 km or six years, whichever comes first. It’s smart to have them inspected during routine services and bring the change forward if there are misfires, hard starts, or increased fuel use. Diesel DDiS versions don’t have spark plugs.

What are the signs the Splash needs new spark plugs?

Common clues include a lumpy idle, hesitation on acceleration, longer cranking before it fires, reduced fuel economy, or a check engine light for a misfire. If those show up on a petrol Splash, fresh, correctly specified plugs usually tidy things up.

Which spark plugs are best for a 2020 Suzuki Splash?

Use OE-equivalent iridium plugs matched to the exact engine (K10B or K12B) via a reputable application guide or the Suzuki manual. Sticking with NGK or Denso iridium options that match the factory spec is a safe bet for performance and longevity.